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                # Copyright 2014 Diamond Light Source Ltd.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                #  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # Licensed under the Apache License, Version 2.0 (the "License");  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # you may not use this file except in compliance with the License.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # You may obtain a copy of the License at  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                #  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                #     http://www.apache.org/licenses/LICENSE-2.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                #  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # Unless required by applicable law or agreed to in writing, software  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # distributed under the License is distributed on an "AS IS" BASIS,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # See the License for the specific language governing permissions and  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # limitations under the License.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                .. module:: base_astra_recon  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                   :platform: Unix  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                   :synopsis: A base for all Astra toolbox reconstruction algorithms  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                .. moduleauthor:: Mark Basham <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                import astra  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                import numpy as np  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                from savu.plugins.reconstructions.base_recon import BaseRecon  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                from savu.core.iterate_plugin_group_utils import enable_iterative_loop, \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    check_if_end_plugin_in_iterate_group  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class BaseAstraRecon(BaseRecon):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def __init__(self, name='BaseAstraRecon'):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        super(BaseAstraRecon, self).__init__(name)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.res = False  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    # total number of output datasets  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def nOutput_datasets(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if check_if_end_plugin_in_iterate_group(self.exp):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return 2  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return 1  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    # total number of output datasets that are clones  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def nClone_datasets(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if check_if_end_plugin_in_iterate_group(self.exp):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return 1  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return 0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    @enable_iterative_loop  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def setup(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.alg = self.parameters['algorithm']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.get_max_frames = self._get_multiple if '3D' in self.alg else self._get_single  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        super(BaseAstraRecon, self).setup()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        out_dataset = self.get_out_datasets()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        # if res_norm is required then setup another output dataset  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if len(out_dataset) == 3 and self.nClone_datasets() == 1:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            err_str = "The res_norm output dataset has not yet been " \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                "implemented for when AstraReconCpu is at the end of an " \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                "iterative loop"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            raise ValueError(err_str)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        elif len(out_dataset) == 2 and self.nClone_datasets() == 0:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.res = True  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            out_pData = self.get_plugin_out_datasets()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            in_data = self.get_in_datasets()[0]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            dim_detX = \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                in_data.get_data_dimension_by_axis_label('y', contains=True) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            nIts = self.parameters['n_iterations']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            nIts = nIts if isinstance(nIts, list) else [nIts]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.len_res = max(nIts)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            shape = (in_data.get_shape()[dim_detX], max(nIts))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            label = ['vol_y.voxel', 'iteration.number']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            pattern = {'name': 'SINOGRAM', 'slice_dims': (0,), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                       'core_dims': (1,)}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            out_dataset[1].create_dataset(axis_labels=label, shape=shape)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            out_dataset[1].add_pattern(pattern['name'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                       slice_dims=pattern['slice_dims'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                       core_dims=pattern['core_dims'])  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            out_pData[1].plugin_data_setup(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                pattern['name'], self.get_max_frames())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def pre_process(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.alg = self.parameters['algorithm']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.iters = self.parameters['n_iterations']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if '3D' in self.alg:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.setup_3D()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.process_frames = self.astra_3D_recon  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.setup_2D()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.process_frames = self.astra_2D_recon  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    def setup_2D(self):  | 
            
                            
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                        pData = self.get_plugin_in_datasets()[0]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.dim_detX = \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            pData.get_data_dimension_by_axis_label('x', contains=True) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.dim_rot = \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            pData.get_data_dimension_by_axis_label('rot', contains=True) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.sino_shape = pData.get_shape()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.nDims = len(self.sino_shape)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.nCols = self.sino_shape[self.dim_detX]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.set_mask(self.sino_shape)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def set_mask(self, shape):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        l = self.get_plugin_out_datasets()[0].get_shape()[0]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        c = np.linspace(-l / 2.0, l / 2.0, l)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        x, y = np.meshgrid(c, c)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ratio = self.parameters['ratio']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if isinstance(ratio, list) or isinstance(ratio, tuple):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ratio_mask = ratio[0]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            outer_mask = ratio[1]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if isinstance(outer_mask, str):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                outer_mask = np.nan  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ratio_mask = ratio  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            outer_mask = np.nan  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        r = (l - 1) * ratio_mask  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        outer_pad = True if self.parameters['outer_pad'] and self.padding_alg\  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            else False  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if not outer_pad:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.manual_mask = \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                np.array((x**2 + y**2 < (r / 2.0)**2), dtype=np.float)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    129
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                            self.manual_mask[self.manual_mask == 0] = outer_mask  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    130
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                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    131
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                            self.manual_mask = False  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    132
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                    133
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                    def astra_2D_recon(self, data):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    134
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                        sino = data[0]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    135
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                        cor, angles, vol_shape, init = self.get_frame_params()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    136
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                        angles = np.deg2rad(angles)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    137
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                        if self.res:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
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                 | 
                            res = np.zeros(self.len_res)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
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                        # create volume geom  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    140
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                        vol_geom = astra.create_vol_geom(vol_shape)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
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                        # create projection geom  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    142
                 | 
                                    
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                        det_width = sino.shape[self.dim_detX]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
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                 | 
                        proj_geom = astra.create_proj_geom('parallel', 1.0, det_width, angles) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
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                 | 
                        sino = np.transpose(sino, (self.dim_rot, self.dim_detX))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    145
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                    146
                 | 
                                    
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                        # create sinogram id  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
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                        sino_id = astra.data2d.create("-sino", proj_geom, sino) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
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                        # create reconstruction id  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
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                        if init is not None:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
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                            rec_id = astra.data2d.create('-vol', vol_geom, init) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    151
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                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                            rec_id = astra.data2d.create('-vol', vol_geom) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    153
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                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
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                 | 
                #        if self.mask_id:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                #            self.mask_id = astra.data2d.create('-vol', vol_geom, self.mask) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                        # setup configuration options  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                        cfg = self.set_config(rec_id, sino_id, proj_geom, vol_geom)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                        # create algorithm id  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                        alg_id = astra.algorithm.create(cfg)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                        # run algorithm  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                        if self.res:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                            for j in range(self.iters):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                                # Run a single iteration  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                                astra.algorithm.run(alg_id, 1)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                                res[j] = astra.algorithm.get_res_norm(alg_id)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                            astra.algorithm.run(alg_id, self.iters)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                        # get reconstruction matrix  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
                 | 
                                    
                                                     | 
                
                 | 
                        if self.manual_mask is not False:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
                                                     | 
                
                 | 
                            recon = self.manual_mask * astra.data2d.get(rec_id)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                            recon = astra.data2d.get(rec_id)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    174
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    175
                 | 
                                    
                                                     | 
                
                 | 
                        # delete geometry  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    176
                 | 
                                    
                                                     | 
                
                 | 
                        self.delete(alg_id, sino_id, rec_id, False)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    177
                 | 
                                    
                                                     | 
                
                 | 
                        return [recon, res] if self.res else recon  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    178
                 | 
                                    
                                                     | 
                
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                 | 
            
            
                                                                        
                            
            
                                                                    
                                                                                                        
            
            
                | 
                    179
                 | 
                                    
                                                     | 
                
                View Code Duplication | 
                    def set_config(self, rec_id, sino_id, proj_geom, vol_geom):  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                        
                            
            
                                    
            
            
                | 
                    180
                 | 
                                    
                                                     | 
                
                 | 
                        cfg = astra.astra_dict(self.alg)  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    181
                 | 
                                    
                                                     | 
                
                 | 
                        cfg['ReconstructionDataId'] = rec_id  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    182
                 | 
                                    
                                                     | 
                
                 | 
                        cfg['ProjectionDataId'] = sino_id  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    183
                 | 
                                    
                                                     | 
                
                 | 
                        if 'FBP' in self.alg:  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    184
                 | 
                                    
                                                     | 
                
                 | 
                            fbp_filter = self.parameters['FBP_filter'] if 'FBP_filter' in \  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    185
                 | 
                                    
                                                     | 
                
                 | 
                                list(self.parameters.keys()) else 'none'  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    186
                 | 
                                    
                                                     | 
                
                 | 
                            cfg['FilterType'] = fbp_filter  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    187
                 | 
                                    
                                                     | 
                
                 | 
                        if 'projector' in list(self.parameters.keys()):  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    188
                 | 
                                    
                                                     | 
                
                 | 
                            proj_id = astra.create_projector(  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    189
                 | 
                                    
                                                     | 
                
                 | 
                                self.parameters['projector'], proj_geom, vol_geom)  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    190
                 | 
                                    
                                                     | 
                
                 | 
                            cfg['ProjectorId'] = proj_id  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    191
                 | 
                                    
                                                     | 
                
                 | 
                        cfg = self.set_options(cfg)  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    192
                 | 
                                    
                                                     | 
                
                 | 
                        return cfg  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    193
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    194
                 | 
                                    
                                                     | 
                
                 | 
                    def delete(self, alg_id, sino_id, rec_id, proj_id):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    195
                 | 
                                    
                                                     | 
                
                 | 
                        astra.algorithm.delete(alg_id)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    196
                 | 
                                    
                                                     | 
                
                 | 
                        astra.data2d.delete(sino_id)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    197
                 | 
                                    
                                                     | 
                
                 | 
                        astra.data2d.delete(rec_id)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    198
                 | 
                                    
                                                     | 
                
                 | 
                        if proj_id:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    199
                 | 
                                    
                                                     | 
                
                 | 
                            astra.projector.delete(proj_id)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    200
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    201
                 | 
                                    
                                                     | 
                
                 | 
                    def _get_single(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    202
                 | 
                                    
                                                     | 
                
                 | 
                        return 'single'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    203
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    204
                 | 
                                    
                                                     | 
                
                 | 
                    def _get_multiple(self):  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    205
                 | 
                                    
                                                     | 
                
                 | 
                        return 'multiple'  | 
            
            
                                                        
            
                                    
            
            
                | 
                    206
                 | 
                                    
                                                     | 
                
                 | 
                 |