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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_vector_recon |
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:platform: Unix |
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:synopsis: A base for Astra toolbox reconstruction algorithms using vector geometry |
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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 BaseAstraVectorRecon(BaseRecon): |
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""" |
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A Plugin to perform Astra toolbox reconstruction using vector geometry |
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:u*param n_iterations: Number of Iterations - only valid for iterative \ |
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algorithms. Default: 1. |
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""" |
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def __init__(self, name='BaseAstraVectorRecon'): |
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super(BaseAstraVectorRecon, self).__init__(name) |
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self.res = False |
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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 = \ |
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self._get_multiple if '3D' in self.alg else self._get_single |
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super(BaseAstraVectorRecon, 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 self.parameters['res_norm'] 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 AstraReconGpu 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 self.parameters['res_norm']: |
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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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""" |
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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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""" |
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out_dataset[1].add_pattern( |
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"METADATA", core_dims=(1,), slice_dims=(0,)) |
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out_pData[1].plugin_data_setup('METADATA', 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_vector_recon |
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else: |
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self.setup_2D() |
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self.process_frames = self.astra_2D_vector_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 setup_3D(self): |
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pData = self.get_plugin_in_datasets()[0] |
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self.sino_dim_detX = \ |
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pData.get_data_dimension_by_axis_label('x', contains=True) |
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self.sino_dim_detY = \ |
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pData.get_data_dimension_by_axis_label('y', contains=True) |
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self.det_rot = \ |
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pData.get_data_dimension_by_axis_label('angle', 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.sino_dim_detX] |
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self.slice_dir = pData.get_slice_dimension() |
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#self.slice_func = self.slice_sino(self.nDims) |
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""" |
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l = self.sino_shape[self.sino_dim_detX] |
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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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self.mask_id = False |
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mask = np.array((x**2 + y**2 < (l/2.0)**2), dtype=np.float) |
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self.mask = np.transpose( |
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np.tile(mask, (self.get_max_frames(), 1, 1)), (1, 0, 2)) |
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self.manual_mask = True if not self.parameters['sino_pad'] else False |
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""" |
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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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if self.parameters['outer_pad'] is True: |
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outer_mask = 1.0 |
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else: |
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outer_mask = 0.0 |
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else: |
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ratio_mask = ratio |
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if self.parameters['outer_pad'] is True: |
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outer_mask = 1.0 |
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else: |
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outer_mask = 0.0 |
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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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self.manual_mask[self.manual_mask == 0] = outer_mask |
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else: |
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self.manual_mask = False |
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View Code Duplication |
def set_config(self, rec_id, sino_id, proj_geom, vol_geom): |
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cfg = astra.astra_dict(self.alg) |
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cfg['ReconstructionDataId'] = rec_id |
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cfg['ProjectionDataId'] = sino_id |
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if 'FBP' in self.alg: |
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fbp_filter = self.parameters['FBP_filter'] if 'FBP_filter' in \ |
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self.parameters.keys() else 'none' |
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cfg['FilterType'] = fbp_filter |
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if 'projector' in self.parameters.keys(): |
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proj_id = astra.create_projector( |
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self.parameters['projector'], proj_geom, vol_geom) |
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cfg['ProjectorId'] = proj_id |
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cfg = self.set_options(cfg) |
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return cfg |
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def delete(self, alg_id, sino_id, rec_id, proj_id): |
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astra.algorithm.delete(alg_id) |
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astra.data2d.delete(sino_id) |
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astra.data2d.delete(rec_id) |
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if proj_id: |
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astra.projector.delete(proj_id) |
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def _get_single(self): |
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return 'single' |
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def _get_multiple(self): |
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return 'multiple' |
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