savu.plugins.reconstructions.astra_recons.astra_recon_gpu.AstraReconGpu.vec_geom_init2D() - Code Metrics - Inspection of "Merge pull request #888 from DiamondLightSource/it..." - DiamondLightSource/Savu - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 9ba79c...17f3e3 )

by Yousef

created 2022-03-01 13:52 UTC

AstraReconGpu.vec_geom_init2D() A

↳ Parent: savu.plugins.reconstructions.astra_recons.astra_recon_gpu

Complexity

Conditions

Size

Total Lines	16
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	14
nop	4
dl	0
loc	16
rs	9.7
c	0
b	0
f	0

# Copyright 2014 Diamond Light Source Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""
.. module:: astra_recon_gpu
   :platform: Unix
   :synopsis: Wrapper around the Astra toolbox for gpu reconstruction using vector geometry
.. moduleauthor:: Mark Basham <[email protected]>

"""
import astra
import numpy as np

from savu.plugins.reconstructions.astra_recons.base_astra_vector_recon \
    import BaseAstraVectorRecon
from savu.plugins.driver.gpu_plugin import GpuPlugin
from savu.plugins.utils import register_plugin
from savu.core.iterate_plugin_group_utils import \
    check_if_end_plugin_in_iterate_group


@register_plugin
class AstraReconGpu(BaseAstraVectorRecon, GpuPlugin):

    def __init__(self):
        super(AstraReconGpu, self).__init__("AstraReconGpu")
        self.GPU_index = None
        self.res = False
        self.start = 0

    def set_options(self, cfg):
        if 'option' not in cfg.keys():
            cfg['option'] = {}
        cfg['option']['GPUindex'] = self.parameters['GPU_index']
        return cfg

    # total number of output datasets
    def nOutput_datasets(self):
        alg = self.parameters['algorithm']
        if self.parameters['res_norm'] is True and 'FBP' not in alg \
            and check_if_end_plugin_in_iterate_group(self.exp):
            err_str = "The res_norm output dataset has not yet been " \
                "implemented for when AstraReconGpu is at the end of an " \
                "iterative loop"
            raise ValueError(err_str)
        elif self.parameters['res_norm'] is True and 'FBP' not in alg:
            self.res = True
            self.parameters['out_datasets'].append('res_norm')
            return 2
        elif check_if_end_plugin_in_iterate_group(self.exp):
            return 2
        else:
            return 1

    def astra_setup(self):
        options_list = ["FBP_CUDA", "SIRT_CUDA", "SART_CUDA", "CGLS_CUDA",
                        "FP_CUDA", "BP_CUDA", "BP3D_CUDA", "FBP3D_CUDA", "SIRT3D_CUDA", "CGLS3D_CUDA"]
        if not options_list.count(self.parameters['algorithm']):
            raise Exception("Unknown Astra GPU algorithm.")

    def astra_2D_vector_recon(self, data):
        sino = data[0]
        cor, angles, vol_shape, init = self.get_frame_params()
        if self.res:
            res = np.zeros(self.len_res)
        # create volume geom
        vol_geom = astra.create_vol_geom(vol_shape)
        # create projection geom
        det_width = sino.shape[self.dim_detX]
        half_det_width = 0.5 * det_width
        cor_astra_scalar = half_det_width - cor
        # set parallel beam vector geometry
        vectors = self.vec_geom_init2D(np.deg2rad(angles), 1.0, cor_astra_scalar - 0.5)
        try:
            # vector geometry (astra > 1.9v)
            proj_geom = astra.create_proj_geom('parallel_vec', det_width, vectors)
        except:
            print('Warning: using scalar geometry since the Astra version <1.9 does not support the vector one for 2D')
            proj_geom = astra.create_proj_geom('parallel', 1.0, det_width, angles)
        sino = np.transpose(sino, (self.dim_rot, self.dim_detX))

        # Create a data object to hold the sinogram data
        sino_id = astra.data2d.create('-sino', proj_geom, sino)

        # create reconstruction id
        if init is not None:
            rec_id = astra.data2d.create('-vol', vol_geom, init)
        else:
            rec_id = astra.data2d.create('-vol', vol_geom)

        #        if self.mask_id:
        #            self.mask_id = astra.data2d.create('-vol', vol_geom, self.mask)
        # setup configuration options
        cfg = self.set_config(rec_id, sino_id, proj_geom, vol_geom)
        # create algorithm id
        alg_id = astra.algorithm.create(cfg)
        # run algorithm
        if self.res:
            for j in range(self.iters):
                # Run a single iteration
                astra.algorithm.run(alg_id, 1)
                res[j] = astra.algorithm.get_res_norm(alg_id)
        else:
            astra.algorithm.run(alg_id, self.iters)
        # get reconstruction matrix

        if self.manual_mask is not False:
            recon = self.manual_mask * astra.data2d.get(rec_id)
        else:
            recon = astra.data2d.get(rec_id)

        # delete geometry
        self.delete(alg_id, sino_id, rec_id, False)
        return [recon, res] if self.res else recon


    def astra_3D_vector_recon(self, data):
        proj_data3d = data[0]  # get 3d block of projection data
        cor, angles, vol_shape, init = self.get_frame_params()
        projection_shifts2d = self.get_frame_shifts()
        half_det_width = 0.5 * proj_data3d.shape[self.sino_dim_detX]
        cor_astra_scalar = half_det_width - np.mean(cor)  # works with scalar CoR only atm

        recon = np.zeros(vol_shape)
        recon = np.expand_dims(recon, axis=self.slice_dir)
        if self.res:
            res = np.zeros((self.vol_shape[self.slice_dir], self.iters))

        # create volume geometry
        vol_geom = \
            astra.create_vol_geom(vol_shape[0], vol_shape[2], vol_shape[1])

        # define astra vector geometry for 3d case
        vectors3d = self.vec_geom_init3D(np.deg2rad(angles + 90.0), 1.0, 1.0, cor_astra_scalar - 0.5,
                                         projection_shifts2d)
        proj_geom = astra.create_proj_geom('parallel3d_vec',
                                           proj_data3d.shape[self.sino_dim_detY],
                                           proj_data3d.shape[self.sino_dim_detX],
                                           vectors3d)

        proj_data3d = np.swapaxes(proj_data3d, 0, 1)
        if self.parameters['algorithm'] == "FBP3D_CUDA":
            # pre-filter projection data
            proj_data3d = self.filtersinc3d(proj_data3d)

        # create projection data id
        proj_id = astra.data3d.create("-sino", proj_geom, proj_data3d)

        # create reconstruction id
        if init is not None:
            rec_id = astra.data3d.create('-vol', vol_geom, init)
        else:
            rec_id = astra.data3d.create('-vol', vol_geom)

        # setup configuration options
        cfg = self.set_config(rec_id, proj_id, proj_geom, vol_geom)

        if self.parameters['algorithm'] == "FBP3D_CUDA":
            cfg['type'] = 'BP3D_CUDA'

        # create algorithm id
        alg_id = astra.algorithm.create(cfg)

        # run algorithm
        if self.res:
            for j in range(self.iters):
                # Run a single iteration
                astra.algorithm.run(alg_id, 1)
                res[j] = astra.algorithm.get_res_norm(alg_id)
        else:
            astra.algorithm.run(alg_id, self.iters)

        # get reconstruction matrix
        # if self.manual_mask:
        #    recon = self.mask*astra.data3d.get(rec_id)
        # else:
        #    recon = astra.data3d.get(rec_id)

        recon = np.transpose(astra.data3d.get(rec_id), (2, 0, 1))

        # delete geometry
        self.delete(alg_id, proj_id, rec_id, False)

        self.start += 1
        if self.res:
            return [recon, res]

        else:
            return recon

    def rotation_matrix2D(self, theta):
        # define 2D rotation matrix
        return np.array([[np.cos(theta), -np.sin(theta)],
                         [np.sin(theta), np.cos(theta)]])

    def rotation_matrix3D(self, theta):
        # define 3D rotation matrix
        return np.array([[np.cos(theta), -np.sin(theta), 0.0],
                         [np.sin(theta), np.cos(theta), 0.0],
                         [0.0, 0.0, 1.0]])

    def vec_geom_init2D(self, angles_rad, DetectorSpacingX, CenterRotOffset):
        # define 2D vector geometry
        s0 = [0.0, -1.0]  # source
        d0 = [CenterRotOffset, 0.0]  # detector
        u0 = [DetectorSpacingX, 0.0]  # detector coordinates

        vectors = np.zeros([angles_rad.size, 6])
        for i in range(0, angles_rad.size):
            theta = angles_rad[i]
            vec_temp = np.dot(self.rotation_matrix2D(theta), s0)
            vectors[i, 0:2] = vec_temp[:]  # ray position
            vec_temp = np.dot(self.rotation_matrix2D(theta), d0)
            vectors[i, 2:4] = vec_temp[:]  # center of detector position
            vec_temp = np.dot(self.rotation_matrix2D(theta), u0)
            vectors[i, 4:6] = vec_temp[:]  # detector pixel (0,0) to (0,1).
        return vectors

    def vec_geom_init3D(self, angles_rad, DetectorSpacingX, DetectorSpacingY, CenterRotOffset, projection_shifts2d):
        # define 3D vector geometry
        s0 = [0.0, -1.0, 0.0]  # source
        u0 = [DetectorSpacingX, 0.0, 0.0]  # detector coordinates
        v0 = [0.0, 0.0, DetectorSpacingY]  # detector coordinates

        vectors = np.zeros([angles_rad.size, 12])
        for i in range(0, angles_rad.size):
            d0 = [CenterRotOffset - projection_shifts2d[i, 0], 0.0,
                  -projection_shifts2d[i, 1] - 0.5]  # detector
            theta = angles_rad[i]
            vec_temp = np.dot(self.rotation_matrix3D(theta), s0)
            vectors[i, 0:3] = vec_temp[:]  # ray position
            vec_temp = np.dot(self.rotation_matrix3D(theta), d0)
            vectors[i, 3:6] = vec_temp[:]  # center of detector position
            vec_temp = np.dot(self.rotation_matrix3D(theta), u0)
            vectors[i, 6:9] = vec_temp[:]  # detector pixel (0,0) to (0,1).
            vec_temp = np.dot(self.rotation_matrix3D(theta), v0)
            vectors[i, 9:12] = vec_temp[:]  # Vector from detector pixel (0,0) to (1,0)
        return vectors

    def filtersinc3d(self, projection3d):
        import scipy.fftpack
        # applies a sinc filter to 3D projection data
        # Data format [DetectorVert, Projections, DetectorHoriz]
        # adopted from Matlabs code by  Waqas Akram
        # "a":	This parameter varies the filter magnitude response.
        # When "a" is very small (a<<1), the response approximates |w|
        # As "a" is increased, the filter response starts to
        # roll off at high frequencies.
        a = 1.1
        [DetectorsLengthV, projectionsNum, DetectorsLengthH] = np.shape(projection3d)
        w = np.linspace(-np.pi, np.pi - (2 * np.pi) / DetectorsLengthH, DetectorsLengthH, dtype='float32')


        rn1 = np.abs(2.0 / a * np.sin(a * w / 2.0))
        rn2 = np.sin(a * w / 2.0)
        rd = (a * w) / 2.0
        rd_c = np.zeros([1, DetectorsLengthH])
        rd_c[0, :] = rd
        r = rn1 * (np.dot(rn2, np.linalg.pinv(rd_c))) ** 2
        multiplier = (1.0 / projectionsNum)

        f = scipy.fftpack.fftshift(r)
        filtered = np.zeros(np.shape(projection3d))

        for j in range(0, DetectorsLengthV):

            for i in range(0, projectionsNum):
                IMG = scipy.fftpack.fft(projection3d[j, i, :])
                filtered[j, i, :] = multiplier * np.real(scipy.fftpack.ifft(IMG * f))
        return np.float32(filtered)


1			# Copyright 2014 Diamond Light Source Ltd.
2			#
3			# Licensed under the Apache License, Version 2.0 (the "License");
4			# you may not use this file except in compliance with the License.
5			# You may obtain a copy of the License at
6			#
7			# http://www.apache.org/licenses/LICENSE-2.0
8			#
9			# Unless required by applicable law or agreed to in writing, software
10			# distributed under the License is distributed on an "AS IS" BASIS,
11			# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12			# See the License for the specific language governing permissions and
13			# limitations under the License.
14
15			"""
16			.. module:: astra_recon_gpu
17			:platform: Unix
18			:synopsis: Wrapper around the Astra toolbox for gpu reconstruction using vector geometry
19			.. moduleauthor:: Mark Basham <[email protected]>
20
21			"""
22			import astra
23			import numpy as np
24
25			from savu.plugins.reconstructions.astra_recons.base_astra_vector_recon \
26			import BaseAstraVectorRecon
27			from savu.plugins.driver.gpu_plugin import GpuPlugin
28			from savu.plugins.utils import register_plugin
29			from savu.core.iterate_plugin_group_utils import \
30			check_if_end_plugin_in_iterate_group
31
32
33			@register_plugin
34			class AstraReconGpu(BaseAstraVectorRecon, GpuPlugin):
35
36			def __init__(self):
37			super(AstraReconGpu, self).__init__("AstraReconGpu")
38			self.GPU_index = None
39			self.res = False
40			self.start = 0
41
42			def set_options(self, cfg):
43			if 'option' not in cfg.keys():
44			cfg['option'] = {}
45			cfg['option']['GPUindex'] = self.parameters['GPU_index']
46			return cfg
47
48			# total number of output datasets
49			def nOutput_datasets(self):
50			alg = self.parameters['algorithm']
51			if self.parameters['res_norm'] is True and 'FBP' not in alg \
52			and check_if_end_plugin_in_iterate_group(self.exp):
53			err_str = "The res_norm output dataset has not yet been " \
54			"implemented for when AstraReconGpu is at the end of an " \
55			"iterative loop"
56			raise ValueError(err_str)
57			elif self.parameters['res_norm'] is True and 'FBP' not in alg:
58			self.res = True
59			self.parameters['out_datasets'].append('res_norm')
60			return 2
61			elif check_if_end_plugin_in_iterate_group(self.exp):
62			return 2
63			else:
64			return 1
65
66			def astra_setup(self):
67			options_list = ["FBP_CUDA", "SIRT_CUDA", "SART_CUDA", "CGLS_CUDA",
68			"FP_CUDA", "BP_CUDA", "BP3D_CUDA", "FBP3D_CUDA", "SIRT3D_CUDA", "CGLS3D_CUDA"]
69			if not options_list.count(self.parameters['algorithm']):
70			raise Exception("Unknown Astra GPU algorithm.")
71
72			def astra_2D_vector_recon(self, data):
73			sino = data[0]
74			cor, angles, vol_shape, init = self.get_frame_params()
75			if self.res:
76			res = np.zeros(self.len_res)
77			# create volume geom
78			vol_geom = astra.create_vol_geom(vol_shape)
79			# create projection geom
80			det_width = sino.shape[self.dim_detX]
81			half_det_width = 0.5 * det_width
82			cor_astra_scalar = half_det_width - cor
83			# set parallel beam vector geometry
84			vectors = self.vec_geom_init2D(np.deg2rad(angles), 1.0, cor_astra_scalar - 0.5)
85			try:
86			# vector geometry (astra > 1.9v)
87			proj_geom = astra.create_proj_geom('parallel_vec', det_width, vectors)
88			except:
89			print('Warning: using scalar geometry since the Astra version <1.9 does not support the vector one for 2D')
90			proj_geom = astra.create_proj_geom('parallel', 1.0, det_width, angles)
91			sino = np.transpose(sino, (self.dim_rot, self.dim_detX))
92
93			# Create a data object to hold the sinogram data
94			sino_id = astra.data2d.create('-sino', proj_geom, sino)
95
96			# create reconstruction id
97			if init is not None:
98			rec_id = astra.data2d.create('-vol', vol_geom, init)
99			else:
100			rec_id = astra.data2d.create('-vol', vol_geom)
101
102			# if self.mask_id:
103			# self.mask_id = astra.data2d.create('-vol', vol_geom, self.mask)
104			# setup configuration options
105			cfg = self.set_config(rec_id, sino_id, proj_geom, vol_geom)
106			# create algorithm id
107			alg_id = astra.algorithm.create(cfg)
108			# run algorithm
109			if self.res:
110			for j in range(self.iters):
111			# Run a single iteration
112			astra.algorithm.run(alg_id, 1)
113			res[j] = astra.algorithm.get_res_norm(alg_id)
114			else:
115			astra.algorithm.run(alg_id, self.iters)
116			# get reconstruction matrix
117
118			if self.manual_mask is not False:
119			recon = self.manual_mask * astra.data2d.get(rec_id)
120			else:
121			recon = astra.data2d.get(rec_id)
122
123			# delete geometry
124			self.delete(alg_id, sino_id, rec_id, False)
125			return [recon, res] if self.res else recon
			0 ignored issues – show introduced 2021-02-25 17:14 UTC by Report Bug Copy Issue Report The variable `res` does not seem to be defined in case `self.res` on line `75` is `False`. Are you sure this can never be the case? Loading history...
126
127			def astra_3D_vector_recon(self, data):
128			proj_data3d = data[0] # get 3d block of projection data
129			cor, angles, vol_shape, init = self.get_frame_params()
130			projection_shifts2d = self.get_frame_shifts()
131			half_det_width = 0.5 * proj_data3d.shape[self.sino_dim_detX]
132			cor_astra_scalar = half_det_width - np.mean(cor) # works with scalar CoR only atm
133
134			recon = np.zeros(vol_shape)
135			recon = np.expand_dims(recon, axis=self.slice_dir)
136			if self.res:
137			res = np.zeros((self.vol_shape[self.slice_dir], self.iters))
138
139			# create volume geometry
140			vol_geom = \
141			astra.create_vol_geom(vol_shape[0], vol_shape[2], vol_shape[1])
142
143			# define astra vector geometry for 3d case
144			vectors3d = self.vec_geom_init3D(np.deg2rad(angles + 90.0), 1.0, 1.0, cor_astra_scalar - 0.5,
145			projection_shifts2d)
146			proj_geom = astra.create_proj_geom('parallel3d_vec',
147			proj_data3d.shape[self.sino_dim_detY],
148			proj_data3d.shape[self.sino_dim_detX],
149			vectors3d)
150
151			proj_data3d = np.swapaxes(proj_data3d, 0, 1)
152			if self.parameters['algorithm'] == "FBP3D_CUDA":
153			# pre-filter projection data
154			proj_data3d = self.filtersinc3d(proj_data3d)
155
156			# create projection data id
157			proj_id = astra.data3d.create("-sino", proj_geom, proj_data3d)
158
159			# create reconstruction id
160			if init is not None:
161			rec_id = astra.data3d.create('-vol', vol_geom, init)
162			else:
163			rec_id = astra.data3d.create('-vol', vol_geom)
164
165			# setup configuration options
166			cfg = self.set_config(rec_id, proj_id, proj_geom, vol_geom)
167
168			if self.parameters['algorithm'] == "FBP3D_CUDA":
169			cfg['type'] = 'BP3D_CUDA'
170
171			# create algorithm id
172			alg_id = astra.algorithm.create(cfg)
173
174			# run algorithm
175			if self.res:
176			for j in range(self.iters):
177			# Run a single iteration
178			astra.algorithm.run(alg_id, 1)
179			res[j] = astra.algorithm.get_res_norm(alg_id)
180			else:
181			astra.algorithm.run(alg_id, self.iters)
182
183			# get reconstruction matrix
184			# if self.manual_mask:
185			# recon = self.mask*astra.data3d.get(rec_id)
186			# else:
187			# recon = astra.data3d.get(rec_id)
188
189			recon = np.transpose(astra.data3d.get(rec_id), (2, 0, 1))
190
191			# delete geometry
192			self.delete(alg_id, proj_id, rec_id, False)
193
194			self.start += 1
195			if self.res:
196			return [recon, res]
			0 ignored issues – show introduced 2021-02-25 17:14 UTC by Report Bug Copy Issue Report The variable `res` does not seem to be defined in case `self.res` on line `136` is `False`. Are you sure this can never be the case? Loading history...
197			else:
198			return recon
199
200			def rotation_matrix2D(self, theta):
201			# define 2D rotation matrix
202			return np.array([[np.cos(theta), -np.sin(theta)],
203			[np.sin(theta), np.cos(theta)]])
204
205			def rotation_matrix3D(self, theta):
206			# define 3D rotation matrix
207			return np.array([[np.cos(theta), -np.sin(theta), 0.0],
208			[np.sin(theta), np.cos(theta), 0.0],
209			[0.0, 0.0, 1.0]])
210
211			def vec_geom_init2D(self, angles_rad, DetectorSpacingX, CenterRotOffset):
212			# define 2D vector geometry
213			s0 = [0.0, -1.0] # source
214			d0 = [CenterRotOffset, 0.0] # detector
215			u0 = [DetectorSpacingX, 0.0] # detector coordinates
216
217			vectors = np.zeros([angles_rad.size, 6])
218			for i in range(0, angles_rad.size):
219			theta = angles_rad[i]
220			vec_temp = np.dot(self.rotation_matrix2D(theta), s0)
221			vectors[i, 0:2] = vec_temp[:] # ray position
222			vec_temp = np.dot(self.rotation_matrix2D(theta), d0)
223			vectors[i, 2:4] = vec_temp[:] # center of detector position
224			vec_temp = np.dot(self.rotation_matrix2D(theta), u0)
225			vectors[i, 4:6] = vec_temp[:] # detector pixel (0,0) to (0,1).
226			return vectors
227
228			def vec_geom_init3D(self, angles_rad, DetectorSpacingX, DetectorSpacingY, CenterRotOffset, projection_shifts2d):
229			# define 3D vector geometry
230			s0 = [0.0, -1.0, 0.0] # source
231			u0 = [DetectorSpacingX, 0.0, 0.0] # detector coordinates
232			v0 = [0.0, 0.0, DetectorSpacingY] # detector coordinates
233
234			vectors = np.zeros([angles_rad.size, 12])
235			for i in range(0, angles_rad.size):
236			d0 = [CenterRotOffset - projection_shifts2d[i, 0], 0.0,
237			-projection_shifts2d[i, 1] - 0.5] # detector
238			theta = angles_rad[i]
239			vec_temp = np.dot(self.rotation_matrix3D(theta), s0)
240			vectors[i, 0:3] = vec_temp[:] # ray position
241			vec_temp = np.dot(self.rotation_matrix3D(theta), d0)
242			vectors[i, 3:6] = vec_temp[:] # center of detector position
243			vec_temp = np.dot(self.rotation_matrix3D(theta), u0)
244			vectors[i, 6:9] = vec_temp[:] # detector pixel (0,0) to (0,1).
245			vec_temp = np.dot(self.rotation_matrix3D(theta), v0)
246			vectors[i, 9:12] = vec_temp[:] # Vector from detector pixel (0,0) to (1,0)
247			return vectors
248
249			def filtersinc3d(self, projection3d):
250			import scipy.fftpack
251			# applies a sinc filter to 3D projection data
252			# Data format [DetectorVert, Projections, DetectorHoriz]
253			# adopted from Matlabs code by Waqas Akram
254			# "a": This parameter varies the filter magnitude response.
255			# When "a" is very small (a<<1), the response approximates \|w\|
256			# As "a" is increased, the filter response starts to
257			# roll off at high frequencies.
258			a = 1.1
259			[DetectorsLengthV, projectionsNum, DetectorsLengthH] = np.shape(projection3d)
260			w = np.linspace(-np.pi, np.pi - (2 * np.pi) / DetectorsLengthH, DetectorsLengthH, dtype='float32')
			0 ignored issues – show Comprehensibility Best Practice introduced 2022-01-21 12:01 UTC by Report Bug Copy Issue Report The variable `DetectorsLengthH` does not seem to be defined. Loading history...
261
262			rn1 = np.abs(2.0 / a * np.sin(a * w / 2.0))
263			rn2 = np.sin(a * w / 2.0)
264			rd = (a * w) / 2.0
265			rd_c = np.zeros([1, DetectorsLengthH])
266			rd_c[0, :] = rd
267			r = rn1 * (np.dot(rn2, np.linalg.pinv(rd_c))) ** 2
268			multiplier = (1.0 / projectionsNum)
			0 ignored issues – show Comprehensibility Best Practice introduced 2022-01-21 12:01 UTC by Report Bug Copy Issue Report The variable `projectionsNum` does not seem to be defined. Loading history...
269			f = scipy.fftpack.fftshift(r)
270			filtered = np.zeros(np.shape(projection3d))
271
272			for j in range(0, DetectorsLengthV):
			0 ignored issues – show Comprehensibility Best Practice introduced 2022-01-21 12:01 UTC by Report Bug Copy Issue Report The variable `DetectorsLengthV` does not seem to be defined. Loading history...
273			for i in range(0, projectionsNum):
274			IMG = scipy.fftpack.fft(projection3d[j, i, :])
275			filtered[j, i, :] = multiplier * np.real(scipy.fftpack.ifft(IMG * f))
276			return np.float32(filtered)
277

DiamondLightSource / Savu

Push — master ( 9ba79c...17f3e3 )

AstraReconGpu.vec_geom_init2D() A

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