From bb4f7dc7e3a3bf4b4da18e36a2fc69e2195c5a96 Mon Sep 17 00:00:00 2001 From: Edoardo Pasca Date: Tue, 24 Oct 2017 15:47:40 +0100 Subject: moved to test directory --- src/Python/test/test_reconstructor-os.py | 338 +++++++++++++++++++++++++++++++ src/Python/test_reconstructor-os.py | 329 ------------------------------ 2 files changed, 338 insertions(+), 329 deletions(-) create mode 100644 src/Python/test/test_reconstructor-os.py delete mode 100644 src/Python/test_reconstructor-os.py (limited to 'src/Python') diff --git a/src/Python/test/test_reconstructor-os.py b/src/Python/test/test_reconstructor-os.py new file mode 100644 index 0000000..a36feda --- /dev/null +++ b/src/Python/test/test_reconstructor-os.py @@ -0,0 +1,338 @@ +# -*- coding: utf-8 -*- +""" +Created on Wed Aug 23 16:34:49 2017 + +@author: ofn77899 +Based on DemoRD2.m +""" + +import h5py +import numpy + +from ccpi.reconstruction.FISTAReconstructor import FISTAReconstructor +import astra +import matplotlib.pyplot as plt + +def RMSE(signal1, signal2): + '''RMSE Root Mean Squared Error''' + if numpy.shape(signal1) == numpy.shape(signal2): + err = (signal1 - signal2) + err = numpy.sum( err * err )/numpy.size(signal1); # MSE + err = sqrt(err); # RMSE + return err + else: + raise Exception('Input signals must have the same shape') + +filename = r'/home/ofn77899/Reconstruction/CCPi-FISTA_Reconstruction/demos/DendrData.h5' +nx = h5py.File(filename, "r") +#getEntry(nx, '/') +# I have exported the entries as children of / +entries = [entry for entry in nx['/'].keys()] +print (entries) + +Sino3D = numpy.asarray(nx.get('/Sino3D'), dtype="float32") +Weights3D = numpy.asarray(nx.get('/Weights3D'), dtype="float32") +angSize = numpy.asarray(nx.get('/angSize'), dtype=int)[0] +angles_rad = numpy.asarray(nx.get('/angles_rad'), dtype="float32") +recon_size = numpy.asarray(nx.get('/recon_size'), dtype=int)[0] +size_det = numpy.asarray(nx.get('/size_det'), dtype=int)[0] +slices_tot = numpy.asarray(nx.get('/slices_tot'), dtype=int)[0] + +Z_slices = 20 +det_row_count = Z_slices +# next definition is just for consistency of naming +det_col_count = size_det + +detectorSpacingX = 1.0 +detectorSpacingY = detectorSpacingX + + +proj_geom = astra.creators.create_proj_geom('parallel3d', + detectorSpacingX, + detectorSpacingY, + det_row_count, + det_col_count, + angles_rad) + +#vol_geom = astra_create_vol_geom(recon_size,recon_size,Z_slices); +image_size_x = recon_size +image_size_y = recon_size +image_size_z = Z_slices +vol_geom = astra.creators.create_vol_geom( image_size_x, + image_size_y, + image_size_z) + +## First pass the arguments to the FISTAReconstructor and test the +## Lipschitz constant + +fistaRecon = FISTAReconstructor(proj_geom, + vol_geom, + Sino3D , + weights=Weights3D) + +print ("Lipschitz Constant {0}".format(fistaRecon.pars['Lipschitz_constant'])) +fistaRecon.setParameter(number_of_iterations = 12) +fistaRecon.setParameter(Lipschitz_constant = 767893952.0) +fistaRecon.setParameter(ring_alpha = 21) +fistaRecon.setParameter(ring_lambda_R_L1 = 0.002) + + +## Ordered subset +if True: + subsets = 16 + fistaRecon.setParameter(subsets=subsets) + fistaRecon.createOrderedSubsets() + angles = fistaRecon.getParameter('projector_geometry')['ProjectionAngles'] + #binEdges = numpy.linspace(angles.min(), + # angles.max(), + # subsets + 1) + binsDiscr, binEdges = numpy.histogram(angles, bins=subsets) + # get rearranged subset indices + IndicesReorg = numpy.zeros((numpy.shape(angles))) + counterM = 0 + for ii in range(binsDiscr.max()): + counter = 0 + for jj in range(subsets): + curr_index = ii + jj + counter + #print ("{0} {1} {2}".format(binsDiscr[jj] , ii, counterM)) + if binsDiscr[jj] > ii: + if (counterM < numpy.size(IndicesReorg)): + IndicesReorg[counterM] = curr_index + counterM = counterM + 1 + + counter = counter + binsDiscr[jj] - 1 + + +if True: + print ("Lipschitz Constant {0}".format(fistaRecon.pars['Lipschitz_constant'])) + print ("prepare for iteration") + fistaRecon.prepareForIteration() + + + + print("initializing ...") + if False: + # if X doesn't exist + #N = params.vol_geom.GridColCount + N = vol_geom['GridColCount'] + print ("N " + str(N)) + X = numpy.zeros((N,N,SlicesZ), dtype=numpy.float) + else: + #X = fistaRecon.initialize() + X = numpy.load("X.npy") + + print (numpy.shape(X)) + X_t = X.copy() + print ("initialized") + proj_geom , vol_geom, sino , \ + SlicesZ, weights , alpha_ring = fistaRecon.getParameter( + ['projector_geometry' , 'output_geometry', + 'input_sinogram', 'SlicesZ' , 'weights', 'ring_alpha']) + lambdaR_L1 , alpha_ring , weights , L_const= \ + fistaRecon.getParameter(['ring_lambda_R_L1', + 'ring_alpha' , 'weights', + 'Lipschitz_constant']) + + #fistaRecon.setParameter(number_of_iterations = 3) + iterFISTA = fistaRecon.getParameter('number_of_iterations') + # errors vector (if the ground truth is given) + Resid_error = numpy.zeros((iterFISTA)); + # objective function values vector + objective = numpy.zeros((iterFISTA)); + + + t = 1 + + + ## additional for + proj_geomSUB = proj_geom.copy() + fistaRecon.residual2 = numpy.zeros(numpy.shape(fistaRecon.pars['input_sinogram'])) + residual2 = fistaRecon.residual2 + sino_updt_FULL = fistaRecon.residual.copy() + r_x = fistaRecon.r.copy() + + print ("starting iterations") +## % Outer FISTA iterations loop + for i in range(fistaRecon.getParameter('number_of_iterations')): +## % With OS approach it becomes trickier to correlate independent subsets, hence additional work is required +## % one solution is to work with a full sinogram at times +## if ((i >= 3) && (lambdaR_L1 > 0)) +## [sino_id2, sino_updt2] = astra_create_sino3d_cuda(X, proj_geom, vol_geom); +## astra_mex_data3d('delete', sino_id2); +## end + # With OS approach it becomes trickier to correlate independent subsets, + # hence additional work is required one solution is to work with a full + # sinogram at times + + r_old = fistaRecon.r.copy() + t_old = t + SlicesZ, anglesNumb, Detectors = \ + numpy.shape(fistaRecon.getParameter('input_sinogram')) ## https://github.com/vais-ral/CCPi-FISTA_Reconstruction/issues/4 + if (i > 1 and lambdaR_L1 > 0) : + for kkk in range(anglesNumb): + + residual2[:,kkk,:] = (weights[:,kkk,:]).squeeze() * \ + ((sino_updt_FULL[:,kkk,:]).squeeze() - \ + (sino[:,kkk,:]).squeeze() -\ + (alpha_ring * r_x) + ) + + vec = fistaRecon.residual.sum(axis = 1) + #if SlicesZ > 1: + # vec = vec[:,1,:] # 1 or 0? + r_x = fistaRecon.r_x + fistaRecon.r = (r_x - (1./L_const) * vec).copy() + + # subset loop + counterInd = 1 + geometry_type = fistaRecon.getParameter('projector_geometry')['type'] + if geometry_type == 'parallel' or \ + geometry_type == 'fanflat' or \ + geometry_type == 'fanflat_vec' : + + for kkk in range(SlicesZ): + sino_id, sinoT[kkk] = \ + astra.creators.create_sino3d_gpu( + X_t[kkk:kkk+1], proj_geomSUB, vol_geom) + sino_updt_Sub[kkk] = sinoT.T.copy() + + else: + sino_id, sino_updt_Sub = \ + astra.creators.create_sino3d_gpu(X_t, proj_geomSUB, vol_geom) + + astra.matlab.data3d('delete', sino_id) + + for ss in range(fistaRecon.getParameter('subsets')): + print ("Subset {0}".format(ss)) + X_old = X.copy() + t_old = t + + # the number of projections per subset + numProjSub = fistaRecon.getParameter('os_bins')[ss] + CurrSubIndices = fistaRecon.getParameter('os_indices')\ + [counterInd:counterInd+numProjSub-1] + mask = numpy.zeros(numpy.shape(angles), dtype=bool) + cc = 0 + for i in range(len(CurrSubIndices)): + mask[int(CurrSubIndices[i])] = True + proj_geomSUB['ProjectionAngles'] = angles[mask] + + shape = list(numpy.shape(fistaRecon.getParameter('input_sinogram'))) + shape[1] = numProjSub + sino_updt_Sub = numpy.zeros(shape) + + if geometry_type == 'parallel' or \ + geometry_type == 'fanflat' or \ + geometry_type == 'fanflat_vec' : + + for kkk in range(SlicesZ): + sino_id, sinoT = astra.creators.create_sino3d_gpu ( + X_t[kkk:kkk+1] , proj_geomSUB, vol_geom) + sino_updt_Sub[kkk] = sinoT.T.copy() + + else: + # for 3D geometry (watch the GPU memory overflow in ASTRA < 1.8) + sino_id, sino_updt_Sub = \ + astra.creators.create_sino3d_gpu (X_t, proj_geomSUB, vol_geom) + + astra.matlab.data3d('delete', sino_id) + + + + + ## RING REMOVAL + residual = fistaRecon.residual + + + if lambdaR_L1 > 0 : + print ("ring removal") + residualSub = numpy.zeros(shape) + ## for a chosen subset + ## for kkk = 1:numProjSub + ## indC = CurrSubIndeces(kkk); + ## residualSub(:,kkk,:) = squeeze(weights(:,indC,:)).*(squeeze(sino_updt_Sub(:,kkk,:)) - (squeeze(sino(:,indC,:)) - alpha_ring.*r_x)); + ## sino_updt_FULL(:,indC,:) = squeeze(sino_updt_Sub(:,kkk,:)); % filling the full sinogram + ## end + for kkk in range(numProjSub): + print ("ring removal indC ... {0}".format(kkk)) + indC = int(CurrSubIndices[kkk]) + residualSub[:,kkk,:] = weights[:,indC,:].squeeze() * \ + (sino_updt_Sub[:,kkk,:].squeeze() - \ + sino[:,indC,:].squeeze() - alpha_ring * r_x) + # filling the full sinogram + sino_updt_FULL[:,indC,:] = sino_updt_Sub[:,kkk,:].squeeze() + + else: + #PWLS model + residualSub = weights[:,CurrSubIndices,:] * \ + ( sino_updt_Sub - sino[:,CurrSubIndices,:].squeeze() ) + objective[i] = 0.5 * numpy.linalg.norm(residualSub) + + if geometry_type == 'parallel' or \ + geometry_type == 'fanflat' or \ + geometry_type == 'fanflat_vec' : + # if geometry is 2D use slice-by-slice projection-backprojection + # routine + x_temp = numpy.zeros(numpy.shape(X), dtype=numpy.float32) + for kkk in range(SlicesZ): + + x_id, x_temp[kkk] = \ + astra.creators.create_backprojection3d_gpu( + residualSub[kkk:kkk+1], + proj_geomSUB, vol_geom) + + else: + x_id, x_temp = \ + astra.creators.create_backprojection3d_gpu( + residualSub, proj_geomSUB, vol_geom) + + astra.matlab.data3d('delete', x_id) + X = X_t - (1/L_const) * x_temp + + + + ## REGULARIZATION + ## SKIPPING FOR NOW + ## Should be simpli + # regularizer = fistaRecon.getParameter('regularizer') + # for slices: + # out = regularizer(input=X) + print ("skipping regularizer") + + + ## FINAL + print ("final") + lambdaR_L1 = fistaRecon.getParameter('ring_lambda_R_L1') + if lambdaR_L1 > 0: + fistaRecon.r = numpy.max( + numpy.abs(fistaRecon.r) - lambdaR_L1 , 0) * \ + numpy.sign(fistaRecon.r) + # updating r + r_x = fistaRecon.r + ((t_old-1)/t) * (fistaRecon.r - r_old) + + + if fistaRecon.getParameter('region_of_interest') is None: + string = 'Iteration Number {0} | Objective {1} \n' + print (string.format( i, objective[i])) + else: + ROI , X_ideal = fistaRecon.getParameter('region_of_interest', + 'ideal_image') + + Resid_error[i] = RMSE(X*ROI, X_ideal*ROI) + string = 'Iteration Number {0} | RMS Error {1} | Objective {2} \n' + print (string.format(i,Resid_error[i], objective[i])) + + +else: + fistaRecon = FISTAReconstructor(proj_geom, + vol_geom, + Sino3D , + weights=Weights3D) + + print ("Lipschitz Constant {0}".format(fistaRecon.pars['Lipschitz_constant'])) + fistaRecon.setParameter(number_of_iterations = 12) + fistaRecon.setParameter(Lipschitz_constant = 767893952.0) + fistaRecon.setParameter(ring_alpha = 21) + fistaRecon.setParameter(ring_lambda_R_L1 = 0.002) + fistaRecon.prepareForIteration() + X = fistaRecon.iterate(numpy.load("X.npy")) diff --git a/src/Python/test_reconstructor-os.py b/src/Python/test_reconstructor-os.py deleted file mode 100644 index aee70a4..0000000 --- a/src/Python/test_reconstructor-os.py +++ /dev/null @@ -1,329 +0,0 @@ -# -*- coding: utf-8 -*- -""" -Created on Wed Aug 23 16:34:49 2017 - -@author: ofn77899 -Based on DemoRD2.m -""" - -import h5py -import numpy - -from ccpi.fista.FISTAReconstructor import FISTAReconstructor -import astra -import matplotlib.pyplot as plt - -def RMSE(signal1, signal2): - '''RMSE Root Mean Squared Error''' - if numpy.shape(signal1) == numpy.shape(signal2): - err = (signal1 - signal2) - err = numpy.sum( err * err )/numpy.size(signal1); # MSE - err = sqrt(err); # RMSE - return err - else: - raise Exception('Input signals must have the same shape') - -filename = r'/home/ofn77899/Reconstruction/CCPi-FISTA_Reconstruction/demos/DendrData.h5' -nx = h5py.File(filename, "r") -#getEntry(nx, '/') -# I have exported the entries as children of / -entries = [entry for entry in nx['/'].keys()] -print (entries) - -Sino3D = numpy.asarray(nx.get('/Sino3D'), dtype="float32") -Weights3D = numpy.asarray(nx.get('/Weights3D'), dtype="float32") -angSize = numpy.asarray(nx.get('/angSize'), dtype=int)[0] -angles_rad = numpy.asarray(nx.get('/angles_rad'), dtype="float32") -recon_size = numpy.asarray(nx.get('/recon_size'), dtype=int)[0] -size_det = numpy.asarray(nx.get('/size_det'), dtype=int)[0] -slices_tot = numpy.asarray(nx.get('/slices_tot'), dtype=int)[0] - -Z_slices = 20 -det_row_count = Z_slices -# next definition is just for consistency of naming -det_col_count = size_det - -detectorSpacingX = 1.0 -detectorSpacingY = detectorSpacingX - - -proj_geom = astra.creators.create_proj_geom('parallel3d', - detectorSpacingX, - detectorSpacingY, - det_row_count, - det_col_count, - angles_rad) - -#vol_geom = astra_create_vol_geom(recon_size,recon_size,Z_slices); -image_size_x = recon_size -image_size_y = recon_size -image_size_z = Z_slices -vol_geom = astra.creators.create_vol_geom( image_size_x, - image_size_y, - image_size_z) - -## First pass the arguments to the FISTAReconstructor and test the -## Lipschitz constant - -fistaRecon = FISTAReconstructor(proj_geom, - vol_geom, - Sino3D , - weights=Weights3D) - -print ("Lipschitz Constant {0}".format(fistaRecon.pars['Lipschitz_constant'])) -fistaRecon.setParameter(number_of_iterations = 12) -fistaRecon.setParameter(Lipschitz_constant = 767893952.0) -fistaRecon.setParameter(ring_alpha = 21) -fistaRecon.setParameter(ring_lambda_R_L1 = 0.002) - -## Ordered subset -if True: - subsets = 16 - angles = fistaRecon.getParameter('projector_geometry')['ProjectionAngles'] - #binEdges = numpy.linspace(angles.min(), - # angles.max(), - # subsets + 1) - binsDiscr, binEdges = numpy.histogram(angles, bins=subsets) - # get rearranged subset indices - IndicesReorg = numpy.zeros((numpy.shape(angles))) - counterM = 0 - for ii in range(binsDiscr.max()): - counter = 0 - for jj in range(subsets): - curr_index = ii + jj + counter - #print ("{0} {1} {2}".format(binsDiscr[jj] , ii, counterM)) - if binsDiscr[jj] > ii: - if (counterM < numpy.size(IndicesReorg)): - IndicesReorg[counterM] = curr_index - counterM = counterM + 1 - - counter = counter + binsDiscr[jj] - 1 - - -if True: - print ("Lipschitz Constant {0}".format(fistaRecon.pars['Lipschitz_constant'])) - print ("prepare for iteration") - fistaRecon.prepareForIteration() - - - - print("initializing ...") - if False: - # if X doesn't exist - #N = params.vol_geom.GridColCount - N = vol_geom['GridColCount'] - print ("N " + str(N)) - X = numpy.zeros((N,N,SlicesZ), dtype=numpy.float) - else: - #X = fistaRecon.initialize() - X = numpy.load("X.npy") - - print (numpy.shape(X)) - X_t = X.copy() - print ("initialized") - proj_geom , vol_geom, sino , \ - SlicesZ, weights , alpha_ring = fistaRecon.getParameter( - ['projector_geometry' , 'output_geometry', - 'input_sinogram', 'SlicesZ' , 'weights', 'ring_alpha']) - lambdaR_L1 , alpha_ring , weights , L_const= \ - fistaRecon.getParameter(['ring_lambda_R_L1', - 'ring_alpha' , 'weights', - 'Lipschitz_constant']) - - #fistaRecon.setParameter(number_of_iterations = 3) - iterFISTA = fistaRecon.getParameter('number_of_iterations') - # errors vector (if the ground truth is given) - Resid_error = numpy.zeros((iterFISTA)); - # objective function values vector - objective = numpy.zeros((iterFISTA)); - - - t = 1 - - - ## additional for - proj_geomSUB = proj_geom.copy() - fistaRecon.residual2 = numpy.zeros(numpy.shape(fistaRecon.pars['input_sinogram'])) - residual2 = fistaRecon.residual2 - sino_updt_FULL = fistaRecon.residual.copy() - - print ("starting iterations") -## % Outer FISTA iterations loop - for i in range(fistaRecon.getParameter('number_of_iterations')): -## % With OS approach it becomes trickier to correlate independent subsets, hence additional work is required -## % one solution is to work with a full sinogram at times -## if ((i >= 3) && (lambdaR_L1 > 0)) -## [sino_id2, sino_updt2] = astra_create_sino3d_cuda(X, proj_geom, vol_geom); -## astra_mex_data3d('delete', sino_id2); -## end - # With OS approach it becomes trickier to correlate independent subsets, - # hence additional work is required one solution is to work with a full - # sinogram at times - - r_old = fistaRecon.r.copy() - t_old = t - SlicesZ, anglesNumb, Detectors = \ - numpy.shape(fistaRecon.getParameter('input_sinogram')) ## https://github.com/vais-ral/CCPi-FISTA_Reconstruction/issues/4 - if (i > 1 and lambdaR_L1 > 0) : - for kkk in range(anglesNumb): - - residual2[:,kkk,:] = (weights[:,kkk,:]).squeeze() * \ - ((sino_updt_FULL[:,kkk,:]).squeeze() - \ - (sino[:,kkk,:]).squeeze() -\ - (alpha_ring * r_x) - ) - - vec = fistaRecon.residual.sum(axis = 1) - #if SlicesZ > 1: - # vec = vec[:,1,:] # 1 or 0? - r_x = fistaRecon.r_x - fistaRecon.r = (r_x - (1./L_const) * vec).copy() - - # subset loop - counterInd = 1 - geometry_type = fistaRecon.getParameter('projector_geometry')['type'] - if geometry_type == 'parallel' or \ - geometry_type == 'fanflat' or \ - geometry_type == 'fanflat_vec' : - - for kkk in range(SlicesZ): - sino_id, sinoT[kkk] = \ - astra.creators.create_sino3d_gpu( - X_t[kkk:kkk+1], proj_geomSUB, vol_geom) - sino_updt_Sub[kkk] = sinoT.T.copy() - - else: - sino_id, sino_updt_Sub = \ - astra.creators.create_sino3d_gpu(X_t, proj_geomSUB, vol_geom) - - astra.matlab.data3d('delete', sino_id) - - for ss in range(fistaRecon.getParameter('subsets')): - print ("Subset {0}".format(ss)) - X_old = X.copy() - t_old = t - - # the number of projections per subset - numProjSub = fistaRecon.getParameter('os_bins')[ss] - CurrSubIndices = fistaRecon.getParameter('os_indices')\ - [counterInd:counterInd+numProjSub-1] - proj_geomSUB['ProjectionAngles'] = angles[CurrSubIndeces] - - shape = list(numpy.shape(fistaRecon.getParameter('input_sinogram'))) - shape[1] = numProjSub - sino_updt_Sub = numpy.zeros(shape) - - if geometry_type == 'parallel' or \ - geometry_type == 'fanflat' or \ - geometry_type == 'fanflat_vec' : - - for kkk in range(SlicesZ): - sino_id, sinoT = astra.creators.create_sino3d_gpu ( - X_t[kkk:kkk+1] , proj_geomSUB, vol_geom) - sino_updt_Sub[kkk] = sinoT.T.copy() - - else: - # for 3D geometry (watch the GPU memory overflow in ASTRA < 1.8) - sino_id, sino_updt_Sub = \ - astra.creators.create_sino3d_gpu (X_t, proj_geomSUB, vol_geom) - - astra.matlab.data3d('delete', sino_id) - - - - - ## RING REMOVAL - residual = fistaRecon.residual - - - if lambdaR_L1 > 0 : - print ("ring removal") - residualSub = numpy.zeros(shape) - ## for a chosen subset - ## for kkk = 1:numProjSub - ## indC = CurrSubIndeces(kkk); - ## residualSub(:,kkk,:) = squeeze(weights(:,indC,:)).*(squeeze(sino_updt_Sub(:,kkk,:)) - (squeeze(sino(:,indC,:)) - alpha_ring.*r_x)); - ## sino_updt_FULL(:,indC,:) = squeeze(sino_updt_Sub(:,kkk,:)); % filling the full sinogram - ## end - for kkk in range(numProjSub): - indC = CurrSubIndices[kkk] - residualSub[:,kkk,:] = weights[:,indC,:].squeeze() * \ - (sino_updt_Sub[:,kkk,:].squeeze() - \ - sino[:,indC,:].squeeze() - alpha_ring * r_x) - # filling the full sinogram - sino_updt_FULL[:,indC,:] = sino_updt_Sub[:,kkk,:].squeeze() - - else: - #PWLS model - residualSub = weights[:,CurrSubIndices,:] * \ - ( sino_updt_Sub - sino[:,CurrSubIndices,:].squeeze() ) - objective[i] = 0.5 * numpy.linalg.norm(residualSub) - - if geometry_type == 'parallel' or \ - geometry_type == 'fanflat' or \ - geometry_type == 'fanflat_vec' : - # if geometry is 2D use slice-by-slice projection-backprojection - # routine - x_temp = numpy.zeros(numpy.shape(X), dtype=numpy.float32) - for kkk in range(SlicesZ): - - x_id, x_temp[kkk] = \ - astra.creators.create_backprojection3d_gpu( - residualSub[kkk:kkk+1], - proj_geomSUB, vol_geom) - - else: - x_id, x_temp = \ - astra.creators.create_backprojection3d_gpu( - residualSub, proj_geomSUB, vol_geom) - - astra.matlab.data3d('delete', x_id) - X = X_t - (1/L_const) * x_temp - - - - ## REGULARIZATION - ## SKIPPING FOR NOW - ## Should be simpli - # regularizer = fistaRecon.getParameter('regularizer') - # for slices: - # out = regularizer(input=X) - print ("skipping regularizer") - - - ## FINAL - print ("final") - lambdaR_L1 = fistaRecon.getParameter('ring_lambda_R_L1') - if lambdaR_L1 > 0: - fistaRecon.r = numpy.max( - numpy.abs(fistaRecon.r) - lambdaR_L1 , 0) * \ - numpy.sign(fistaRecon.r) - # updating r - r_x = fistaRecon.r + ((t_old-1)/t) * (fistaRecon.r - r_old) - - - if fistaRecon.getParameter('region_of_interest') is None: - string = 'Iteration Number {0} | Objective {1} \n' - print (string.format( i, objective[i])) - else: - ROI , X_ideal = fistaRecon.getParameter('region_of_interest', - 'ideal_image') - - Resid_error[i] = RMSE(X*ROI, X_ideal*ROI) - string = 'Iteration Number {0} | RMS Error {1} | Objective {2} \n' - print (string.format(i,Resid_error[i], objective[i])) - - -else: - fistaRecon = FISTAReconstructor(proj_geom, - vol_geom, - Sino3D , - weights=Weights3D) - - print ("Lipschitz Constant {0}".format(fistaRecon.pars['Lipschitz_constant'])) - fistaRecon.setParameter(number_of_iterations = 12) - fistaRecon.setParameter(Lipschitz_constant = 767893952.0) - fistaRecon.setParameter(ring_alpha = 21) - fistaRecon.setParameter(ring_lambda_R_L1 = 0.002) - fistaRecon.prepareForIteration() - X = fistaRecon.iterate(numpy.load("X.npy")) -- cgit v1.2.3