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authorEdoardo Pasca <edo.paskino@gmail.com>2017-10-24 14:41:20 +0100
committerEdoardo Pasca <edo.paskino@gmail.com>2017-10-24 14:41:20 +0100
commit67280dbdd5dc30b6500ba663d5f35dd8d5aa1389 (patch)
tree3cfa6e49088dfbde13452127e879fda6122a1687 /demos
parentac4408e8984be8ca23a46b2b75bb243a0a4720aa (diff)
parentc91436873e48d531b9313f9c10fa5f89bcb90ab6 (diff)
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Merge branch 'master' of https://github.com/vais-ral/CCPi-FISTA_Reconstruction into pythonize
Diffstat (limited to 'demos')
-rw-r--r--demos/DemoRD1.m100
-rw-r--r--demos/Demo_Phantom3D_Cone.m5
-rw-r--r--demos/Demo_Phantom3D_Parallel.m79
-rw-r--r--demos/Demo_RealData3D_Parallel.m (renamed from demos/DemoRD2.m)16
4 files changed, 77 insertions, 123 deletions
diff --git a/demos/DemoRD1.m b/demos/DemoRD1.m
deleted file mode 100644
index 5bb5f6b..0000000
--- a/demos/DemoRD1.m
+++ /dev/null
@@ -1,100 +0,0 @@
-% Demonstration of tomographic reconstruction from neutron tomography
-% dataset (basalt sample) using Student t data fidelity
-clear all
-close all
-
-% adding paths
-addpath('../data/');
-addpath('../main_func/'); addpath('../main_func/regularizers_CPU/');
-addpath('../supp/');
-
-load('sino_basalt.mat') % load real neutron data
-
-size_det = size(sino_basalt, 1); % detector size
-angSize = size(sino_basalt,2); % angles dim
-recon_size = 650; % reconstruction size
-
-FBP = iradon(sino_basalt, rad2deg(angles),recon_size);
-figure; imshow(FBP , [0, 0.45]); title ('FBP reconstruction');
-%%
-% set projection/reconstruction geometry here
-Z_slices = 1;
-det_row_count = Z_slices;
-proj_geom = astra_create_proj_geom('parallel3d', 1, 1, det_row_count, size_det, angles);
-vol_geom = astra_create_vol_geom(recon_size,recon_size,Z_slices);
-%%
-fprintf('%s\n', 'Reconstruction using FISTA-LS without regularization...');
-clear params
-params.proj_geom = proj_geom; % pass geometry to the function
-params.vol_geom = vol_geom;
-params.sino = sino_basalt;
-params.iterFISTA = 50;
-params.show = 0;
-params.maxvalplot = 0.6; params.slice = 1;
-
-tic; [X_fista] = FISTA_REC(params); toc;
-figure; imshow(X_fista , [0, 0.45]); title ('FISTA-LS reconstruction');
-%%
-fprintf('%s\n', 'Reconstruction using FISTA-LS-TV...');
-clear params
-params.proj_geom = proj_geom; % pass geometry to the function
-params.vol_geom = vol_geom;
-params.sino = sino_basalt;
-params.iterFISTA = 60;
-params.Regul_LambdaTV = 0.0003; % TV regularization parameter
-params.show = 0;
-params.maxvalplot = 0.6; params.slice = 1;
-
-tic; [X_fista_TV] = FISTA_REC(params); toc;
-figure; imshow(X_fista_TV , [0, 0.45]); title ('FISTA-LS-TV reconstruction');
-%%
-%%
-fprintf('%s\n', 'Reconstruction using FISTA-GH-TV...');
-clear params
-params.proj_geom = proj_geom; % pass geometry to the function
-params.vol_geom = vol_geom;
-params.sino = sino_basalt;
-params.iterFISTA = 60;
-params.Regul_LambdaTV = 0.0003; % TV regularization parameter
-params.Ring_LambdaR_L1 = 0.001; % Soft-Thresh L1 ring variable parameter
-params.Ring_Alpha = 20; % acceleration for ring variable
-params.show = 0;
-params.maxvalplot = 0.6; params.slice = 1;
-
-tic; [X_fista_GH_TV] = FISTA_REC(params); toc;
-figure; imshow(X_fista_GH_TV , [0, 0.45]); title ('FISTA-GH-TV reconstruction');
-%%
-%%
-fprintf('%s\n', 'Reconstruction using FISTA-Student-TV...');
-clear params
-params.proj_geom = proj_geom; % pass geometry to the function
-params.vol_geom = vol_geom;
-params.sino = sino_basalt;
-params.iterFISTA = 50;
-params.L_const = 3500; % Lipshitz constant
-params.Regul_LambdaTV = 0.0003; % TV regularization parameter
-params.fidelity = 'student'; % choosing Student t penalty
-params.show = 1;
-params.initialize = 1; % warm start with SIRT
-params.maxvalplot = 0.6; params.slice = 1;
-
-tic; [X_fistaStudentTV] = FISTA_REC(params); toc;
-figure; imshow(X_fistaStudentTV , [0, 0.45]); title ('FISTA-Student-TV reconstruction');
-%%
-
-fprintf('%s\n', 'Segmentation using OTSU method ...');
-level = graythresh(X_fista);
-Segm_FISTA = im2bw(X_fista,level);
-figure; imshow(Segm_FISTA, []); title ('Segmented FISTA-LS reconstruction');
-
-level = graythresh(X_fista_TV);
-Segm_FISTA_TV = im2bw(X_fista_TV,level);
-figure; imshow(Segm_FISTA_TV, []); title ('Segmented FISTA-LS-TV reconstruction');
-
-level = graythresh(X_fista_GH_TV);
-BW_FISTA_GH_TV = im2bw(X_fista_GH_TV,level);
-figure; imshow(BW_FISTA_GH_TV, []); title ('Segmented FISTA-GH-TV reconstruction');
-
-level = graythresh(X_fistaStudentTV);
-BW_FISTA_Student_TV = im2bw(X_fistaStudentTV,level);
-figure; imshow(BW_FISTA_Student_TV, []); title ('Segmented FISTA-Student-LS reconstruction'); \ No newline at end of file
diff --git a/demos/Demo_Phantom3D_Cone.m b/demos/Demo_Phantom3D_Cone.m
index 3a9178b..a8f2c92 100644
--- a/demos/Demo_Phantom3D_Cone.m
+++ b/demos/Demo_Phantom3D_Cone.m
@@ -8,7 +8,6 @@ addpath('../data/');
addpath('../main_func/'); addpath('../main_func/regularizers_CPU/'); addpath('../main_func/regularizers_GPU/NL_Regul/'); addpath('../main_func/regularizers_GPU/Diffus_HO/');
addpath('../supp/');
-
%%
% build 3D phantom using TomoPhantom
modelNo = 3; % see Phantom3DLibrary.dat file in TomoPhantom
@@ -16,9 +15,11 @@ N = 256; % x-y-z size (cubic image)
angles = 0:1.5:360; % angles vector in degrees
angles_rad = angles*(pi/180); % conversion to radians
det_size = round(sqrt(2)*N); % detector size
-% in order to run functions you have to go to the directory:
+
+%---------TomoPhantom routines---------%
pathTP = '/home/algol/Documents/MATLAB/TomoPhantom/functions/models/Phantom3DLibrary.dat'; % path to TomoPhantom parameters file
TomoPhantom = buildPhantom3D(modelNo,N,pathTP); % generate 3D phantom
+%--------------------------------------%
%%
% using ASTRA-toolbox to set the projection geometry (cone beam)
% eg: astra.create_proj_geom('cone', 1.0 (resol), 1.0 (resol), detectorRowCount, detectorColCount, angles, originToSource, originToDetector)
diff --git a/demos/Demo_Phantom3D_Parallel.m b/demos/Demo_Phantom3D_Parallel.m
index 6a54450..402bdd2 100644
--- a/demos/Demo_Phantom3D_Parallel.m
+++ b/demos/Demo_Phantom3D_Parallel.m
@@ -9,48 +9,74 @@ addpath('../main_func/'); addpath('../main_func/regularizers_CPU/'); addpath('..
addpath('../supp/');
%%
-% build 3D phantom using TomoPhantom and generate projection data
+% Main reconstruction/data generation parameters
modelNo = 2; % see Phantom3DLibrary.dat file in TomoPhantom
N = 256; % x-y-z size (cubic image)
angles = 1:0.5:180; % angles vector in degrees
angles_rad = angles*(pi/180); % conversion to radians
det_size = round(sqrt(2)*N); % detector size
-% in order to run functions you have to go to the directory:
+
+%---------TomoPhantom routines---------%
pathTP = '/home/algol/Documents/MATLAB/TomoPhantom/functions/models/Phantom3DLibrary.dat'; % path to TomoPhantom parameters file
TomoPhantom = buildPhantom3D(modelNo,N,pathTP); % generate 3D phantom
sino_tomophan3D = buildSino3D(modelNo, N, det_size, single(angles),pathTP); % generate ideal data
+%--------------------------------------%
% Adding noise and distortions if required
-sino_artifacts = sino_add_artifacts(sino_tomophan3D,'rings');
+sino_tomophan3D = sino_add_artifacts(sino_tomophan3D,'rings');
+% adding Poisson noise
+dose = 3e9; % photon flux (controls noise level)
+multifactor = max(sino_tomophan3D(:));
+dataExp = dose.*exp(-sino_tomophan3D/multifactor); % noiseless raw data
+dataRaw = astra_add_noise_to_sino(dataExp, dose); % pre-log noisy raw data (weights)
+sino3D_log = log(dose./max(dataRaw,1))*multifactor; %log corrected data -> sinogram
+clear dataExp sino_tomophan3D
%
%%
+%-------------Astra toolbox------------%
+% one can generate data using ASTRA toolbox
+proj_geom = astra_create_proj_geom('parallel', 1, det_size, angles_rad);
+vol_geom = astra_create_vol_geom(N,N);
+sino_ASTRA3D = zeros(det_size, length(angles), N, 'single');
+for i = 1:N
+[sino_id, sinoT] = astra_create_sino_cuda(TomoPhantom(:,:,i), proj_geom, vol_geom);
+sino_ASTRA3D(:,:,i) = sinoT';
+astra_mex_data2d('delete', sino_id);
+end
+%--------------------------------------%
+%%
% using ASTRA-toolbox to set the projection geometry (parallel beam)
proj_geom = astra_create_proj_geom('parallel', 1, det_size, angles_rad);
vol_geom = astra_create_vol_geom(N,N);
%%
fprintf('%s\n', 'Reconstructing with FBP using ASTRA-toolbox ...');
-for i = 1:k
+reconASTRA_3D = zeros(size(TomoPhantom),'single');
+for k = 1:N
vol_id = astra_mex_data2d('create', '-vol', vol_geom, 0);
-proj_id = astra_mex_data2d('create', '-proj3d', proj_geom, sino_artifacts(:,:,k));
+proj_id = astra_mex_data2d('create', '-sino', proj_geom, sino3D_log(:,:,k)');
cfg = astra_struct('FBP_CUDA');
cfg.ProjectionDataId = proj_id;
cfg.ReconstructionDataId = vol_id;
cfg.option.MinConstraint = 0;
alg_id = astra_mex_algorithm('create', cfg);
-astra_mex_algorithm('iterate', alg_id, 15);
-reconASTRA_3D = astra_mex_data2d('get', vol_id);
+astra_mex_algorithm('iterate', alg_id, 1);
+rec = astra_mex_data2d('get', vol_id);
+reconASTRA_3D(:,:,k) = single(rec);
end
+figure; imshow(reconASTRA_3D(:,:,128), [0 1.3]);
%%
-fprintf('%s\n', 'Reconstruction using FISTA-LS without regularization...');
+%%
+fprintf('%s\n', 'Reconstruction using OS-FISTA-PWLS without regularization...');
clear params
% define parameters
params.proj_geom = proj_geom; % pass geometry to the function
params.vol_geom = vol_geom;
-params.sino = single(sino_tomophan3D); % sinogram
-params.iterFISTA = 5; %max number of outer iterations
+params.sino = single(sino3D_log); % sinogram
+params.iterFISTA = 12; %max number of outer iterations
params.X_ideal = TomoPhantom; % ideal phantom
+params.weights = dataRaw./max(dataRaw(:)); % statistical weight for PWLS
+params.subsets = 12; % the number of subsets
params.show = 1; % visualize reconstruction on each iteration
-params.subsets = 12;
-params.slice = round(N/2); params.maxvalplot = 1;
+params.slice = 1; params.maxvalplot = 1.3;
tic; [X_FISTA, output] = FISTA_REC(params); toc;
error_FISTA = output.Resid_error; obj_FISTA = output.objective;
@@ -63,4 +89,33 @@ subplot(1,2,2); imshow(Resid3D(:,:,params.slice),[0 0.1]); title('residual'); c
figure(3);
subplot(1,2,1); plot(error_FISTA); title('RMSE plot');
subplot(1,2,2); plot(obj_FISTA); title('Objective plot');
+%%
+%%
+fprintf('%s\n', 'Reconstruction using OS-FISTA-GH without FGP-TV regularization...');
+clear params
+% define parameters
+params.proj_geom = proj_geom; % pass geometry to the function
+params.vol_geom = vol_geom;
+params.sino = single(sino3D_log); % sinogram
+params.iterFISTA = 15; %max number of outer iterations
+params.X_ideal = TomoPhantom; % ideal phantom
+params.weights = dataRaw./max(dataRaw(:)); % statistical weight for PWLS
+params.subsets = 8; % the number of subsets
+params.Regul_Lambda_FGPTV = 0.003; % TV regularization parameter for FGP-TV
+params.Ring_LambdaR_L1 = 0.02; % Soft-Thresh L1 ring variable parameter
+params.Ring_Alpha = 21; % to boost ring removal procedure
+params.show = 1; % visualize reconstruction on each iteration
+params.slice = 1; params.maxvalplot = 1.3;
+tic; [X_FISTA_GH_TV, output] = FISTA_REC(params); toc;
+
+error_FISTA_GH_TV = output.Resid_error; obj_FISTA_GH_TV = output.objective;
+fprintf('%s %.4f\n', 'Min RMSE for FISTA-PWLS reconstruction is:', min(error_FISTA_GH_TV(:)));
+
+Resid3D = (TomoPhantom - X_FISTA_GH_TV).^2;
+figure(2);
+subplot(1,2,1); imshow(X_FISTA_GH_TV(:,:,params.slice),[0 params.maxvalplot]); title('FISTA-LS reconstruction'); colorbar;
+subplot(1,2,2); imshow(Resid3D(:,:,params.slice),[0 0.1]); title('residual'); colorbar;
+figure(3);
+subplot(1,2,1); plot(error_FISTA_GH_TV); title('RMSE plot');
+subplot(1,2,2); plot(obj_FISTA_GH_TV); title('Objective plot');
%% \ No newline at end of file
diff --git a/demos/DemoRD2.m b/demos/Demo_RealData3D_Parallel.m
index 717a55d..e4c9eb0 100644
--- a/demos/DemoRD2.m
+++ b/demos/Demo_RealData3D_Parallel.m
@@ -11,12 +11,12 @@ addpath('../supp/');
load('DendrRawData.mat') % load raw data of 3D dendritic set
angles_rad = angles*(pi/180); % conversion to radians
-size_det = size(data_raw3D,1); % detectors dim
+det_size = size(data_raw3D,1); % detectors dim
angSize = size(data_raw3D, 2); % angles dim
slices_tot = size(data_raw3D, 3); % no of slices
recon_size = 950; % reconstruction size
-Sino3D = zeros(size_det, angSize, slices_tot, 'single'); % log-corrected sino
+Sino3D = zeros(det_size, angSize, slices_tot, 'single'); % log-corrected sino
% normalizing the data
for jj = 1:slices_tot
sino = data_raw3D(:,:,jj);
@@ -30,10 +30,8 @@ Weights3D = single(data_raw3D); % weights for PW model
clear data_raw3D
%%
% set projection/reconstruction geometry here
-Z_slices = 5;
-det_row_count = Z_slices;
-proj_geom = astra_create_proj_geom('parallel3d', 1, 1, det_row_count, size_det, angles_rad);
-vol_geom = astra_create_vol_geom(recon_size,recon_size,Z_slices);
+proj_geom = astra_create_proj_geom('parallel', 1, det_size, angles_rad);
+vol_geom = astra_create_vol_geom(recon_size,recon_size);
%%
fprintf('%s\n', 'Reconstruction using FBP...');
FBP = iradon(Sino3D(:,:,10), angles,recon_size);
@@ -50,7 +48,7 @@ params.iterFISTA = 12;
params.weights = Weights3D;
params.subsets = 16; % the number of ordered subsets
params.show = 1;
-params.maxvalplot = 2.5; params.slice = 2;
+params.maxvalplot = 2.5; params.slice = 1;
tic; [X_fista, outputFISTA] = FISTA_REC(params); toc;
figure; imshow(X_fista(:,:,params.slice) , [0, 2.5]); title ('FISTA-OS-PWLS reconstruction');
@@ -76,13 +74,13 @@ params.proj_geom = proj_geom; % pass geometry to the function
params.vol_geom = vol_geom;
params.sino = Sino3D;
params.iterFISTA = 12;
-params.Regul_Lambda_FGPTV = 0.005; % TV regularization parameter for FGP-TV
+% params.Regul_Lambda_FGPTV = 0.005; % TV regularization parameter for FGP-TV
params.Ring_LambdaR_L1 = 0.002; % Soft-Thresh L1 ring variable parameter
params.Ring_Alpha = 21; % to boost ring removal procedure
params.weights = Weights3D;
params.subsets = 16; % the number of ordered subsets
params.show = 1;
-params.maxvalplot = 2.5; params.slice = 2;
+params.maxvalplot = 2.5; params.slice = 1;
tic; [X_fista_GH_TV, outputGHTV] = FISTA_REC(params); toc;
figure; imshow(X_fista_GH_TV(:,:,params.slice) , [0, 2.5]); title ('FISTA-OS-GH-TV reconstruction');