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Diffstat (limited to 'samples/s014_FBP.m')
-rw-r--r-- | samples/s014_FBP.m | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/samples/s014_FBP.m b/samples/s014_FBP.m deleted file mode 100644 index b73149c..0000000 --- a/samples/s014_FBP.m +++ /dev/null @@ -1,47 +0,0 @@ -% ----------------------------------------------------------------------- -% This file is part of the ASTRA Toolbox -% -% Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp -% 2014-2015, CWI, Amsterdam -% License: Open Source under GPLv3 -% Contact: astra@uantwerpen.be -% Website: http://sf.net/projects/astra-toolbox -% ----------------------------------------------------------------------- - -vol_geom = astra_create_vol_geom(256, 256); -proj_geom = astra_create_proj_geom('parallel', 1.0, 384, linspace2(0,pi,180)); - -% As before, create a sinogram from a phantom -P = phantom(256); -[sinogram_id, sinogram] = astra_create_sino_gpu(P, proj_geom, vol_geom); -figure(1); imshow(P, []); -figure(2); imshow(sinogram, []); - -% Create a data object for the reconstruction -rec_id = astra_mex_data2d('create', '-vol', vol_geom); - -% create configuration -cfg = astra_struct('FBP_CUDA'); -cfg.ReconstructionDataId = rec_id; -cfg.ProjectionDataId = sinogram_id; -cfg.FilterType = 'Ram-Lak'; - -% possible values for FilterType: -% none, ram-lak, shepp-logan, cosine, hamming, hann, tukey, lanczos, -% triangular, gaussian, barlett-hann, blackman, nuttall, blackman-harris, -% blackman-nuttall, flat-top, kaiser, parzen - - -% Create and run the algorithm object from the configuration structure -alg_id = astra_mex_algorithm('create', cfg); -astra_mex_algorithm('run', alg_id); - -% Get the result -rec = astra_mex_data2d('get', rec_id); -figure(3); imshow(rec, []); - -% Clean up. Note that GPU memory is tied up in the algorithm object, -% and main RAM in the data objects. -astra_mex_algorithm('delete', alg_id); -astra_mex_data2d('delete', rec_id); -astra_mex_data2d('delete', sinogram_id); |