From 3cae1d138c53a3fd042de3d2c9d9a07cf0650e0f Mon Sep 17 00:00:00 2001 From: "Daniel M. Pelt" Date: Tue, 24 Feb 2015 12:35:45 +0100 Subject: Added Python interface --- samples/matlab/s014_FBP.m | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 samples/matlab/s014_FBP.m (limited to 'samples/matlab/s014_FBP.m') diff --git a/samples/matlab/s014_FBP.m b/samples/matlab/s014_FBP.m new file mode 100644 index 0000000..b73149c --- /dev/null +++ b/samples/matlab/s014_FBP.m @@ -0,0 +1,47 @@ +% ----------------------------------------------------------------------- +% 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); -- cgit v1.2.3