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EPR Imaging Toolbox collection user manual |
radon_c2d_cube Analytic Radon transformation of a cube phantom Syntax: [P] = radon_c2d_cube(phantom, radon_pars) [l,P] = radon_c2d_cube(phantom, radon_pars) Description: phantom - phantom (structure) ~.a - cube side (float, cm) ~.offset - offset of the cube from the center (float, cm) radon_pars - Radon transformation parameters (structure) ~.un - unit vectors of directions (float, Nx2 or Nx3, N-number of projection) ~.size - projection length (float, cm) ~.nBins - projection array length (int) ~.l - projection spatial support (float, cm, Mx1, M - projection length) (size, nBins) and l are mutually exclusive definitions P - projection data (float, MxN, M - projection length, N-number of projection) l - axis of projection (float, cm, Mx1, M - projection length) Example: % Generate equal solid angle layout of projections fbp_struct.nAz = 36; fbp_struct.nPolar = 36; fbp_struct.imtype = iradon_GetFBPImageType('XYZ'); fbp_struct.MaxGradient = 1; % maximum gradient (G/cm) fbp_struct.angle_sampling = 'UNIFORM_SPATIAL_FLIP'; pars = iradon_FBPGradTable(fbp_struct); % Radon transformation parameters radon_pars.un = pars.G; % unit vectors of the gradients radon_pars.size = 5; % projection spatial support (cm) radon_pars.nBins = 64; % length of the projection spatial support % Phantom parameters phantom.a = 2.2; % cube side (cm) phantom.offset = [0.1,-0.1,0]; % offset of the cube(cm) P = radon_c2d_cube(phantom, radon_pars); MatrixGUI(P) % view projections Legend: EPR-IT functions; MATLAB functions; comments. See also: |