img2igt

PURPOSE ^

IMG2IGT returns an IGT-compatible image matrix from any EIDORS

SYNOPSIS ^

function igt = img2igt(img)

DESCRIPTION ^

IMG2IGT returns an IGT-compatible image matrix from any EIDORS
 IMG struct. 

 IGT = IMG2IGT(IMG) returns a vector NFrames-by-912.

 WARNING: When the mesh stored in fwd_model is not a resterised 32-by-32
 matrix, this conversion results in a loss of quality.
 
 See also IGT2IMG, EIDORS_SAVEIMG.

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function igt = img2igt(img)
0002 %IMG2IGT returns an IGT-compatible image matrix from any EIDORS
0003 % IMG struct.
0004 %
0005 % IGT = IMG2IGT(IMG) returns a vector NFrames-by-912.
0006 %
0007 % WARNING: When the mesh stored in fwd_model is not a resterised 32-by-32
0008 % matrix, this conversion results in a loss of quality.
0009 %
0010 % See also IGT2IMG, EIDORS_SAVEIMG.
0011 
0012 % (C) 2009 by Bartlomiej Grychtol. Licensed under GPL v2 or v3
0013 % $Id: img2igt.m 5290 2016-11-02 08:44:14Z fab-b $
0014 
0015 % render the image on a 34-by-34 grid
0016 img.calc_colours.npoints=34;
0017 greit_m = calc_slices(img);
0018 % reduce to 32-by-32
0019 greit_m = greit_m(2:33,2:33,:); 
0020 
0021 greit_m(isnan(greit_m)) = 0;
0022 
0023 
0024 % create an IGT mask
0025 ind=[8:25,39:58,70:91,101:124,132:157,163:190,194:223,225:800, ...
0026         802:831,835:862,868:893,901:924,934:955,967:986,1000:1017];
0027 igt_m = zeros(1,1024);
0028 igt_m(ind) = 1:912;
0029 igt_m = reshape(igt_m,32,32)';
0030 
0031 % create IGT vector
0032 igt=zeros(size(img.elem_data,2),912);
0033 for i = 1:32
0034     for j = 1:32
0035         if igt_m(i,j)>0 
0036             igt(:,igt_m(i,j)) = greit_m(i,j,:);
0037         end
0038     end
0039 end

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