Home > rest_20090422 > rest_ReadLutColorScheme.m

rest_ReadLutColorScheme

PURPOSE ^

Read look up table of color scheme By Xiao-Wei Song according to MRIcro's help forum

SYNOPSIS ^

function Result = rest_ReadLutColorScheme(ALutFilename)

DESCRIPTION ^

Read look up table of color scheme By Xiao-Wei Song according to MRIcro's help forum
------------------------------------------------------------------------------------------------------------------------------
    Copyright(c) 2007~2010
    State Key Laboratory of Cognitive Neuroscience and Learning in Beijing Normal University
    Written by Xiao-Wei Song 
    http://resting-fmri.sourceforge.net
20070918
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Read a binary LUT file-format to construct a look-up-table / color scheme
dawnwei.song@gmail.com
Code is translated from MRIcron's LoadColorScheme in nifti_img.pas, 20070918

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

DOWNLOAD ^

rest_ReadLutColorScheme.m

SOURCE CODE ^

0001 function Result = rest_ReadLutColorScheme(ALutFilename)
0002 %Read look up table of color scheme By Xiao-Wei Song according to MRIcro's help forum
0003 %------------------------------------------------------------------------------------------------------------------------------
0004 %    Copyright(c) 2007~2010
0005 %    State Key Laboratory of Cognitive Neuroscience and Learning in Beijing Normal University
0006 %    Written by Xiao-Wei Song
0007 %    http://resting-fmri.sourceforge.net
0008 %20070918
0009 %------------------------------------------------------------------------------------------------------------------------------
0010 %Read a binary LUT file-format to construct a look-up-table / color scheme
0011 %dawnwei.song@gmail.com
0012 %Code is translated from MRIcron's LoadColorScheme in nifti_img.pas, 20070918
0013 theLutFile = fopen(ALutFilename,'r');
0014 if theLutFile>0,
0015     try
0016         fseek(theLutFile,0,'eof');
0017         theSize =ftell(theLutFile);
0018         if any(theSize==[768, 800, 970]),
0019             fseek(theLutFile,theSize-768, 'bof');
0020             Result =zeros(256,3);
0021             Result(:,1) =fread(theLutFile, 256, 'uint8');
0022             Result(:,2) =fread(theLutFile, 256, 'uint8');
0023             Result(:,3) =fread(theLutFile, 256, 'uint8');            
0024             Result =Result/max(Result(:));
0025         else
0026             error('Non correct binary LUT file format that I don''t support currently');
0027         end
0028     catch
0029     end
0030     fclose(theLutFile);
0031 else
0032     error(sprintf('Failed to open color file: %s', ALutFilename));
0033 end
0034 
0035      % if (lZ =768) or (lZ = 800) or (lZ=970) then begin
0036         % //binary LUT
0037         % assignfile(lFdata,lStr);
0038         % Filemode := 0;
0039         % reset(lFdata,1);
0040         % seek(lFData,lZ-768);
0041         % GetMem( lBuff, 768);
0042         % BlockRead(lFdata, lBuff^, 768);
0043         % for lZ := 0 to 255 do begin
0044             % lHdr.LUT[lZ].rgbRed := lBuff^[lZ];
0045             % lHdr.LUT[lZ].rgbGreen := lBuff^[lZ+256];
0046             % lHdr.LUT[lZ].rgbBlue := lBuff^[lZ+512];
0047             % lHdr.LUT[lZ].rgbReserved := kLUTalpha;
0048         % end;
0049

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