brede_write_mricro_roi

(export/brede/brede_write_mricro_roi.m)

Function Synopsis

brede_write_mricro_roi(V, varargin)

Help text

 brede_write_mricro_roi - Write a MRIcro 'roi' file

       brede_write_mricro_roi(V)

       Input:     V         'Vol' structure

       Property:  Filename  [ {tmp.roi} ] Filename for written roi
                            file 

       Writes a volume mask in the MRIcro's "unique and fairly
       unusual [roi] format". 

       The format is a kind of slice-based run length encoding: 
         [ sliceIndex wordsInSlice beginIndex runLength beginIndex 
         runLength ... sliceIndex wordsInSlice beginIndex runLength 
         beginIndex runLength ... ]

       Indices seem to start from left posterior inferior (if the
       volume is oriented in the SPM99-ANALYZE way). Indices and
       lengths seem to be stored as 16-bit little endians, thus the
       format seems not able to store large 512x512 slices.

       There is no stereotaxic information store in the file, - only
       voxel indices.

       Example: 
         V.volume    = zeros(3,3,3);
         V.origin    = [ 2 2 2 ];
         V.voxelSize = [ 0.003 0.003 0.003 ];
         V.volume(2,2,2) = 1;
         brede_write_mricro_roi(V, 'filename', 'test')

       See also BREDE, BREDE_WRITE, BREDE_WRITE_ANALYZE. 

 $Id: brede_write_mricro_roi.m,v 1.3 2007/11/21 13:35:06 fn Exp $

Cross-Reference Information

brede_struct_guesstypeexport/brede/brede_struct_guesstype.m