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mri_isgray.c File Reference
#include "mrilib.h"Go to the source code of this file.
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| int | mri_isgray (MRI_IMAGE *im) |
Function Documentation
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Returns 1 if the image is RGB and R=G=B for all voxels, otherwise returns 0. [03 Dec 2003] Definition at line 6 of file mri_isgray.c. References ENTRY, MRI_IMAGE::kind, MRI_RGB_PTR, MRI_IMAGE::nvox, and RETURN. Referenced by mri_read_mpeg().
00007 {
00008 register int nvox , ii ;
00009 register byte *bar ;
00010
00011 ENTRY("mri_isgray") ;
00012
00013 if( im == NULL || im->kind != MRI_rgb ) RETURN( 0 );
00014
00015 nvox = im->nvox ;
00016 bar = MRI_RGB_PTR(im) ;
00017 for( ii=0 ; ii < nvox ; ii++ )
00018 if( bar[3*ii] != bar[3*ii+1] ||
00019 bar[3*ii] != bar[3*ii+2] ) RETURN( 0 );
00020
00021 RETURN( 1 ) ;
00022 }
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