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im_flasecolour gtkdoc

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This commit is contained in:
John Cupitt 2010-01-29 14:20:45 +00:00
parent b84b08a883
commit 849823edcb
1 changed files with 20 additions and 22 deletions
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42
libvips/conversion/im_falsecolour.c
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@ -1,17 +1,4 @@
/* @(#) Maps a one band uchar in image to a 3 band uchar out image. The
* @(#) colours are chosen to give an image of uniform luminance, but
* @(#) with a wide range of hues.
* @(#)
* @(#) Input should be either memory mapped or in buffer, out should have
* @(#) been set by a call to im_openout() or im_setbuf().
* @(#)
* @(#) Usage:
* @(#)
* @(#) int
* @(#) im_falsecolour( IMAGE *in, IMAGE *out )
* @(#)
* @(#) Returns 0 on success and -1 on error
* @(#)
/* im_falsecolour
*
* 23/6/95 JC
* - rewritten for PIO
@ -20,6 +7,9 @@
* - uses falsecolour scale from PET scanner
* 7/4/06
* - hmm, reversed scale
* 29/1/10
* - cleanups
* - gtkdoc
*/
/*
@ -323,7 +313,18 @@ static unsigned char PET_colour[][3] = {
{ 174, 0, 0 }
};
/* False colour. One band uchar images only.
/**
* im_falsecolour:
* @in: input image
* @out: output image
*
* Turn a 1-band 8-bit image into a 3-band 8-bit image with a false colour
* map. The map is supposed to make small differences in brightness more
* obvious.
*
* See also: im_maplut().
*
* Returns: 0 on success, -1 on error
*/
int
im_falsecolour( IMAGE *in, IMAGE *out )
@ -332,14 +333,11 @@ im_falsecolour( IMAGE *in, IMAGE *out )
/* Check our args.
*/
if( im_piocheck( in, out ) )
if( im_piocheck( in, out ) ||
im_check_mono( "im_falsecolour", in ) ||
im_check_uncoded( "im_falsecolour", in ) ||
im_check_format( "im_falsecolour", in, IM_BANDFMT_UCHAR ) )
return( -1 );
if( in->Bands != 1 || in->Coding != IM_CODING_NONE ||
in->BandFmt != IM_BANDFMT_UCHAR ) {
im_error( "im_falsecolour",
"%s", _( "input image not one band uchar uncoded" ) );
return( -1 );
}
if( !(lut = im_image( (PEL *) PET_colour,
1, 256, 3, IM_BANDFMT_UCHAR )) )