sergiotarxz
/
libvips
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

gtkdoc for im_rank

This commit is contained in:
John Cupitt 2010-11-10 21:29:01 +00:00
parent 531feb10a1
commit 526b441d5f
2 changed files with 50 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
libvips/morphology/im_profile.c
View File

@ -9,6 +9,14 @@
* - gtk-doc
*/
/*
TODO
- walk a region over the image and avoid wio
*/
/*
This file is part of VIPS.

71
libvips/morphology/im_rank.c
View File

@ -1,15 +1,4 @@
/* @(#) Rank filter.
* @(#)
* @(#) int
* @(#) im_rank( in, out, xsize, ysize, order )
* @(#) IMAGE *in, *out;
* @(#) int xsize, ysize;
* @(#) int order;
* @(#)
* @(#) Also: im_rank_raw(). As above, but does not add a black border.
* @(#)
* @(#) Returns either 0 (success) or -1 (fail)
* @(#)
/* Rank filter.
*
* Author: JC
* Written on: 19/8/96
@ -30,6 +19,9 @@
* - sets Xoffset / Yoffset
* 7/10/04
* - oops, im_embed() size was wrong
* 10/11/10
* - cleanups
* - gtk-doc
*/
/*
@ -345,22 +337,15 @@ im_rank_raw( IMAGE *in, IMAGE *out, int xsize, int ysize, int order )
{
RankInfo *rnk;
/* Check parameters.
*/
if( !in ||
in->Coding != IM_CODING_NONE ||
vips_bandfmt_iscomplex( in->BandFmt ) ) {
im_error( "im_rank", "%s",
_( "input non-complex uncoded only" ) );
if( im_piocheck( in, out ) ||
im_check_uncoded( "im_rank", in ) ||
im_check_noncomplex( "im_rank", in ) )
return( -1 );
}
if( xsize > 1000 || ysize > 1000 || xsize <= 0 || ysize <= 0 ||
order < 0 || order > xsize * ysize - 1 ) {
im_error( "im_rank", "%s", _( "bad parameters" ) );
return( -1 );
}
if( im_piocheck( in, out ) )
return( -1 );
/* Save parameters.
*/
@ -402,18 +387,46 @@ im_rank_raw( IMAGE *in, IMAGE *out, int xsize, int ysize, int order )
return( 0 );
}
/* The above, with a border to make out the same size as in.
/**
* im_rank:
* @in: input image
* @out: output image
* @width: window width
* @height: window height
* @order: select which
*
* im_rank() does rank filtering on an image. A window of size @width by
* @height is passed over the image. At each position, the pixels inside the
* window are sorted into ascending order and the pixel at position @order is
* output. @order numbers from 0.
*
* It works for any non-complex image type, with any number of bands.
* The input is expanded by copying edge pixels before performing the
* operation so that the output image has the same size as the input.
* Edge pixels in the output image are therefore only approximate.
*
* For a median filter with mask size m (3 for 3x3, 5 for 5x5, etc.) use
*
* im_rank( in, out, m, m, m * m / 2 );
*
* The special cases n == 0 and n == m * m - 1 are useful dilate and
* expand operators.
*
* See also: im_conv(), im_fastcor().
*
* Returns: 0 on success, -1 on error
*/
int
im_rank( IMAGE *in, IMAGE *out, int xsize, int ysize, int order )
im_rank( IMAGE *in, IMAGE *out, int width, int height, int order )
{
IMAGE *t1 = im_open_local( out, "im_rank:1", "p" );
IMAGE *t1;
if( !t1 ||
if( !(t1 = im_open_local( out, "im_rank", "p" )) ||
im_embed( in, t1, 1,
xsize/2, ysize/2,
in->Xsize + xsize - 1, in->Ysize + ysize - 1 ) ||
im_rank_raw( t1, out, xsize, ysize, order ) )
width / 2, height / 2,
in->Xsize + width - 1, in->Ysize + height - 1 ) ||
im_rank_raw( t1, out, width, height, order ) )
return( -1 );
out->Xoffset = 0;