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

fix rank hist rules

Browse Source
This commit is contained in:
John Cupitt 2021-01-13 11:20:38 +00:00
parent 3cd774a10c
commit 78d1a4ae57
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
libvips/morphology/rank.c
View File

@ -479,13 +479,14 @@ vips_rank_build( VipsObject *object )
/* Enable the hist path if it'll probably help. /* Enable the hist path if it'll probably help.
*/ */
if( in->BandFmt == VIPS_FORMAT_UCHAR ) { if( in->BandFmt == VIPS_FORMAT_UCHAR ) {
/* The hist path gets faster for windows larger than about /* The hist path is always faster for windows larger than about
* 3x3, or 10x10 for the special max/min case. * 10x10, and faster for >3x3 on the non-max/min case.
*/ */
if( rank->n < 10 ) if( rank->n > 90 )
rank->hist_path = TRUE; rank->hist_path = TRUE;
else if( rank->n < 90 && else if( rank->n > 10 &&
(rank->index == 0 || rank->index == rank->n - 1) ) rank->index != 0 &&
rank->index != rank->n - 1 )
rank->hist_path = TRUE; rank->hist_path = TRUE;
} }