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| author | Paul B Mahol <onemda@gmail.com> | 2017-08-05 10:36:48 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2017-08-05 10:36:48 +0200 |
| commit | c47491041466043a260412504f4294a2b458ebdb (patch) | |
| tree | b7c5755b295c2c3125bd3a116273c0797b6e576a /doc/filters.texi | |
| parent | 44e9783ab9a1a26d718a9360adfb528d5015df6e (diff) | |
doc/filters.texi: add yet another laplacian edge detector
Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index a920bf935e..7e5a9a625a 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -5881,6 +5881,12 @@ convolution="0 1 0 1 -4 1 0 1 0:0 1 0 1 -4 1 0 1 0:0 1 0 1 -4 1 0 1 0:0 1 0 1 -4 @end example @item +Apply laplacian edge detector which includes diagonals: +@example +convolution="1 1 1 1 -8 1 1 1 1:1 1 1 1 -8 1 1 1 1:1 1 1 1 -8 1 1 1 1:1 1 1 1 -8 1 1 1 1:5:5:5:1:0:128:128:0" +@end example + +@item Apply emboss: @example convolution="-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2" |