diff options
| author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2022-01-27 02:39:38 +0000 |
|---|---|---|
| committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2022-01-27 02:39:38 +0000 |
| commit | 9c185a3c618cfaff1ba92f3094f1a4e395013916 (patch) | |
| tree | 7a0057177b22f89a76dfd53e938aa56f260983b5 /pgmmedian.html | |
| parent | 1feb4eb4d9783d530653f6e6ac8bc4264732501d (diff) | |
| download | netpbm-mirror-9c185a3c618cfaff1ba92f3094f1a4e395013916.tar.gz netpbm-mirror-9c185a3c618cfaff1ba92f3094f1a4e395013916.tar.xz netpbm-mirror-9c185a3c618cfaff1ba92f3094f1a4e395013916.zip | |
miscellaneous update
git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@4264 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'pgmmedian.html')
| -rw-r--r-- | pgmmedian.html | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/pgmmedian.html b/pgmmedian.html index e0f20b36..3c90f6a7 100644 --- a/pgmmedian.html +++ b/pgmmedian.html @@ -2,7 +2,7 @@ <html><head><title>Pgmmedian User Manual</title></head> <body> <h1>pgmmedian</h1> -Updated: 28 August 2005 +Updated: 20 January 2022 <br> <a href="#index">Table Of Contents</a> @@ -41,6 +41,11 @@ the output is the median of a certain set of pixels in the neighborhood of the corresponding input pixel. The effect is to eliminate locally extreme values. Such pixels typically show up as speckles. +<p>Pixels at the edges of the image, pixels where the convolution kernel would +go off the edge of the image, are just copied. For example, if <b>-height</b> +is 9, the first 4 and last 4 rows of the input image are just copied to the +output. + <p>See the <b>-type</b> and <b>-cutoff</b> options for information on how <b>pgmmedian</b> chooses between the two methods. @@ -73,12 +78,16 @@ value. <dd>Width of the median mask to apply. +<p>Maximum allowed is the width of the input image. + <p>Default is 3. <dt><b>-height=</b><i>n</i> <dd>Height of the median mask to apply. +<p>Maximum allowed is the height of the input image. + <p>Default is 3. <dt><b>-type</b> <i>median_type</i> |