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| -rw-r--r-- | pnmcrop.html | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/pnmcrop.html b/pnmcrop.html index bdd457cf..e2282d1f 100644 --- a/pnmcrop.html +++ b/pnmcrop.html @@ -2,7 +2,7 @@ <html><head><title>Pnmcrop User Manual</title></head> <body> <h1>pnmcrop</h1> -Updated: 04 October 2019 +Updated: 16 August 2020 <br> <a href="#index">Table Of Contents</a> @@ -261,7 +261,17 @@ fails if there is no apparent background color in the original image <dd>no modification to image <dt>minimize - <dd>output is a single pixel (of the background color) + <dd>output is a single row, column, or pixel (of the background color). + If you crop both vertically and horizontally (the default), it is a + single pixel. If you crop only vertically, a single row, of the + original width. If you crop only horizontally, it is a single column, + of the original height. + + The background can be more than one color when you specify + <b>-closeness</b>, so it matters which row, column, or pixel remains. + If you crop on the top and not bottom, it is the last row that remains. + If you crop on both the top and bottom, it is the middle row that + remains. The other cases follow similarly. <dt>maxcrop <dd>This odd function selects a hypothetical cropping which is not even |