crop(1) - Plan 9 from User Space

From adc93f6097615f16d57e8a24a256302f2144ec4e Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 17:37:50 +0000 Subject: cut out the html - they're going to cause diffing problems. --- man/man1/crop.html | 127 ----------------------------------------------------- 1 file changed, 127 deletions(-) delete mode 100644 man/man1/crop.html (limited to 'man/man1/crop.html') diff --git a/man/man1/crop.html b/man/man1/crop.html deleted file mode 100644 index 34a4eefb..00000000 --- a/man/man1/crop.html +++ /dev/null @@ -1,127 +0,0 @@ - -crop(1) - Plan 9 from User Space - - - - -

CROP(1) CROP(1) -

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-

NAME
- -
- - crop, iconv – frame, crop, and convert image
- -
-

SYNOPSIS
- -
- - crop [ −c red green blue ] [ −i n | −x dx | −y dy | −r minx miny - maxx maxy ] [ −t tx ty ] [ −b red green blue ] [ file ] -
- - iconv [ −u ] [ −c chandesc ] [ file ]
- -
-

DESCRIPTION
- -
- - Crop reads an image(7) file (default standard input), crops it, - and writes it as a compressed image(7) file to standard output. - There are two ways to specify a crop, by color value or by geometry. - They may be combined in a single run of crop, in which case the - color value crop will be done first. -
- - The −c option takes a red-green-blue triplet as described in color(3). - (For example, white is 255 255 255.) The corresponding color is - used as a value to be cut from the outer edge of the picture; - that is, the image is cropped to remove the maximal outside rectangular - strip in which every pixel has the specified color. - -
- - The −i option insets the image rectangle by a constant amount, - n, which may be negative to generate extra space around the image. - The −x and −y options are similar, but apply only to the x or - y coordinates of the image. -
- - The −r option specifies an exact rectangle. -
- - The −t option specifies that the image’s coordinate system should - be translated by tx, ty as the last step of processing. -
- - The −b option specifies a background color to be used to fill - around the image if the cropped image is larger than the original, - such as if the −i option is given a negative argument. This can - be used to draw a monochrome frame around the image. The default - color is black. -
- - Iconv changes the format of pixels in the image file (default - standard input) and writes the resulting image to standard output. - Pixels in the image are converted according to the channel descriptor - chandesc, (see image(7)). For example, to convert a 4-bit-per-pixel - grey-scale image to an 8-bit-per-pixel color-mapped - image, chandesc should be m8. If chandesc is not given, the format - is unchanged. The output image is by default compressed; the −u - option turns off the compression.
- -
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EXAMPLE
- -
- - To crop white edges off the picture and add a ten-pixel pink border,
- -
- - crop −c 255 255 255 −i −10 −b 255 150 150 imagefile > cropped - -
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SOURCE
- -
- - /usr/local/plan9/src/cmd/draw/crop.c - -
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SEE ALSO
- -
- - image(7), color(3)
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-

BUGS
- -
- - Iconv should be able to do Floyd-Steinberg error diffusion or - dithering when converting to small image depths.
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- -

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