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| author | rsc <devnull@localhost> | 2005-01-14 03:45:44 +0000 |
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| committer | rsc <devnull@localhost> | 2005-01-14 03:45:44 +0000 |
| commit | 78e51a8c6678b6e3dff3d619aa786669f531f4bc (patch) | |
| tree | 015e00fde4fc837fd31b705e18d17dc913829388 /man/man1/crop.html | |
| parent | 2634795b5f0053bc0ff08e5d7bbc0eda8efea061 (diff) | |
| download | plan9port-78e51a8c6678b6e3dff3d619aa786669f531f4bc.tar.gz plan9port-78e51a8c6678b6e3dff3d619aa786669f531f4bc.tar.bz2 plan9port-78e51a8c6678b6e3dff3d619aa786669f531f4bc.zip | |
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diff --git a/man/man1/crop.html b/man/man1/crop.html new file mode 100644 index 00000000..34a4eefb --- /dev/null +++ b/man/man1/crop.html @@ -0,0 +1,127 @@ +<head> +<title>crop(1) - Plan 9 from User Space</title> +<meta content="text/html; charset=utf-8" http-equiv=Content-Type> +</head> +<body bgcolor=#ffffff> +<table border=0 cellpadding=0 cellspacing=0 width=100%> +<tr height=10><td> +<tr><td width=20><td> +<tr><td width=20><td><b>CROP(1)</b><td align=right><b>CROP(1)</b> +<tr><td width=20><td colspan=2> + <br> +<p><font size=+1><b>NAME </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + crop, iconv – frame, crop, and convert image<br> + +</table> +<p><font size=+1><b>SYNOPSIS </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <tt><font size=+1>crop</font></tt> [ <tt><font size=+1>−c</font></tt> <i>red green blue</i> ] [ <tt><font size=+1>−i</font></tt> <i>n</i> | <tt><font size=+1>−x</font></tt> <i>dx</i> | <tt><font size=+1>−y</font></tt> <i>dy</i> | <tt><font size=+1>−r</font></tt> <i>minx miny + maxx maxy</i> ] [ <tt><font size=+1>−t</font></tt> <i>tx ty</i> ] [ <tt><font size=+1>−b</font></tt> <i>red green blue</i> ] [ <i>file</i> ] + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <tt><font size=+1>iconv</font></tt> [ <tt><font size=+1>−u</font></tt> ] [ <tt><font size=+1>−c</font></tt> <i>chandesc</i> ] [ <i>file</i> ]<br> + +</table> +<p><font size=+1><b>DESCRIPTION </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <i>Crop</i> reads an <a href="../man7/image.html"><i>image</i>(7)</a> file (default standard input), crops it, + and writes it as a compressed <a href="../man7/image.html"><i>image</i>(7)</a> 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 <i>crop</i>, in which case the + color value crop will be done first. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + The <tt><font size=+1>−c</font></tt> option takes a red-green-blue triplet as described in <a href="../man3/color.html"><i>color</i>(3)</a>. + (For example, white is <tt><font size=+1>255 255 255</font></tt>.) 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. + + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + The <tt><font size=+1>−i</font></tt> option insets the image rectangle by a constant amount, + <i>n</i>, which may be negative to generate extra space around the image. + The <tt><font size=+1>−x</font></tt> and <tt><font size=+1>−y</font></tt> options are similar, but apply only to the <i>x</i> or + <i>y</i> coordinates of the image. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + The <tt><font size=+1>−r</font></tt> option specifies an exact rectangle. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + The <tt><font size=+1>−t</font></tt> option specifies that the image’s coordinate system should + be translated by <i>tx</i>, <i>ty</i> as the last step of processing. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + The <tt><font size=+1>−b</font></tt> 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 <tt><font size=+1>−i</font></tt> option is given a negative argument. This can + be used to draw a monochrome frame around the image. The default + color is black. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <i>Iconv</i> changes the format of pixels in the image <i>file</i> (default + standard input) and writes the resulting image to standard output. + Pixels in the image are converted according to the channel descriptor + <i>chandesc</i>, (see <a href="../man7/image.html"><i>image</i>(7)</a>). For example, to convert a 4-bit-per-pixel + grey-scale image to an 8-bit-per-pixel color-mapped + image, <i>chandesc</i> should be <tt><font size=+1>m8</font></tt>. If <i>chandesc</i> is not given, the format + is unchanged. The output image is by default compressed; the <tt><font size=+1>−u</font></tt> + option turns off the compression.<br> + +</table> +<p><font size=+1><b>EXAMPLE </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + To crop white edges off the picture and add a ten-pixel pink border,<br> + + <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <tt><font size=+1>crop −c 255 255 255 −i −10 −b 255 150 150 imagefile > cropped<br> + </font></tt> + </table> + +</table> +<p><font size=+1><b>SOURCE </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <tt><font size=+1>/usr/local/plan9/src/cmd/draw/crop.c<br> + </font></tt> +</table> +<p><font size=+1><b>SEE ALSO </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <a href="../man7/image.html"><i>image</i>(7)</a>, <a href="../man3/color.html"><i>color</i>(3)</a><br> + +</table> +<p><font size=+1><b>BUGS </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <i>Iconv</i> should be able to do Floyd-Steinberg error diffusion or + dithering when converting to small image depths.<br> + +</table> + +<td width=20> +<tr height=20><td> +</table> +<!-- TRAILER --> +<table border=0 cellpadding=0 cellspacing=0 width=100%> +<tr height=15><td width=10><td><td width=10> +<tr><td><td> +<center> +<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> +</center> +</table> +<!-- TRAILER --> +</body></html> |