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<!doctype HTML public "-//W3O//DTD W3 HTML 2.0//EN"><HTML><HEAD><TITLE>rgb2gif</TITLE><link rev=made href=mailto:esr@snark.thyrsus.com></HEAD><BODY>Go to <a href="index.html">index page</a>.<CENTER><H1>rgb2gif</H1></CENTER>A program to convert 24 bit images to a GIF image using color quantization.<P><H1>Usage:</H1><pre>rgb2gif [-q] [-c #Colors] [-1] -s Width Height [-h] RGBFile</pre>If no RGBFile is given, RGB2Gif will try to read a GIF file from stdin.<P><H1>Memory required:</H1>Screen.<H1>Options:</H1><DL><DT> [-q]<DD> Quiet mode. Defaulte off on MSDOS, on under UNIX. Controls printout of running scan lines. Use -q- to invert.<P><DT> [-c #Colors] <DD> Specifies number of colors to use, in bits per pixels, so '-c 8' specifies actually 256 colors (maximum and default).<P><DT> [-1]<DD> Only one file in the format of RGBRGB... triplets (Each of R, G, B is a byte) is read from input. This file size is 3 * Width * Height (see '-s' below. If stdin is used for input, this option is implicitly applied. The default (if not '-1') is 3 files with the names RGBFile.R, RGBFile.G, RGBFile.B, each of which is Width * Height bytes.<P><DT> [-s Width Height]<DD> Specifies the size of the image to read.<P><DT> [-h]<DD> Print one line of command line help, similar to Usage above.<P></DL><H1>Author:</H1>Gershon Elber<HR><ADDRESS>Eric S. Raymond <A HREF="mailto:esr@thyrsus.com"><esr@snark.thyrsus.com></A></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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