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PNMTORLE !!!PNMTORLE NAME SYNOPSIS DESCRIPTION OPTIONS EXAMPLES SEE ALSO AUTHOR ---- !!NAME pnmtorle - convert a Netpbm image file into an RLE image file. !!SYNOPSIS __pnmtorle__ [[ __-h__ ] [[ __-v__ ] [[ __-a__ ] [[ __-o__ ''outfile'' ] [[ ''pnmfile'' ] !!DESCRIPTION This program converts Netpbm image files into Utah RLE(5) image files. You can include an alpha mask. If the input is a multiple image file, the output consists of several concatenated RLE images. The RLE file will contain either a three channel color image (24 bits) or a single channel grayscale image (8 bits) depending upon the pnm file depth. If a converted ppm is displayed on an 8 bit display, the image must be dithered. In order to produce a better looking image (on 8 bit displays), it is recommended that the image be quantizing (to 8 bit mapped color) prior to its display. This may be done by piping the output of this program into the Utah mcut(1) or rlequant(1) utilities. An example of this is shown later. !!OPTIONS __-v__ This option will cause pnmtorle to operate in verbose mode. The header information is written to __-h__ This option allows the header of the Netpbm image to be dumped to __-a__ This option causes pnmtorle to include an alpha channel in the output image. The alpha channel is based on the image: Wherever a pixel is black, the corresponding alpha value is transparent. Everywhere else, the alpha value is fully opaque. __-o__ ''outfile'' If specified, the output will be written to this file. If ''outfile'' is '' ''pnmfile'' The name of the Netpbm image data file to be converted. If not specified, standard input is assumed. !!EXAMPLES pnmtorle -v file.ppm -o file.rle While running in verbose mode, convert file.ppm to RLE format and store resulting data in file.rle. pnmtorle -h file.pgm Dump the header information of the Netpbm file called file.pgm. !!SEE ALSO rletopnm(1), urt(1), RLE(5). !!AUTHOR Wes Barris Army High Performance Computing Research Center (AHPCRC) Minnesota Supercomputer Center, Inc. ----
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