ppm2tiff: invalid option -- '-' LIBTIFF, Version 4.0.8 Copyright (c) 1988-1996 Sam Leffler Copyright (c) 1991-1996 Silicon Graphics, Inc. usage: ppm2tiff [options] input.ppm output.tif where options are: -r # make each strip have no more than # rows -R # set x&y resolution (dpi) -c jpeg[:opts] compress output with JPEG encoding -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding -c zip[:opts] compress output with deflate encoding -c packbits compress output with packbits encoding (the default) -c g3[:opts] compress output with CCITT Group 3 encoding -c g4 compress output with CCITT Group 4 encoding -c none use no compression algorithm on output JPEG options: # set compression quality level (0-100, default 75) r output color image as RGB rather than YCbCr LZW and deflate options: # set predictor value For example, -c lzw:2 to get LZW-encoded data with horizontal differencing

ppm2tiff: invalid option -- '-' LIBTIFF, Version 4.0.8 Copyright (c) 1988-1996 Sam Leffler Copyright (c) 1991-1996 Silicon Graphics, Inc. usage: ppm2tiff [options] input.ppm output.tif where options are: -r # make each strip have no more than # rows -R # set x&y resolution (dpi) -c jpeg[:opts] compress output with JPEG encoding -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding -c zip[:opts] compress output with deflate encoding -c packbits compress output with packbits encoding (the default) -c g3[:opts] compress output with CCITT Group 3 encoding -c g4 compress output with CCITT Group 4 encoding -c none use no compression algorithm on output JPEG options: # set compression quality level (0-100, default 75) r output color image as RGB rather than YCbCr LZW and deflate options: # set predictor value For example, -c lzw:2 to get LZW-encoded data with horizontal differencing