.TH RAWNJL2 1 "05 April 98" "DICOM PS3" "JPEG-LS codec".SH NAMErawnjl2 \- JPEG-LS compress/decompress from raw file.SH SYNOPSIS.HP 10.B rawnjl2.B \-rows|\-height|\-h " rows".B \-columns|\-width|\-w " cols".B \-bits|\-depth " bits"[.B \-d|\-decompress][.B \-near " n"][.B \-T1|\-Ta " n"][.B \-T2|\-Tb " n"][.B \-T3|\-Tc " n"][.B \-reset " n"][.B \-nomarkers][.B \-noruns].so man1/binin.so.so man1/binout.so.SH DESCRIPTION.LP.B rawnjl2either reads the named raw input file and compresses it per the JPEG-LS(ISO DIS 14495-1) standard, or reads a compressed file and decompressesit into a raw output file (when the \-d option is specified)..LPThe default compression is lossless, though near-lossless compressioncan be selected by specifying a pixel value error with the \-near option..SH OPTIONSError messages go to standard error..PP.PPOptions specific to this program are:.TP.BI \-rows|\-height|\-h " rows".RSRequired for compression..RE.TP.BI \-columns|\-width|\-w " cols".RSRequired for compression..RE.TP.BI \-bits|\-depth|\-d " bits".RSRequired for compression..RE.TP.BI \-d|\-decompress.RSSelects decompression rather than compression (the default)..RE.TP.BI \-near " n".RSIf not zero (the default), selects near\-lossless compression. Thevalue specified is the amount of error allowed in the reconstructedpixel value realtive to the original pixel value..RE.TP.BI \-T1|\-Ta " n".TP.BI \-T2|\-Tb " n".TP.BI \-T3|\-Tc " n".TP.BI \-reset " n".RSSpecify values other than the defaults for various compressionparameters (see the standard for explanation)..RE.TP.BI \-nomarkers.RSTurns off writing (and reading) JPEG markers in the compressed output.Useful for examining the coompressed bitstream, though zero bit stuffingafter 0xff bytes is still performed (and expected on decompression). Impliesthat the image parameters and non-default compression parameters need to bespecified on the command line during decompression..RE.TP.BI \-noruns.RSTurns off run mode during compression (and also needs to be specified fordecompression). Thgis creates a non-standard bitstream bit is interestingto test the additional effectiveness the low entropy (less than one bit perpixel) run mode..RE.SH ENVIRONMENT.LP\ .SH EXAMPLES.LP\ .RE% rawnjl2 -h 4 -e 4 -bits 8 -input-endian little 1.raw 1.jls.RE% rawnjl2 -d -output-endian little 1.jls 1.cmp.RE% cmp 1.raw 1.cmp.SH FILES.LP\ .SH SEE ALSO.LPhttp://www.jpeg.org/.SH AUTHORCopyright (C) 1993-1998. David A. Clunie. All rights reserved..SH BUGSThe near-lossless mode may trigger a bug that cause mapped error valuesto go negative and lead to a failed assertion. The standard seems unlcearon this point..LPThe compressed datastream does not seem to match the HP LOCO 0.90 implementationfor some images, though the tiny example file in the standard compresses tomatch the standard and the HP implementation.