62 lines
2.3 KiB
Groff
62 lines
2.3 KiB
Groff
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.TH OPJ_JP3D_DECOMPRESS "1" "October 2019" "opj_jp3d_decompress 2.3.1" "User Commands"
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.SH NAME
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opj_jp3d_decompress \- decompress jp3d files
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.SH SYNOPSIS
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.B opj_jp3d_decompress
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[optional arguments] -i input.{jp3d, j3d} -o output.{pgx, bin} -m characteristics.img
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.SH OPTIONS
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.SS
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Required Parameters (except with \fB\-h\fR):
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.HP
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\fB\-i\fR <compressed file> ( *.jp3d, *.j3d )
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.IP
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Currently accepts J3D\-files. The file type is identified based on its suffix.
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.HP
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\fB\-o\fR <decompressed file> ( *.pgx, *.bin )
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.IP
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Currently accepts PGX\-files and BIN\-files. Binary data is written to the file (not ascii).
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If a PGX filename is given, there will be as many output files as slices;
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an indice starting from 0 will then be appended to the output filename,
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just before the "pgx" extension.
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.HP
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\fB\-m\fR <characteristics file> ( *.img )
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.IP
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Required only for BIN\-files. Ascii data of volume characteristics is written.
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.SS
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Optional arguments
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.HP
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\fB\-h\fR
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.IP
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Display the help information
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.HP
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\fB\-r\fR <RFx,RFy,RFz>
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.IP
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Set the number of highest resolution levels to be discarded on each dimension.
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The volume resolution is effectively divided by 2 to the power of the
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number of discarded levels. The reduce factor is limited by the
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smallest total number of decomposition levels among tiles.
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.HP
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\fB\-l\fR <number of quality layers to decode>
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.IP
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Set the maximum number of quality layers to decode. If there are
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less quality layers than the specified number, all the quality layers
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are decoded.
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.HP
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\fB\-O\fR original\-file
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.IP
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This option offers the possibility to compute some quality results
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for the decompressed volume, like the PSNR value achieved or the global SSIM value.
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Needs the original file in order to compare with the new one.
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NOTE: Only valid when \fB\-r\fR option is 0,0,0 (both original and decompressed volumes have same resolutions)
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NOTE: If original file is .BIN file, the volume characteristics file shall be defined with the \fB\-m\fR option.
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(i.e. \fB\-O\fR original\-BIN\-file \fB\-m\fR original\-IMG\-file)
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.HP
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\fB\-BE\fR
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.IP
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Define that the recovered volume data will be saved with big endian byte order.
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By default, little endian byte order is used.
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.SH AUTHOR
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This manual page was written by Mathieu Malaterre <malat@debian.org> and Hugo
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Lefeuvre <hle@debian.org> for the Debian GNU/Linux system, but may be used by
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others.
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