NAME

       opj_compress  -  This  program  reads  in  an image of a certain type and converts it to a
       jpeg2000 file. It is part of the OpenJPEG library.

       Valid input image extensions are .bmp, .pgm, .pgx, .png, .pnm, .ppm, .raw,  .tga,  .tif  .
       For PNG resp. TIF it needs libpng resp. libtiff .

       Valid output image extensions are .j2k, .jp2

SYNOPSIS

       opj_compress -i infile.bmp -o outfile.j2k

       opj_compress -ImgDir directory_name -OutFor jp2

       opj_compress -h Print a help message and exit.

       See JPWL OPTIONS for special options

OPTIONS

       -b  n,n
              (Size of code block (e.g. -b 32,32). Default: 64 x 64)

       -c  n  (Size of precinct (e.g. -c 128,128). Default: 2^15 x 2^15)

       -cinema2K  fps
              Digital Cinema 2K profile compliant codestream. Valid fps values are 24 or 48.

       -cinema4K
              Digital Cinema 4K profile compliant codestream. Does not need an fps: default is 24
              fps.

       -d  X,Y
              (Offset of image origin (e.g. -d 150,300))

       -h     Print a help message and exit.

       -i  name
              (input file name)

       -n  n  (Number of resolutions. Default: 6)

       -o  name
              (output file name)

       -p  name
              Progression order. name can be one out of:LRCP, RLCP, RPCL,  PCRL,  CPRL.  Default:
              LRCP.

       -q  n  different psnr for successive layers
              Note: (options -r and -q cannot be used together)

       -r  n  different  compression  ratio(s) for successive layers. The rate specified for each
              quality level is the desired compression factor.
              Note: (options -r and -q cannot be used together)

       -s  X,Y
              sub-sampling factor (e.g. -s 2,2). Default: No sub-sampling in x or y direction.
              Remark: sub-sampling bigger than 2 can produce errors.

       -t  W,H
              (Size of tile (e.g. -t 512,512) )

       -x  name
              (Create index file and fill it. Default: no index file)

       -EPH   (Write EPH marker after each header packet. Default:no EPH)

       -F  rawWidth,rawHeight,rawComp,rawBitDepth,s_or_u
              characteristics of the raw input image

       -I     (Use the irreversible DWT 9-7. Default: Reversible DWT 5-3)

       -ImgDir  directory_name
              (directory containing input files)

       -M  n  mode switch with values: 1, 2, 4, 8, 16, 32. Default:No mode switch activated.
              Meaning:
              BYPASS(1)
              RESET(2)
              RESTART(4)
              VSC(8)
              ERTERM(16)
              SEGMARK(32)
              Values can be added: RESTART(4) + RESET(2) + SEGMARK(32) = -M 38

       -OutFor ext
              (extension for output files)

       -POC  TtileNr=resolutionStart,  componentStart,  layerEnd,  resolutionEnd,   componentEnd,
       progressionOrder
              (see Examples)

       -ROI c=n,U=n
              quantization  indices upshifted for component c (0 or 1 or 2) with a value of U (>=
              0 and <= 37)
              e.g. -ROI c=0,U=25

       -SOP   (Write SOP marker before each packet. Default: No SOP marker in the codestream.)

       -T X,Y (Offset of the origin of the tiles (e.g. -T 100,75) )

       -W     (see JPWL OPTIONS)

JPWL OPTIONS

       Options usable only if the library has been compiled with -DUSE_JPWL

       -W    h<tilepart><=type>,    s<tilepart><=method>,    a=<addr>,    z=<size>,    g=<range>,
       p<tilepart:pack><=type>

       h selects the header error protection (EPB): type can be
          [0=none 1,absent=predefined 16=CRC-16 32=CRC-32 37-128=RS]
          if tilepart is absent, it is for main and tile headers
          if tilepart is present, it applies from that tile
            onwards, up to the next h<> spec, or to the last tilepart
            in the codestream (max. 16 specs)

       p selects the packet error protection (EEP/UEP with EPBs)
         to be applied to raw data: type can be
          [0=none 1,absent=predefined 16=CRC-16 32=CRC-32 37-128=RS]
          if tilepart:pack is absent, it is from tile 0, packet 0
          if tilepart:pack is present, it applies from that tile
            and that packet onwards, up to the next packet spec
            or to the last packet in the last tilepart in the stream
            (max. 16 specs)

       s enables sensitivity data insertion (ESD): method can be
          [-1=NO ESD 0=RELATIVE ERROR 1=MSE 2=MSE REDUCTION 3=PSNR
           4=PSNR INCREMENT 5=MAXERR 6=TSE 7=RESERVED]
          if tilepart is absent, it is for main header only
          if tilepart is present, it applies from that tile
            onwards, up to the next s<> spec, or to the last tilepart
            in the codestream (max. 16 specs)

       g determines the addressing mode: range can be
          [0=PACKET 1=BYTE RANGE 2=PACKET RANGE]

       a determines the size of data addressing: addr can be
          2/4 bytes (small/large codestreams). If not set, auto-mode

       z determines the size of sensitivity values: size can be
          1/2 bytes, for the transformed pseudo-floating point value

EXAMPLES

       opj_compress -i file.bmp -o file.j2k -r 20,10,1 (compress 20x, then 10x, then lossless).

       opj_compress -i file.ppm -o file.j2k -q 30,40,50

       opj_compress -i file.pgx -o file.j2k -POC T1=0,0,1,5,3,CPRL

       opj_compress -i lena.raw -o lena.j2k -F 512,512,3,8,u

AUTHORS

       Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
       Copyright (c) 2002-2014, Professor Benoit Macq
       Copyright (c) 2001-2003, David Janssens
       Copyright (c) 2002-2003, Yannick Verschueren
       Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
       Copyright (c) 2005, Herve Drolon, FreeImage Team
       Copyright (c) 2006-2007, Parvatha Elangovan

SEE ALSO

       opj_decompress(1) opj_dump(1)