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j2k_to_image(1)             converts jpeg2000 files            j2k_to_image(1)




NAME

       j2k_to_image  -  This program reads in a jpeg2000 image and converts it
       to another image type. It is part of the OpenJPEG library.

       Valid input image extensions are .j2k, .jp2, .j2c, .jpt

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


SYNOPSIS

       j2k_to_image -i infile.j2k -o outfile.png

       j2k_to_image -ImgDir images/ -OutFor bmp

       j2k_to_image -h Print help message and exit

       See JPWL OPTIONS for special options


OPTIONS

       -i name
              (jpeg2000 input file name)

       -l n   n  is the maximum number of quality layers to decode. See LAYERS
              below)

       -o name
              (output file name with extension)

       -r n   (n is the highest resolution level to be discarded.  See  REDUC-
              TION below)

       -x name
              (use name as index file and fill it)

       -ImgDir directory_name
              (directory containing input files)

       -OutFor ext
              (extension for output files)



JPWL OPTIONS

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

       -W  c[=Nc]  (Nc is the number of expected components in the codestream;
       default:3)

       -W  t[=Nt]  (Nt  is  the  maximum  number  of  tiles in the codestream;
       default:8192)

       -W c[=Nc], t[=Nt] (same as above)



REDUCTION

       Set the number of highest resolution levels to be discarded.  The image
       resolution is effectively divided by 2 to the power of  the  number  of
       discarded  levels.  The  reduce factor is limited by the smallest total
       number of decomposition levels among tiles.


TILES

       Set the maximum number of quality layers to decode. If there  are  less
       quality  layers  than  the specified number, all the quality layers are
       decoded.



AUTHORS

       Copyright (c) 2002-2007, Communications and Remote Sensing  Laboratory,
       Universite catholique de Louvain (UCL), Belgium
       Copyright (c) 2002-2007, 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

       image_to_j2k(1) j2k_dump(1)



j2k_to_image                     Version 1.4.0                 j2k_to_image(1)

openjpeg15 1.5.1 - Generated Sun Oct 26 06:45:19 CDT 2014
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