This is the command j2k_to_image that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
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 .
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
(jpeg2000 input file name)
-l n n is the maximum number of quality layers to decode. See LAYERS below)
(output file name with extension)
-r n (n is the highest resolution level to be discarded. See REDUCTION below)
(use name as index file and fill it)
(directory containing input files)
(extension for output files)
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)
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.
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.
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
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