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 REDUCTION
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)
