openjph

Open-source JPEG2000 Part-15 (HTJ2K) encoder and decoder

brewmacoslinux

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Open-source implementation of JPEG2000 Part-15 (or JPH or HTJ2K)

opj_compressopj_decompressopj_dump

Encode a PNG image to JPEG2000 format$ opj_compress -i input.png -o output.jp2

Decode a JPEG2000 file to PNG$ opj_decompress -i input.jp2 -o output.png

Display information about a JPEG2000 file$ opj_dump -i input.jp2