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OpenJPEG

OpenJPEG is an open-source library to encode and decode JPEG 2000 images. As of version 2.1 released in April 2014, it is officially conformant with the JPEG 2000 Part-1 standard. It was subsequently adopted by ImageMagick instead of JasPer in 6.8.8-2 and approved as new reference software for this standard in July 2015.