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WIP DO NOT MERGE
This patch fulfills my action item from the September 19 TSC meeting.
Introduction
This patch proposes to add support for High-Throughput JPEG 2000 (HTJ2K) compression to OpenEXR -- HTJ2K is JPEG 2000 with the HT block coder standardized in Rec. ITU-T T.814 | ISO/IEC 15444-15. As detailed at Evaluating HTJ2K as a compressor option for OpenEXR, HTJ2K demonstrates significant improvements in both speed and file size over other OpenEXR compressors. Furthermore, HTJ2K is a worldwide standard that benefits from a diversity of implementations, builds on JPEG 2000, which is in broad use in studio workflows, is appropriate for long-term preservation, has both lossy and lossless modes and supports integer and floating point samples. Finally, the unique features of HTJ2K could be powerful additions to high-performance OpenEXR workflows where the full image may not always be viewed at its full resolution.
The patch currently defines four compressors:
Questions
Notes
Todo