High-Throughput JPEG 2000 (HTJ2K)

Crossing Mississippi River, Huey P. Long Bridge, New Orleans; Credit: Ken Lund.

Summary

HTJ2K speeds-up JPEG 2000 by an order of magnitude at the expense of slightly reduced coding efficiency. HTJ2K retains JPEG 2000's advanced features, with reduced quality scalability, while being faster and much more efficient than traditional JPEG. This is achieved by replacing the Part 1 block coder with an innovative block coder for today's vectorized computing architectures. This also allows mathematically lossless transcoding to/from legacy JPEG 2000. Part 15 is intended to be royalty-free.

• A JPEG white paper on HTJ2K is available here.
• An open source implementation is available here.