High-Throughput JPEG 2000 (HTJ2K)

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


The HTJ2K activity aims to develop an alternate block coding algorithm that can be used in place of the existing block coding algorithm specified in ISO/IEC 15444-1 (JPEG 2000 Part 1). The objective is a ten-fold increase in throughput at the expense of slightly reduced coding efficiency, while allowing mathematically lossless transcoding to/from existing codestreams and minimizing changes to codestream syntax and features. The output of HTJ2K activity is intended to be published as Part 15 of the JPEG 2000 family of specifications.


The JPEG Committee seeks technologies that fulfil the objectives of the HTJ2K activity, and plans to issue a Call for Proposals (CfP) following its 76th meeting (17-21 July 2017). A draft of the CfP is available here. Comments are welcome, and should be submitted no later than July 1, 2017 (see draft CfP for contact information).