JPEG XS screen content coding extensions

At its 94th meeting, SC29WG1 (JPEG) decided to create a third edition of the JPEG XS standard (ISO/IEC 21122) for lightweight, low-latency image coding. While existing coding tools already support the compression of natural content and CFA Bayer pattern data well, this third edition has a strong focus on extending the previous edition with coding tools to improve the performance on screen content data. In this work, some of the candidate tools that have been proposed for the third edition are described, and their performance is reported.