Of itu-t sg16 wp3 and iso/iec jtc1/SC29/WG11

6.1.8Precision analysis for high bit depth (2)

(Reviewed Thu 24th evening GJS)

JCTVC-O0068 AHG5 and AHG18: Transform Matrix Precision for High Bit Depths [K. Sharman, N. Saunders, J. Gamei (Sony)]

(Information contribution.)

This contribution examines a number of options regarding the precision of the transform matrices when used for coding high-bit-depth video. The recommended option is to use a 14-bit set of forward transform matrices together with the pre-existing 6-bit inverse transform matrices. It is stated that, this being an encoder-only option, no normative change is required.