The Joint Collaborative Team on Video Coding (jct-vc) of itu-t wp3/16 and iso/iec jtc 1/ sc 29/ wg 11 held its tenth meeting during 11-20 July 2012 at the City Conference Centre (ccc), a k. a

5.15.7CBF

JCTVC-J0161 Removal of the inference of luma CBF at the transform depth level zero in inter CU [J. Kim, B. Jeon (LGE)]

This contribution proposes a method to remove the inference of luma CBF when both chroma CBFs are zero and the transform depth level is zero in inter predicted CUs. It simplifies the CBF coding and decoding with BD-rate change of 0.0%, 0.1%, 0.1% and 0.1%, 0.1%, 0.1% for RAMAIN and RAHE10 respectively. It also shows 0.1%, 0.3%, 0.3% and 0.1%, 0.4%, 0.4% BD-rate change for LBMAIN and LBHE10.

This is a follow-up of contribution I0152 (from same company) which was adopted in the 9^th meeting. Even though it was claimed by that time that all inference dependency on luma CBF was removed, this was in fact not the case.

The previous contribution resulted in 0.1% BD rate increase as well, such that the overall loss of all the dependency removals now goes up to approx. 0.2%.

No action taken on this.