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

JCTVC-J0135 Cross-verification of Simplification of coefficient scanning order (JCTVC-J0105) by BBC [M. Mrak, M. Naccari (BBC)]
JCTVC-J0150 Removal of zigzag scan from scaling list coding [M. Shima (Canon)]

This contribution reports the effects of replacing zigzag scan used for scaling list coding with existing up-right diagonal scan. In regards of scaling list coding performance, using the test matrices used in past CE4, the simulation results show that replacing zigzag scan with up-right diagonal scan will lead to about 0.6% scaling list coding bit reduction on average. For other aspects, it is reported that the proposed changes will remove one section of HEVC draft text defining zigzag scan (about half a page) and about 50 lines of code from HM 7.0 software.

Several experts support this.

HEVC would now be different from other standards by not having zigzag scan.

Decision: Adopt