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 second meeting during 21-28 July, 2010 at the itu-t premises in Geneva, ch

JCTVC-B085 [L. Guo, P. Yin, E. Francois (Technicolor)] TE3: Simplified geometry block partitioning

This contribution provides a simplification of Geometry Block Partitioning (GEO) scheme as described in JCTVC-A121. Specifically, "Most Valuable Partitions" are proposed to achieve the best tradeoff between the complexity and coding efficiency. Most Valuable Partitions are derived from a statistical analysis of the actual used GEO partitions. For defined test conditions in TE3, for IPPP coding case, the simplified GEO mode reportedly gives an average 3% bit rate saving, which is very close to the performance of the initial reference GEO mode version, with a reduced complexity.

Decoder and syntax were not modified – the simplification is just for encoding.

JCTVC-B096 [N. Sprljan, S. Paschalakis, P. Wu (Mitsubishi Elect.)] Local intensity compensation for inter prediction in HEVC

This contribution presents new results for the Macroblock Weighted Prediction (MBWP) method for improved video coding efficiency. The basic concept of the presented method is to derive weighted prediction parameters adaptively at the macroblock and the sub-macroblock partitions levels, as opposed to the AVC standard where the weighted prediction are derived and transmitted at the picture level. The test platform has been described in JCTVC-A107. In this contribution a comparison was presented with other similar tools presented during the first JCT-VC meeting in response to the CfP for HEVC.

The various tested methods had similar performance, roughly 1% benefit overall.