Organisation internationale de normalisation

Coding block structures ([e-mail]) Study techniques of HM relating to coding block structure Characterize the trade-offs involved in coding block structure issues, including complexity, redundancy and compression performance aspects Identify opportunities for harmonization and simplification of coding block structure	K. Panusopone (chair), W.-J. Han, T. K. Tan, T. Wiegand (vice chairs)
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Reference pictures memory compression ([e-mail]) Study motion compensation memory access bandwidth of HM design Study clipping and rounding schemes of extended bit depth values for reference picture storage Study reference picture memory compression schemes in HM design Study data format alignment between reference picture memory compression and display processing Study the visual quality impact of reference picture memory compression Report on conclusions reached	K. Chono (chair), T. Chujoh, C. S. Lim, A. Tabatabai, M. Zhou (vice chairs)	N
Entropy coding ([e-mail]) Study the entropy coding complexity and compression characteristics of CABAC, LCEC, PIPE/V2V, and other entropy coding designs Consider the potential for harmonization of HE and LC entropy coding designs Characterize throughput, memory, silicon area, power requirements, etc. Study parallel context processing, syntax-element partitioning, and other parallelism approaches for entropy coding Consider IPCM coding and effect of the maximum number of potential coded bits for coded regions Study and develop approaches for hardware and software evaluation of entropy coding methods Identify and discuss additional issues on entropy coding	M. Budagavi (chair), G. Martin-Cocher, A. Segall (vice chairs)	N
Quantization ([e-mail]) Study quantization issues in HM design, including sub-LCU dQP, Quantization matrix, etc. Study trade offs and characteristics of quantization design, including coding efficiency and complexity Study the impact on subjective quality improvement and coordinate preparations for subjective viewing test at Geneva, if necessary Identify issues relating to tools tested only with RDOQ enabled. Study new quantization schemes such as adaptive quantization level (AQL) with RDOQ on and RDOQ off Study adequacy of current mapping of QP to quantizer step-size for rate control at different coding levels (LCU, slice, frame, etc.)	M. Budagavi (chair), K. Sato, G. Martin-Cocher (vice-chairs)	N