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Video coding standards: AVS China, H.264/MPEG-4 PART 10, HEVC (high efficiency video coding a.k.a. H.265), VP9 (Google), DIRAC (BBC) and VC-1 (SMPTE) are presented. HEVC is the latest standard developed by ITUT and ISO/IEC. Encoder/decoder functionalities along with advantages/applications are discussed. Open source software, ftp/web sites, standards documents, review papers, conformance bit streams,...
It is shown that the complete set of circular shift invariants called the Q-spectrum, of the Walsh-Hadamard transform (WHT) of a periodic sequence is related to the cyclic autocorrelation of the given sequence through the Hadamard matrices. It is also shown that the modified WHT (MWHT) of the cyclic autocorrelation yields the Q-spectrum within some scale factors. This is analogous to the discrete...
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