By Guilherme Corrêa, Pedro Assunção, Luciano Agostini, Luis A. da Silva Cruz
This publication discusses computational complexity of excessive potency Video Coding (HEVC) encoders with insurance extending from the research of HEVC compression potency and computational complexity to the relief and scaling of its encoding complexity. After an creation to the subject and a evaluation of the cutting-edge learn within the box, the authors offer a close research of the HEVC encoding instruments compression potency and computational complexity. Readers will make the most of a suite of algorithms for scaling the computational complexity of HEVC encoders, all of which make the most from the flexibleness of the body partitioning buildings allowed by means of the traditional. The authors additionally offer a suite of early termination tools in keeping with info mining and computing device studying thoughts, that are in a position to decrease the computational complexity required to discover the simplest body partitioning buildings. The applicability of the proposed equipment is ultimately exemplified with an encoding time regulate method that employs the simplest complexity aid and scaling tools offered through the booklet. The tools awarded during this publication are in particular worthy in power-constrained, transportable multimedia units to minimize power intake and to increase battery existence. they could even be utilized to transportable and non-portable multimedia units working in genuine time with restricted computational resources.
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Additional resources for Complexity-Aware High Efficiency Video Coding
Temporal or inter-frame redundancy arises due to similarities between temporally adjacent frames. g. sky or wall). g. a bird). Efficient techniques for reducing inter-frame redundancy yield high levels of compression and for this reason all current video coding standards exploit such techniques . Entropic redundancy is related to the occurrence frequency of the encoded symbols in a video. The higher the probability of a symbol occurring, the lower is the amount of information associated to it.
5 Video sequence divided into a number of GOPs I B1 B2 B3 2 Video Coding Background 18 Slice 1 Slice 2 Fig. In I slices, all CUs are encoded using only the intra-frame prediction. e. unidirectional prediction). e. bidirectional prediction). 2. 6. Considering the 4:2:0 subsampling configuration, each CTU is composed of one luminance coding tree block (CTB) of size W × W and two chrominance CTBs of size (W/2) × (W/2), where W may be equal to 8, 16, 32 or 64. The luminance CTB and the two chrominance CTBs form the CTU, which is considered the basic processing unit of HEVC.
This analysis allowed concluding that the nature of such structures leads to nested encoding loops, such that CBs at large tree depths are encoded inside CBs at smaller tree depths, significantly increasing the encoding computational complexity. Detailed experiments and results of this analysis are also presented in Chap. 4. E. 264/AVC and MPEG-4 Video Compression – Video Coding for Next- Generation Multimedia (John Wiley and Sons, Chichester, 2003) 3. Sun, Image and Video Compression for Multimedia Engineering: Fundamentals, Algorithms and Standards (CRC Press, Boca Raton, 1999) 5.