By Wen Gao, Siwei Ma
This e-book offers an summary of the state-of-the-art in video coding expertise. particularly, it introduces the instruments of the AVS2 regular, describing how AVS2 may help to accomplish an important development in coding potency for destiny video networks and purposes by means of incorporating smarter coding instruments corresponding to scene video coding. positive aspects: introduces the fundamental thoughts in video coding, and provides a brief background of video coding expertise and criteria; studies the coding framework, major coding instruments, and syntax constitution of AVS2; describes the most important applied sciences utilized in the AVS2 average, together with prediction coding, remodel coding, entropy coding, and loop-filters; examines effective instruments for scene video coding and surveillance video, and the main points of a promising clever video coding procedure; discusses optimization applied sciences in video coding structures; offers a evaluation of picture, video, and 3D content material caliber evaluation algorithms; surveys the recent study themes in video compression.
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Additional info for Advanced Video Coding Systems
Intra decoded output background picture (G-picture): only intra prediction is used in the picture, and it can be used as a long-term reference. • Intra decoded non-output background picture (GB-picture): similar to G picture, but it is only used as a long-term reference and not output for display. • Background predictive forward inter decoded picture (S-picture): a picture using forward prediction from a G picture. In the sequence, the first picture after a sequence header should be I-picture, and the first P-picture after a sequence header should use pictures after the sequence header for forward prediction.
Pictures of ‘4P’ and ‘1I’ are both used by pictures of ‘2B’ and ‘3B’ for predictions. Therefore the decoding order of pictures is ‘1I’, ‘4P’, ‘2B’, ‘3B’, and the display order is ‘1I’, ‘2B’, ‘3B’, ‘4P’. Input order at the encoder: 1I 2B 3B 4P 5B 6B 7P 8B 9B 10I 11B 12B 13P Decoding order: 1I 4P 2B 3B 7P 5B 6B 10I 8B 9B 13P 11B 12B Output order at the decoder (display order): 1I 2B 3B 4P 5B 6B 7P 8B 9B 10I 11B 12B 13P The example for sequence coded with I, P, B, G, and S pictures is as follows. There are two B-pictures between successive output G-picture and S or P pictures, and also two B-pictures between successive S or P pictures.
2 Video Formats 27 would be inescapable. In the industry, HDMI (High-Definition Multimedia Interface) has defined 30, 36, and up to 48-bit color for more vivid color display. 3 Video Coding Tools As referred in Sect. 1, after digitalization, the data size of digital video increases significantly. However, there are a lot of redundancies in the digitalized video signal. In detail, there exists great correlation among the spatial neighboring pixels and the temporal successive frames. These redundancies can be categorized into spatial redundancy, temporal redundancy, statistical redundancy, and set redundancy.