By Wen Gao, Siwei Ma
This ebook provides an summary of the state-of-the-art in video coding know-how. particularly, it introduces the instruments of the AVS2 ordinary, describing how AVS2 may also help to accomplish an important development in coding potency for destiny video networks and purposes by way of incorporating smarter coding instruments corresponding to scene video coding. gains: introduces the elemental thoughts in video coding, and provides a quick heritage of video coding know-how and criteria; reports the coding framework, major coding instruments, and syntax constitution of AVS2; describes the major applied sciences utilized in the AVS2 regular, 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; presents a evaluate of photograph, video, and 3D content material caliber review algorithms; surveys the recent study issues in video compression.
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Extra resources for Advanced Video Coding Systems
For an F frame, besides the conventional single hypothesis prediction mode in a P frame, multihypothesis techniques are added for more efficient prediction, including advanced skip/direct mode (Shao and Yu 2013), temporal multi-hypothesis prediction mode (Ling et al. 2013), and spatial directional multi-hypothesis (DMH) prediction mode (Kim et al. 2013). In an F frame, an advanced skip/direct mode is defined using a competitive motion derivation mechanism. Two derivation methods are used, one is temporal and the other is spatial.
Compared to the VLC code assigning at least one bit to a symbol, arithmetic coding can represent one symbol with less than one bit in average when the probability of the symbol is higher than 50 % by assigning a codeword to the input symbol sequences instead of each symbol. Although the concept of arithmetic coding has been proposed for a long time, the first practical entropy coding scheme is proposed by Rissanen and Langdon (1979) until 1979. And the first hybrid block-based video coding schemes that incorporate an adaptive binary arithmetic coder capable of adapting the model probabilities to the existing symbol statistics was presented in Gonzales (1989).
The second part gives a brief overview of the main coding tools. The third part introduces the syntax structure of AVS2, which would help the reader understand the AVS2 standard specification, and the last part concludes this chapter. 264 and AVS1 standards. The target applications of AVS2 include high quality broadcasting, low delay video communications, etc. , video surveillance, video conference, etc. In AVS2, a background picture model-based coding method was developed scene video coding, which will be detailed in Chap.