Advanced Video Coding Systems by Wen Gao, Siwei Ma PDF

By Wen Gao, Siwei Ma

ISBN-10: 3319142429

ISBN-13: 9783319142425

This ebook provides an summary of the cutting-edge in video coding know-how. particularly, it introduces the instruments of the AVS2 average, describing how AVS2 may help to accomplish an important development in coding potency for destiny video networks and functions via incorporating smarter coding instruments akin to scene video coding. good points: introduces the elemental innovations in video coding, and offers a quick heritage of video coding expertise and criteria; stories the coding framework, major coding instruments, and syntax constitution of AVS2; describes the foremost applied sciences utilized in the AVS2 usual, 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 evaluate of picture, video, and 3D content material caliber review algorithms; surveys the recent learn issues in video compression.

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The modified algorithm, named LOCO-I algorithm (Weinberger et al. 2000), has been adopted in JPEC-LS image compression standard. Afterwards, the AC/DC intra prediction in transform domain (Grgi´c et al. 1997) and the directional intra prediction in spatial domain (Bjontegaard 1998) have been proposed, and the latter becomes the prevalent prediction method in video coding field. 265 and AVS. Later, the unit of prediction is extended from pixel to picture. In Seyler (1962), a picture-based difference coding method was proposed, where only the difference between two pictures is transmitted, and the data redundancy was reduced significantly.

Compared to the original signal, the residual signal has lower correlation. Prediction coding is an efficient tool to reduce the spatial, temporal, and set redundancy existing within or among the video signal(s), and many prediction coding tools have been proposed. The earliest using of prediction coding is pixel-based DPCM (differential pulse coding modulation) coding, where the difference between neighboring two pixels are quantized and transmitted (Cutler 1950). For video prediction, Harrison (1952) proposed the first representative intra-prediction method, which takes the linear combination of reconstructed pixels as the prediction of the current pixel.

After transform coding was invented, considering the coefficients distribution, Tescher and Cox (1976) proposed the famous zig-zag scan which transforms the two dimensional DCT coefficients into one dimensional array. 263 also adds optional advanced intra coding mode and alternative inter VLC mode to gain some adaptation. 264, a context-based adaptive variable length coding (CAVLC) (Bjontegaard 2002; Au 2002) designed for 4 × 4 DCT is adopted, which obtains higher coding efficiency further by using multiple contexts, each associated with a VLC table, to adapt to local statistical variations of DCT coefficients.

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Advanced Video Coding Systems by Wen Gao, Siwei Ma


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