By Byung-Gyu Kim, Kalyan Goswami
This booklet discusses intimately the elemental algorithms of video compression which are standard in sleek video codec. The authors dissect complex necessities and current fabric in a manner that will get readers fast on top of things by means of describing video compression algorithms succinctly, with out going to the mathematical information and technical necessities. For speeded up studying, hybrid codec constitution, inter- and intra- prediction options in MPEG-4, H.264/AVC, and HEVC are mentioned jointly. furthermore, the newest learn within the quick encoder layout for the HEVC and H.264/AVC can be included.
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Additional resources for Basic Prediction Techniques in Modern Video Coding Standards
22 2 Hybrid Video Codec Structure s kip m o de 2N*2N intr a m o de 2N*2N N*N i n t e r m o d e ( s q u ar e an d r e c t an g u l ar ) - n o n AM P 2N*2N N*N 2N*N N*2N nL * 2 N nR * 2 N i n t e r m o d e ( as y m m e t r i c ) - AM P 2 N * nU 2 N * nD Fig. 9 PU partition types in HEVC for intra- and inter-modes vectors (MVs) are calculated separately for each inter-PB using two reference pictures from list-0 and list-1. For each MV, RD cost is calculated using the original and generated predicted blocks.
Hence, in order to detect the skip mode before the RD cost calculation process, it should be beneficial to identify the stationary regions from a video sequence. We have analyzed the amount of the skip modes in different benchmark video sequences. 2, the percentage of CUs which are finally encoded as skip mode by the HEVC encoder for 6 different sequences are shown. In this table the benchmark sequences with different resolutions and motion activities are considered. For an example, the Traffic and the Park Scene sequences have relatively high motionless backgrounds.
The difference in position between a candidate block and its closest match in a reference frame is called the motion vector. After determining the motion vectors, one can predict the current frame using the reference frame. Motion estimation is one of the most important operations involved in any video processing system. The ultimate goal is to minimize the total number of bits used for coding the motion vectors and the prediction errors. According to the occurrence of the current and reference frame, motion estimation can be divided into two categories—forward and backward motion estimation, as shown in Fig.
Basic Prediction Techniques in Modern Video Coding Standards by Byung-Gyu Kim, Kalyan Goswami