By Byung-Gyu Kim, Kalyan Goswami
This booklet discusses intimately the fundamental algorithms of video compression which are universal in glossy video codec. The authors dissect complex requirements and current fabric in a manner that will get readers speedy in control by way of describing video compression algorithms succinctly, with out going to the mathematical information and technical requirements. For sped up studying, hybrid codec constitution, inter- and intra- prediction recommendations in MPEG-4, H.264/AVC, and HEVC are mentioned jointly. moreover, the newest study within the quickly encoder layout for the HEVC and H.264/AVC can be included.
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Extra info for Basic Prediction Techniques in Modern Video Coding Standards
The 33 angular modes are generally referred to as Intra_AngularŒk, where k is a mode number from 2 to 34. The angles are internally designed to provide denser coverage for near-horizontal and near-vertical angles and course coverage for near-diagonal angles for the effectiveness of the signal prediction processing . Generally, the Intra_Angular prediction targets the regions which have strong directional edges. 36 3 Intra-prediction Techniques In the Intra_AngularŒk, the k ranges from 2 to 17 referrers the prediction of horizontal modes where the samples located in the above row are projected as additional samples located in the left column.
For each MV, RD cost is calculated using original and the generated predicted blocks. 1. In this table, we are only considering the inter-mode prediction and also the merge/skip prediction. 1, 1864 RD cost calculations are required for a 64 64 CU size, to predict its correct inter-mode. In this table, we do not consider the RD cost of intra-mode. 264. Whenever a CB is considered to be encoded as merge mode, then its motion information are derived from spatially or temporally neighboring blocks.
In these plots, two different configurations (in terms of QP) are shown. QP refers to the quantization parameter. Generally, low QP means high-quality encoded data. Now for both of these cases, the inter-prediction takes over 40 % encoding time. Again the second position is for the inter-prediction. 46 4 Inter-prediction Techniques From this analysis, it is quite clear that the prediction modes are the most important parts in the video codec. If it is analyzed more deeply, then the interprediction takes higher encoding time than the intra.