Method for 4*4 sub-macroblock parallel intraframe prediction in H.264/AVC
An intra-frame prediction and sub-macroblock technology, which is applied in the field of video coding and general-purpose computing of graphics cards, can solve problems such as incompatibility with CUDA, insufficient utilization of GPU performance, and multi-threaded parallel processing of pixels, etc., to eliminate a large number of branch statements, Short encoding time, the effect of shortening encoding time
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[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0057] The overall idea of the present invention is to unify the prediction formulas of various modes in the intra-frame prediction according to the CUDA execution model and the characteristics in the 4x4 sub-macroblock intra-frame prediction, realize pixel-level parallelism, and make it possible to use GPU more effectively. Many-core advantage.
[0058] Such as Figure 4 As shown, the paral...
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