Macro-block partition mode selection method in movement search
A technology of motion search and macroblock division, which is applied in the field of video coding, can solve problems affecting the speed of video coding, reduce the number of motion searches and improve the speed of the algorithm
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[0026] Take the method of 16×16 macroblock division mode selection as an example, first select 16×16 macroblock division mode, and then select 8×8 macroblock division mode, the final macroblock division mode is determined according to different division The matching error function in the mode is determined.
[0027] The specific implementation steps of the present invention are as follows:
[0028] I. Select the division mode of 16×16 macroblocks, and the SAD value of each division block is shown in Figure 3:
[0029] 1) Use 16×16 mode (first mode) for motion search;
[0030] 2) According to the motion search, the residual matrix and the motion vector corresponding to the 16×16 block are obtained, and the SAD values of the 4 8×8 blocks (the fourth mode block) are calculated; the SAD values of the 4 8×8 blocks are respectively SAD41, SAD42, SAD43 and SAD44, their size relationship is SAD41>SAD42>SAD43>SAD44;
[0031]3) Find the block with the largest SAD value (SAD41) among the...
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