A method for intra-frame fast selection of inseparable quadratic transform modes based on mode-dependent properties
A secondary conversion and fast selection technology, applied in the field of video coding and decoding, can solve the problems of low coding efficiency and achieve the effects of improving coding efficiency, simple scheme, and reducing computational complexity
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[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0029] Such as figure 1 As shown, a fast intra-frame selection method based on the inseparable quadratic transformation mode, including the following steps:
[0030] Step 1: Determine whether the current unit CU to be encoded is located at the start position or edge position of the entire encoding area, if so, proceed to step 2, if not, proceed to step 3;
[0031] Determined by the coding order of the encoder, the adjacent units of these four positions have been encoded before the current CU to be encoded, the reference information is complete, and because the correlation between the adjacent positions of the encoded image is strong, experiments show that using these encoding The information of the block is used as the reference of the current CU to be encoded, and the average correlation is as high as more than 90%.
[0032] Step 2: Perform complete en...
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