A Fast Intra-Frame Selection Method Based on Inseparable Quadratic Transform Mode
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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[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0042] Such as figure 1 As shown, it is a schematic flow chart of the present invention, a fast intra-frame selection method based on an inseparable quadratic transform mode
[0043] method, including the following steps:
[0044] Step 1: Use the quadtree division depth QTDepth and binary tree division depth BTDepth of the coding unit CU at the current depth to determine whether entry condition 1 is satisfied, and if not, proceed to step 2; otherwise, proceed to step 4;
[0045] Condition 1: QTDepth≧2&&BTDepth≧1
[0046] Satisfying condition 1 indicates that the depth of the current CU is relatively high, skip the NSST index cycle under the current depth, and directly enter step 4;
[0047] For CUs with a low depth, enter step 2, that is, perform a complete NSST index cycle at the current depth;
[0048] Step 2: Perform a complete inseparable second...
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