| CPC H04N 19/124 (2014.11) [H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/44 (2014.11); H04N 19/91 (2014.11)] | 19 Claims |
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1. A video decoding method, performed by a computing device, the method comprising:
performing entropy decoding on a coding block of a video image frame to obtain a quantization coefficient block of residual data corresponding to the coding block;
inversely quantizing the quantization coefficient block to obtain an inverse quantization coefficient matrix;
counting quantization coefficients in the quantization coefficient block to obtain an implicitly derived index value;
determining whether to skip inverse transform processing of the coding block and whether to inversely rearrange the inverse quantization coefficient matrix according to the implicitly derived index value and a value of an explicit index identifier contained in the coding block;
in response to determining that the inverse quantization coefficient matrix is to be inversely rearranged, inversely rearranging the inverse quantization coefficient matrix to obtain a processed coefficient matrix, non-zero coefficients in the processed coefficient matrix being concentrated in left, upper and upper left regions of the coefficient matrix; and
generating the residual data according to the processed coefficient matrix.
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