Oblon, McClelland, Maier & Neustadt, L.L.P.
Method and apparatus for video coding
Aspects of the disclosure provide methods and an apparatus for video encoding/decoding. The apparatus includes processing circuitry that decodes coded information of a coding unit (CU) from a coded video bitstream. The coded information indicates a last position of non-zero transform coefficients of a first coding block (CB) of the CU. The processing circuitry determines whether a secondary transform index is signaled in the coded information based on the last position and whether to perform a secondary transform on a second CB based on whether the secondary transform index is determined to be signaled in the coded information. When the secondary transform is determined to be performed, the processing circuitry performs the secondary transform on the second CB and reconstructs the second CB. Responsive to the secondary transform being determined not to be performed, the processing circuitry reconstructs the second CB without performing the secondary transform on the second CB.
Tencent America LLC
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Shan Xiang Xin
Liu Li Zhao