Multiple quadratic transformation matrices for video processing

摘要

A video processing method, comprising: performing a transform between a current video block of a video and a coded representation of the current video block, wherein the coded representation has a syntax element corresponding to auxiliary information of a secondary transform tool for the current video block Complying with format rules specifying what is signaled in the coded representation before transform-related information, the quadratic transform tool applies, during encoding, a forward quadratic transform to the output of a forward primary transform applied to the residual of a video block before quantization; or during decoding, applying an inverse quadratic transform to the output of the inverse quantization of the video block before applying the inverse linear transform.