公开(公告)号：US11102488B2

公开(公告)日：2021-08-24

申请号：US16427482

申请日：2019-05-31

Applicant: ATI TECHNOLOGIES ULC

Inventor： Boris Ivanovic ,  Mehdi Saeedi ,  Edward G. Callway

IPC: H04N11/02 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/33

Abstract: A processing system analyzes pixel activity levels of blocks of a picture at a plurality of spatial scales and/or dynamic ranges to generate a multi-scale metric that indicates how bit allocation or assignment of a given quantization parameter (QP) will affect the perceptual quality of the block. Blocks that have similar multi-scale metrics are likely to be visually similar and to benefit from similar bit allocations or QPs. Based on the multi-scale metric, an encoder encodes each block of the picture with a QP and/or a number of bits.