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    IMAGE ENCODING AND DECODING METHOD, ENCODING AND DECODING DEVICE, ENCODER AND DECODER
    88.
    发明公开
    IMAGE ENCODING AND DECODING METHOD, ENCODING AND DECODING DEVICE, ENCODER AND DECODER 审中-公开

    公开(公告)号：EP3962085A3

    公开(公告)日：2022-05-25

    申请号：EP21203872.3

    申请日：2016-11-15

    申请人： ZTE Corporation

    发明人： LI, Ming ,  WU, Ping ,  WU, Zhao ,  SHANG, Guoqiang

    IPC分类号： H04N19/44 ,  H04N19/30 ,  H04N19/98 ,  H04N19/70

    摘要： The present disclosure provides picture encoding and decoding methods, picture encoding and decoding devices as well as a decoder and an encoder. The picture decoding method includes: parsing a video bitstream to obtain a reshaping parameter from a picture-layer and/or slice-layer data unit of the video bitstream, and determining a reshaping parameter used for reshaping a reconstructed picture according to the obtained reshaping parameter; and reshaping the reconstructed picture by using the reshaping parameter used for reshaping the reconstructed picture. The reconstructed picture is a picture obtained by decoding the video bitstream before performing the reshaping. The picture-layer and/or slice-layer data unit includes at least one of the following data units: a picture-layer parameter set and/or a slice-layer parameter set different from a picture parameter set (PPS), a parameter data unit which are included in an access unit (AU) corresponding to the reconstructed picture, slice header and a system-layer picture parameter data unit. With the present invention, the problems of poor viewing quality of a video and high encoding overhead of the reshaping parameter in the related art are solved.