公开(公告)号：US20180035116A1

公开(公告)日：2018-02-01

申请号：US15660737

申请日：2017-07-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shaolin Chen ,  Xiaohong Xiang ,  Dongsheng Wu

IPC: H04N19/147 ,  H04N19/176 ,  H04N19/119 ,  H04N19/196 ,  H04N19/14 ,  H04N19/124

CPC classification number: H04N19/147 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/60

Abstract: A data block encoding method and apparatus are provided. The data block encoding method includes: determining whether a data block includes an intensive edge region, where the intensive edge region is a region including an image distortion generated by ring noise, and the data block is a data block in a to-be-encoded image; and when the data block includes an intensive edge region, reducing a value of a quantization parameter used for encoding the data block, and encoding the data block by using a reduced value of the quantization parameter, or dividing the data block into multiple coding units of different sizes according to different coding layers, adjusting rate-distortion costs of the multiple coding units of different sizes, and encoding the data block by using a coding unit with a minimum rate-distortion cost obtained after the adjustment.

公开(公告)号：US11019343B2

公开(公告)日：2021-05-25

申请号：US15660737

申请日：2017-07-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shaolin Chen ,  Xiaohong Xiang ,  Dongsheng Wu

IPC: H04N19/147 ,  H04N19/119 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/18 ,  H04N19/122 ,  H04N19/60

Abstract: A data block encoding method and apparatus are provided. The data block encoding method includes: determining whether a data block includes an intensive edge region, where the intensive edge region is a region including an image distortion generated by ring noise, and the data block is a data block in a to-be-encoded image; and when the data block includes an intensive edge region, reducing a value of a quantization parameter used for encoding the data block, and encoding the data block by using a reduced value of the quantization parameter, or dividing the data block into multiple coding units of different sizes according to different coding layers, adjusting rate-distortion costs of the multiple coding units of different sizes, and encoding the data block by using a coding unit with a minimum rate-distortion cost obtained after the adjustment.