公开(公告)号：US20200329251A1

公开(公告)日：2020-10-15

申请号：US16913583

申请日：2020-06-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heechul YANG ,  Minsoo PARK

IPC: H04N19/44 ,  H04N19/124 ,  H04N19/96 ,  H04N19/46 ,  H04N19/176

Abstract: Provided is an image decoding method including determining a predicted quantization parameter of a current quantization group determined according to at least one of block split information and block size information, determining a difference quantization parameter of the current quantization group, determining a quantization parameter of the current quantization group, based on the predicted quantization parameter and the difference quantization parameter of the current quantization group, and inverse quantizing a current block included in the current quantization group, according to the quantization parameter of the current quantization group.