公开(公告)号：US20220337820A1

公开(公告)日：2022-10-20

申请号：US17855220

申请日：2022-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Junkai FENG ,  Bo QU ,  Liping WANG

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/182 ,  H04N19/176

Abstract: This application relates to the image processing field, and provides an encoding method and an encoder. The method includes: determining an encoding quantization parameter QP; precoding a to-be-encoded block by using the encoding QP to obtain encoding result information; adjusting the encoding QP based on the encoding result information; and performing real encoding on the to-be-encoded block by using an adjusted encoding QP. This can improve image compression performance.

公开(公告)号：US20220329818A1

公开(公告)日：2022-10-13

申请号：US17853714

申请日：2022-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Junkai FENG ,  Bo QU ,  Liping WANG

IPC: H04N19/132 ,  H04N19/146 ,  H04N19/103 ,  H04N19/176

Abstract: This application relates to the image processing field, and provides an encoding method and an encoder. The method includes: when a forcible bit rate control condition is satisfied, performing bit truncation of a spatial-domain branch and coefficient discarding of a frequency domain branch on a to-be-encoded block at the same time, calculating cost values respectively corresponding to the bit truncation and the coefficient discarding, and determining a final encoded bit based on the two cost values, so as to improve image decoding quality as much as possible while preventing bitstream buffer overflow.