公开(公告)号：US20240137523A1

公开(公告)日：2024-04-25

申请号：US18398251

申请日：2023-12-28

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Ce ZHU ,  Xu YANG ,  Hongwei GUO ,  Lei LUO ,  Linbo QING ,  Jingjing HOU ,  Jin DU

IPC: H04N19/147 ,  H04N19/149 ,  H04N19/169 ,  H04N19/172 ,  H04N19/597

CPC classification number: H04N19/147 ,  H04N19/149 ,  H04N19/172 ,  H04N19/1883 ,  H04N19/597

Abstract: A low-complexity panoramic video coding method considering distortion temporal propagation is provided. By analyzing the inter-frame reference relationships under the random access coding structure and establishing the corresponding distortion propagation chain, the method utilizes distortion impact factors of coding units to adjust encoding parameters, thereby optimizing the encoding process. Furthermore, the method addresses the issue of oversampling arising from the varying geometric deformations in different latitude regions during the projection of spherical images in panoramic videos. This is achieved by adjusting coding parameters based on the ratio of area changes at different latitudes. The proposed approach significantly enhances coding performance.