公开(公告)号：US20180199055A1

公开(公告)日：2018-07-12

申请号：US15865054

申请日：2018-01-08

Applicant: QUALCOMM Incorporated

Inventor： Yu-Chen Sun ,  Wei-Jung Chien ,  Li Zhang ,  Yi-Wen Chen ,  Nan Hu ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/91 ,  H04N19/44

Abstract: A video encoder is configured to determine whether to enable or disable an integer motion vector precision restriction and whether to enable or disable an illumination compensation (IC) tool by: for a large search range in a reference picture, performing first motion estimation tests, wherein performing the first motion estimation tests comprises performing motion estimation tests only with the IC tool disabled and the integer motion vector precision restriction disabled and with the IC tool enabled and the integer motion vector precision restriction disabled; based on the first motion estimation tests, determining a small search range, wherein the small search range is smaller than the large search range; for the small search range, performing second motion estimation tests; and based on the second motion estimation tests, determining whether to enable or disable the integer motion vector precision restriction and whether to enable or disable the IC tool.