公开(公告)号：US20250016340A1

公开(公告)日：2025-01-09

申请号：US18766519

申请日：2024-07-08

Applicant: GOOGLE LLC

Inventor： Yi-Chih Hsin ,  In Suk Chong

IPC: H04N19/43 ,  H04N19/127 ,  H04N19/167 ,  H04N19/176 ,  H04N19/513 ,  H04N19/56 ,  H04N19/573

Abstract: Various hardware arrangements for use with a hardware decoder are described to perform motion vector (MV) refinement. A buffer stores pixel values for a first prediction block identified by a first initial MV and pixels defined by a first search area and stores a second prediction block identified by a second initial MV and pixels defined by a second search area. The first and second initial MVs were used for inter prediction of a block of image data. Second hardware components determine, for multiple pixel locations defined by respective offsets, a respective difference value between the blocks shifted by the offsets. A third hardware component determines a minimum of the difference values to identify an offset MV for MV refinement, and a fourth hardware component outputs one or more refined values based on the offset MV to reconstruct a sub-block of the block.