公开(公告)号：US20180270497A1

公开(公告)日：2018-09-20

申请号：US15838748

申请日：2017-12-12

Applicant: GOOGLE LLC

Inventor： Debargha Mukherjee ,  Yuxin Liu ,  Sarah Parker

IPC: H04N19/517 ,  H04N19/513 ,  H04N19/80 ,  H04N19/557

CPC classification number: H04N19/517 ,  H04N19/17 ,  H04N19/20 ,  H04N19/521 ,  H04N19/54 ,  H04N19/543 ,  H04N19/547 ,  H04N19/557 ,  H04N19/80

Abstract: Encoding and decoding using parametrized motion models are disclosed. A method includes segmenting the video frame with respect to a reference frame resulting in a segmentation, determining a first motion vector for the current block based on the segmentation, determining a second motion vector for the current block using translational motion compensation, and encoding, for the current block, the one of the first motion vector and the second motion vector corresponding to a smaller error. The segmentation includes a segment containing the current block and a parameterized motion model for the segment. Another method includes identifying a parameterized motion model corresponding to a motion model type, associating the parameterized motion model with a segment of a reference frame, and, in response to determining that the current block is encoded using the parameterized motion model, decoding the current block using the parameterized motion model.