公开(公告)号：US10225573B1

公开(公告)日：2019-03-05

申请号：US15420564

申请日：2017-01-31

Applicant: GOOGLE INC.

Inventor： Debargha Mukherjee ,  James Bankoski ,  Yue Chen ,  Sarah Parker

IPC: H04N19/105 ,  H04N19/172 ,  H04N19/513 ,  H04N19/176 ,  H04N19/182

Abstract: A current block of a video frame can be encoded or decoded using parameterized motion models. First and second parameterized motion models are identified. The first parameterized motion model corresponds to a first motion model type, and the second parameterized motion model corresponds to a second motion model type. The first and second parameterized motion models are associated with one or more reference frames. One of the first or second parameterized motion models is selected along with an associated reference frame, such as based on a lowest prediction error. A motion vector is generated between the current block and the selected reference frame by warping pixels of the current block to a warped patch of the selected reference frame according to the selected parameterized motion model. A prediction block is generated using the motion vector, and the current block is encoded or decoded using the prediction block.