Patent ID: 9538197
Date: 2017-01-03
CPC Classifications: H04N

Claim:
1. A machine-implemented method to estimate motion at a video decoder, comprising: defining, at the decoder, a motion estimation search window for a first coding block of a first frame of a video; selecting, at the decoder, a motion vector to a block of a second frame of the video and a motion vector to a block of a third frame of the video based on the search window, distances between the first frame and each of the second and third frames, and a measure of visual similarity between the respective blocks of the second and third frames; deriving, at the decoder, a motion vector for the first block based on the selected motion vector to a block of the second frame and the selected motion vector to a block of the third frame; storing the motion vector for the first block to a memory coupled with, or included in, the video decoder; and predicting the first block based on the stored motion vector and the block of the second or third frame.