公开(公告)号：US10757438B2

公开(公告)日：2020-08-25

申请号：US15463387

申请日：2017-03-20

Applicant: Polycom, Inc.

Inventor： Sean Chen ,  David Wang

IPC: H04N19/513 ,  H04N19/533 ,  H04N19/523 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182

Abstract: A technique of motion estimation in video compression is described, the technique including: determining, in one or more reference frames of a video picture, the best full-pixel motion vector F for a block in a current frame of the video picture, wherein m and n are signed numbers and integer multiples of the distance between two adjacent full-pixels; selecting the best half-pixel motion vector candidates from a set of half-pixel motion vectors based on the best full-pixel motion vector; determining the best half-pixel motion vector H; selecting the best quarter-pixel motion vector candidates from a set of quarter-pixel motion vectors based on the best full-pixel motion vector and the best half-pixel motion vector; determining the best quarter-pixel motion vector Q; and determining the best motion vector for the block as BMV.

公开(公告)号：US20170195686A1

公开(公告)日：2017-07-06

申请号：US15463387

申请日：2017-03-20

Applicant: Polycom, Inc.

Inventor： Sean Chen ,  David Wang

IPC: H04N19/513 ,  H04N19/105

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/523 ,  H04N19/533

Abstract: A technique of motion estimation in video compression is described, the technique including: determining, in one or more reference frames of a video picture, the best full-pixel motion vector F for a block in a current frame of the video picture, wherein m and n are signed numbers and integer multiples of the distance between two adjacent full-pixels; selecting the best half-pixel motion vector candidates from a set of half-pixel motion vectors based on the best full-pixel motion vector; determining the best half-pixel motion vector H; selecting the best quarter-pixel motion vector candidates from a set of quarter-pixel motion vectors based on the best full-pixel motion vector and the best half-pixel motion vector; determining the best quarter-pixel motion vector Q; and determining the best motion vector for the block as BMV.

公开(公告)号：US09628793B1

公开(公告)日：2017-04-18

申请号：US14498010

申请日：2014-09-26

Applicant: Polycom, Inc.

Inventor： Sean Chen ,  David Wang

IPC: H04N19/63 ,  H04N19/523 ,  H04N19/583 ,  H04N19/51

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/523 ,  H04N19/533

Abstract: A technique of motion estimation in video compression is described, the technique including: determining, in one or more reference frames of a video picture, the best full-pixel motion vector F for a block in a current frame of the video picture, wherein m and n are signed numbers and integer multiples of the distance between two adjacent full-pixels; selecting the best half-pixel motion vector candidates from a set of half-pixel motion vectors based on the best full-pixel motion vector; determining the best half-pixel motion vector H; selecting the best quarter-pixel motion vector candidates from a set of quarter-pixel motion vectors based on the best full-pixel motion vector and the best half-pixel motion vector; determining the best quarter-pixel motion vector Q; and determining the best motion vector for the block as BMV.