公开(公告)号：US20180295380A1

公开(公告)日：2018-10-11

申请号：US15832959

申请日：2017-12-06

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Chia-yun Cheng ,  Yung-Chang Chang

IPC: H04N19/513 ,  H04N19/55

CPC classification number: H04N19/521 ,  H04N19/52 ,  H04N19/55 ,  H04N19/573

Abstract: A method and apparatus for video encoding or decoding used by an AVS2 (Second Generation of Audio Video Coding Standard) video encoder or decoder respectively are disclosed. According to this method, first motion vectors associated with spatial neighboring blocks of a current block are determined. For each spatial neighboring block, a value of 1 is assigned to a first BlockDistance associated with the spatial neighboring block if a corresponding first reference picture is a G picture or GB picture. Motion vector predictor candidates are derived from the first motion vectors by scaling each first motion vector according to a corresponding first BlockDistance and a current BlockDistance. A final motion vector predictor is determined among the motion vector predictor candidates. The current motion vector is encoded or decoded using the final motion vector predictor

公开(公告)号：US10805611B2

公开(公告)日：2020-10-13

申请号：US15782886

申请日：2017-10-13

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Hsiu-Yi Lin ,  Chia-yun Cheng ,  Chih-Ming Wang ,  Yung-Chang Chang

IPC: H04N19/159 ,  H04N19/577 ,  H04N19/70 ,  H04N19/172 ,  H04N19/105 ,  H04N19/52

Abstract: A method and apparatus for video encoding or decoding used by a video encoder or decoder respectively. In one method, input data associated with a video sequence are received. A current sequence header for a current picture is determined. Whether the current sequence header corresponds to a first sequence header or a second sequence header is determined. If the current sequence header corresponds to the second sequence header, one or more syntax values of a syntax set associated with the first sequence header are assigned to corresponding one or more syntax values of the syntax set associated with the current sequence header. The current picture is then encoded or decoded according to the current sequence header.

公开(公告)号：US10298951B2

公开(公告)日：2019-05-21

申请号：US15832959

申请日：2017-12-06

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Chia-yun Cheng ,  Yung-Chang Chang

IPC: H04N19/513 ,  H04N19/55 ,  H04N19/52 ,  H04N19/573

Abstract: A method and apparatus for video encoding or decoding used by an AVS2 (Second Generation of Audio Video Coding Standard) video encoder or decoder respectively are disclosed. According to this method, first motion vectors associated with spatial neighboring blocks of a current block are determined. For each spatial neighboring block, a value of 1 is assigned to a first BlockDistance associated with the spatial neighboring block if a corresponding first reference picture is a G picture or GB picture. Motion vector predictor candidates are derived from the first motion vectors by scaling each first motion vector according to a corresponding first BlockDistance and a current BlockDistance. A final motion vector predictor is determined among the motion vector predictor candidates. The current motion vector is encoded or decoded using the final motion vector predictor