公开(公告)号：US20200084467A1

公开(公告)日：2020-03-12

申请号：US16125013

申请日：2018-09-07

Applicant: Apple Inc.

Inventor： Felix CHOU ,  Xiang FU ,  Linfeng GUO ,  Francesco IACOPINO ,  Qunxing YANG ,  Xiaohua YANG ,  Xu Gang ZHAO

IPC: H04N19/52 ,  H04N19/172 ,  H04N19/117 ,  H04N19/115 ,  H04N19/124 ,  H04N19/159

Abstract: Systems and methods are disclosed for improving the quality of a reconstructed video sequence that was captured under low light conditions by means of bitrate budget management. In response to a low illumination video capture detection, and based on estimation of the video image characteristics, frame bitrate budget and/or frame rate, used in motion compensated predictive coding techniques, are modified from their default values.

公开(公告)号：US20190246135A1

公开(公告)日：2019-08-08

申请号：US16222254

申请日：2018-12-17

Applicant: Apple Inc.

Inventor： Xiang FU ,  Xiaohua YANG ,  Linfeng GUO ,  Francesco IACOPINO ,  Felix CHOU ,  Ying Jian HE

IPC: H04N19/52 ,  H04N19/182 ,  H04N19/176 ,  H04N19/172

CPC classification number: H04N19/52 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182

Abstract: Techniques for encoding video with reduced frame-boundary artifacts are presented. The techniques include a video encoding method, where, when skip mode is selected as a motion prediction coding mode for a pixel block predicted from a reference block of a reference frame, estimating an amount of the reference block that extends beyond the edge of the reference frame. If the amount beyond the edge does not exceed a threshold, the prediction may be coded with skip mode. If the amount beyond the edge exceeds a threshold, the pixel block may be partitioned, and the partitioned blocks may be coded with motion prediction.