公开(公告)号：US10123018B2

公开(公告)日：2018-11-06

申请号：US15270135

申请日：2016-09-20

申请人： Dolby Laboratories Licensing Corporation

发明人： Sankaranarayanan Piramanayagam ,  Hsuan-Ting Chou ,  Guan-Ming Su

IPC分类号： H04N19/136 ,  H04N19/146 ,  H04N19/34 ,  H04N19/179 ,  H04N19/30 ,  H04N19/115 ,  H04N19/186 ,  H04N19/154 ,  H04N19/187

摘要： Novel methods and systems for non-backward compatible video encoding are disclosed. The bitrates of the base layer and enhancement layer are dynamically assigned based on features found in scenes in the video compared to a machine learned quality classifier.

公开(公告)号：US10244244B2

公开(公告)日：2019-03-26

申请号：US15795093

申请日：2017-10-26

申请人： Dolby Laboratories Licensing Corporation

发明人： Sankaranarayanan Piramanayagam ,  Qing Song ,  Guan-Ming Su

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/186 ,  G06T5/00 ,  H04N19/68 ,  H04N19/182 ,  H04N19/587 ,  H04N19/98 ,  G06T7/00 ,  G06T9/00 ,  G09G5/00

摘要： Methods for screen-adaptive decoding of video with high dynamic range (HDR) are described. The methods combine the traditional compositing and display management steps into one screen-adaptive compositing step. Given decoded standard dynamic range (SDR) input data, metadata related to the prediction of output HDR data in a reference dynamic range, and the dynamic range of a target display, new output luma and chroma prediction functions are generated that map directly the input SDR data to output HDR data in the target dynamic range, thus eliminating the display management step.