公开(公告)号：US09607364B2

公开(公告)日：2017-03-28

申请号：US15035477

申请日：2014-11-19

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ning Xu ,  Tao Chen ,  James E. Crenshaw ,  Timo Kunkel ,  Bongsun Lee

IPC: G06T5/00 ,  G06T5/40 ,  H04N1/60 ,  H04N1/407 ,  G06T7/90

CPC classification number: G06T5/007 ,  G06T5/40 ,  G06T7/90 ,  G06T2207/20016 ,  G06T2207/20028 ,  G06T2207/20208 ,  H04N1/4072 ,  H04N1/6027

Abstract: Novel methods and systems for inverse tone mapping are disclosed. A scene can be analyzed to obtain highlight detection from bright light sources and specular reflections. An inverse tone mapping curve can be calculated based on the lower dynamic range and higher dynamic range displays. Multi-scale filtering can be applied to reduce noise or artifacts.

公开(公告)号：US10944938B2

公开(公告)日：2021-03-09

申请号：US15515984

申请日：2015-09-29

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ning Xu ,  James E. Crenshaw ,  Scott Daly ,  Samir N. Hulyalkar ,  Raymond Yeung

IPC: H04N7/01 ,  H04N19/46 ,  H04N19/157 ,  H04N5/14 ,  H04N5/21

Abstract: Methods and systems for controlling judder are disclosed. Judder can be introduced locally within a picture, to restore a judder feeling which is normally expected in films. Judder metadata can be generated based on the input frames. The judder metadata includes base frame rate, judder control rate and display parameters, and can be used to control judder for different applications.

公开(公告)号：US10200666B2

公开(公告)日：2019-02-05

申请号：US15041982

申请日：2016-02-11

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ning Xu ,  Georgios Georgiadis ,  James E. Crenshaw

IPC: H04N13/00 ,  G06T7/269 ,  G06T7/285 ,  H04N13/139 ,  H04N13/128 ,  H04N13/144

Abstract: Methods and systems for enhancing motion estimation are disclosed for stereoscopic video sequences. The motion vector parameters and disparity values for consecutive frames may be calculated to estimate motion in a coherent manner between two channels, such as a left channel and a right channel in stereoscopic images. Occlusion handling is also applied to improve the estimation.