Invention Grant
- Patent Title: Layer decomposition in hierarchical VDR coding
- Patent Title (中): 分层VDR编码中的层分解
-
Application No.: US14351647Application Date: 2012-11-01
-
Publication No.: US09497456B2Publication Date: 2016-11-15
- Inventor: Guan-Ming Su , Sheng Qu , Samir N. Hulyalkar , Tao Chen , Walter C. Gish , Hubert Koepfer
- Applicant: DOLBY LABORATORIES LICENSING CORPORATION
- Applicant Address: US CA San Francisco
- Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee Address: US CA San Francisco
- International Application: PCT/US2012/062932 WO 20121101
- International Announcement: WO2013/067101 WO 20130510
- Main IPC: H04N19/126
- IPC: H04N19/126 ; H04N19/30 ; H04N19/124 ; H04N19/103 ; H04N19/98

Abstract:
Techniques use multiple lower bit depth codecs to provide higher bit depth, high dynamic range, images from an upstream device to a downstream device. A base layer and one or more enhancement layers may be used to carry video signals, wherein the base layer cannot be decoded and viewed on its own. Lower bit depth input image data to base layer processing may be generated from higher bit depth high dynamic range input image data via advanced quantization to minimize the volume of image data to be carried by enhancement layer video signals. The image data in the enhancement layer video signals may comprise residual values, quantization parameters, and mapping parameters based in part on a prediction method corresponding to a specific method used in the advanced quantization. Adaptive dynamic range adaptation techniques take into consideration special transition effects, such as fade-in and fade-outs, for improved coding performance.
Public/Granted literature
- US20140247869A1 LAYER DECOMPOSITION IN HIERARCHICAL VDR CODING Public/Granted day:2014-09-04
Information query