Title:
Layer decomposition in hierarchical VDR coding
Document Type and Number:
Japanese Patent JP5970501
Kind Code:
B2
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.
Inventors:
Su, Gwan-Mean
Kyu, shen
Hyyarkar, Samir N
Chen, Tao
Gish, Walter Sea
Koopfell, Hubert
Kyu, shen
Hyyarkar, Samir N
Chen, Tao
Gish, Walter Sea
Koopfell, Hubert
Application Number:
JP2014128782A
Publication Date:
August 17, 2016
Filing Date:
June 24, 2014
Export Citation:
Assignee:
Dolby Laboratories Licensing Corporation
International Classes:
H04N19/126; H04N19/15; H04N19/187; H04N19/30
Domestic Patent References:
| JP2009524371A | ||||
| JP2002510177A |
Other References:
Martin Winken et al.,Bit-Depth Scalable Video Coding,IEEE International Conference on Image Processing, 2007. ICIP 2007.,2007年 9月16日,Volume 1,pp.I-5-I-8
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki
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