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Erschienen in:
Signal Processing Methods for Light Field Displays Kapitel lesen Erstes Kapitel lesen

2019 | OriginalPaper | Buchkapitel

High Dynamic Range Video Coding

verfasst von : Konstantinos Konstantinides, Guan-Ming Su, Neeraj Gadgil

Erschienen in: Handbook of Signal Processing Systems

Verlag: Springer International Publishing

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Abstract

Methods for the efficient coding of high-dynamic range (HDR) still-images and video sequences are reviewed. In dual-layer techniques, a base layer of standard-dynamic range data is enhanced by additional image data in an enhancement layer. The enhancement layer may be additive or multiplicative. If there is no requirement for backward compatibility, adaptive HDR-to-standard dynamic range (SDR) mapping schemes in the encoder allow for improved coding efficiency versus the backward-compatible schemes. In single-layer techniques, a base layer is complemented by metadata, such as supplementary enhancement information (SEI) data or color remapping information (CRI) data, which allow a decoder to apply special “reshaping” or inverse-mapping functions to the base layer to reconstruct an approximation of the original HDR signal. New standards for exchanging HDR signals, such as SMPTE 2084 and BT. 2100, define new mapping functions for translating linear scene light captured by a camera to video and are replacing the traditional “gamma” mapping. The effect of those transforms to existing coding standards, such as high efficiency video coding (HEVC) and beyond, are reviewed, and novel quantization and coding schemes that take these new mapping functions into consideration are also presented.

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Vorheriges Kapitel Deep Neural Networks: A Signal Processing Perspective
Nächstes Kapitel Signal Processing for Control
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Fußnoten
1
Candela per square meter (cd/m2), also referred to as nit, is the international standard unit of luminance.
 
2
“Tone mapping” refers to the process of mapping luminance values in a high dynamic range to luminance values in a lower dynamic range.
 
3
PQ stands for “Perceptual Quantizer” EOTF, as defined by Miller et al. [7].
 
4
HLG stands for a non-linear transfer function known as “Hybrid Log-Gamma.”
 
5
WCG stands for wide color gamut, referring to any color gamut larger than the color gamut supported by the original analog television systems and CRTs. For example, Rec. BT. 2020 [51] defines a WCG container for ultra-high-definition TVs.
 
6
BDVM stands for Blu-Ray Disc Movie.
 
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Metadaten
Titel
High Dynamic Range Video Coding
verfasst von
Konstantinos Konstantinides
Guan-Ming Su
Neeraj Gadgil
Copyright-Jahr
2019
Buch
Handbook of Signal Processing Systems

Print ISBN: 978-3-319-91733-7

Electronic ISBN: 978-3-319-91734-4

Copyright-Jahr: 2019

DOI
https://doi.org/10.1007/978-3-319-91734-4_5

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