Proceedings ArticleDOI
Single Layer Progressive Coding for High Dynamic Range Videos
Kadu Harshad,Qing Song,Guan-Ming Su +2 more
- pp 86-90
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TLDR
This paper proposes transmitting the progressive metadata format with a base layer video bitstream, which provides a significant design improvement over the existing architectures, preserves colorist intent at all the supported brightness ranges and still keeps the bandwidth or storage overhead minimal.Abstract:
There are different kinds of high dynamic range (HDR) displays in the market today. These displays have different HDR specifications, like, pealddark brightness levels, electro-optical transfer functions (EOTF), color spaces etc. For the best visual experience on a given HDR screen, colorists have to grade videos for that specific display’s luminance range. Uut simultaneous transmission of multiple video bitstreams graded at different luminance ranges, is inefficient in terms of network utility and server storage. To overcome this problem, we propose transmitting our progressive metadata with a base layer video bitstream. This embedding allows different overlapping portions of metadata to scale the base video to progressively wider luminance ranges. Our progressive metadata format provides a significant design improvement over the existing architectures, preserves colorist intent at all the supported brightness ranges and still keeps the bandwidth or storage overhead minimal.read more
Citations
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Journal ArticleDOI
The technology behind the exceptional visual experience via high dynamic range
TL;DR: Major technical advances in HDR signals is reviewed in the context of transfer functions that convert optical signals to electrical signals and vice versa, and some key industry applications of HDR processing systems are discussed, followed by some future directions of HDR technology.
Proceedings ArticleDOI
Reverse Tone Mapping of High Dynamic Range Video Using Gaussian Process Regression
TL;DR: The proposed Gaussian Process Regression based machine learning method is able to estimate the reverse tone mapping function that is used to convert SDR signal into its HDR equivalent, and preliminary experimental results indicate that the approach produces visually pleasing HDR images.
Book ChapterDOI
When Smart Signal Processing Meets Smart Imaging
Bihan Wen,Su Guan-Ming +1 more
TL;DR: Some recent trends on techniques for high dynamic range (HDR) imaging, compressed sensing, computational imaging, as well as the image recovery methods with data-driven regularizers are covered.
Book ChapterDOI
Improving Temporal Stability in Inverse Tone-Mapped High Dynamic Range Video
Neeraj J. Gadgil,Su Guan-Ming +1 more
TL;DR: A weighted temporal filtering method to smooth look-up table (LUT)-based ITM to avoid visual artifacts and is highly portable and can be applied to any set of LUT-based ITMs, agnostic to the way of their generation.
Proceedings ArticleDOI
Efficient Banding-Alleviating Inverse Tone Mapping for High Dynamic Range Video
TL;DR: This work proposes a novel method to efficiently construct iTM to reduce banding in the highlight regions of HDR images by using a given iTM curve to estimate the banding-risk in each luminance range, based on the input SDR image properties.
References
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Journal ArticleDOI
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