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Alexander Efremov

dblp:72/6035 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2006
—ORCID · unresolved

Domains — the database's venue-derived domains; a paper can count in several

Graphics, computer vision, multimedia, augmented reality and games · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Image and video coding · 100%

Topics — the 4 heaviest of 4, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Image and video coding › video compression
high dynamic range video coding
0.112006
Backward compatible high dynamic range MPEG video compression · ACM Trans. Graph. 2006
Image and video coding › video coding standards
MPEG video coding
0.112006
Backward compatible high dynamic range MPEG video compression · ACM Trans. Graph. 2006
Image and video coding
video compression
0.112006
Backward compatible high dynamic range MPEG video compression · ACM Trans. Graph. 2006
Image and video coding
visual masking
0.012006
Backward compatible high dynamic range MPEG video compression · ACM Trans. Graph. 2006

Methods — techniques the papers use, named apart from their topics

reconstruction function · 0.1luminance adaptation model · 0.1contrast sensitivity model · 0.1
YearPublicationVenuePosition
2006 Backward compatible high dynamic range MPEG video compression
abstract
To embrace the imminent transition from traditional low-contrast video (LDR) content to superior high dynamic range (HDR) content, we propose a novel backward compatible HDR video compression (HDR MPEG) method. We introduce a compact reconstruction function that is used to decompose an HDR video stream into a residual stream and a standard LDR stream, which can be played on existing MPEG decoders, such as DVD players. The reconstruction function is finely tuned to the content of each HDR frame to achieve strong decorrelation between the LDR and residual streams, which minimizes the amount of redundant information. The size of the residual stream is further reduced by removing invisible details prior to compression using our HDR-enabled filter, which models luminance adaptation, contrast sensitivity, and visual masking based on the HDR content. Designed especially for DVD movie distribution, our HDR MPEG compression method features low storage requirements for HDR content resulting in a 30% size increase to an LDR video sequence. The proposed compression method does not impose restrictions or modify the appearance of the LDR or HDR video. This is important for backward compatibility of the LDR stream with current DVD appearance, and also enables independent fine tuning, tone mapping, and color grading of both streams.
Rafal Mantiuk, Alexander Efremov, Karol Myszkowski, Hans-Peter Seidel
ACM Trans. Graph.2