NDLI: Two layer scheme for encoding of high dynamic range images

Content Provider	IEEE Xplore Digital Library
Author	Khan, I.R.
Copyright Year	2008
Description	Author affiliation: Dept. of Brain Sci. & Eng., Kyushu Inst. of Technol., Kitakyushu (Khan, I.R.)
Abstract	With advent of high dynamic range (HDR) imaging techniques, it has been possible to capture natural scenes in larger details. HDR images are tone-mapped to lower dynamic range (LDR) versions for displaying on paper or a screen. Details lost during tone-mapping are important for certain existing and future applications, and need to be preserved. However, the size of HDR images is very large and that gives rise to need of effective encoding techniques. In this paper, we present an encoding scheme for HDR images, which significantly reduces their storage requirements, with a negligible loss of information. We model an HDR image as a piecewise linear function of its tone-mapped version. The tone-mapped image and the error in modeling are stored as LDR images, and these two along with the created model, approximate the HDR image. Comparison with the existing state of the art technique is given to show the effectiveness of our proposed scheme.
Starting Page	1169
Ending Page	1172
File Size	198262
Page Count	4
File Format	PDF
ISBN	9781424414833
ISSN	15206149
DOI	10.1109/ICASSP.2008.4517823
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image coding Dynamic range Layout Displays Transform coding Image storage Image processing Digital cameras Piecewise linear techniques Piecewise linear approximation Raw images High dynamic range imaging HDR
Content Type	Text
Resource Type	Article

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