NDLI: A spline-like scheme for least-squares bilinear interpolations of images

Content Provider	IEEE Xplore Digital Library
Author	De Natale, F.G.B. Desoli, G.S. Giusto, D.D. Vernazza, G.
Copyright Year	1993
Description	Author affiliation: Dept. of Biophys. & Electron. Eng., Genoa Univ., Italy (De Natale, F.G.B.; Desoli, G.S.; Giusto, D.D.; Vernazza, G.)
Abstract	A novel image interpolation algorithm which uses a least-squares approach by means of a spline-like scheme is presented. Such an interpolation can be utilized for image-data compression both in a stand-alone way and as a boundary response in a two-source decomposition scheme. Conventional linear-interpolation approaches are described first. Then, a least-squares bilinear interpolation is proposed. The major advantages of this type of interpolation for image coding are the following: reduction in the tile effect by means of the continuity constraints imposed on the reconstruction and through the noncorrelation of the residual; lower computation complexity: more effective exploitation of interblock correlation compared with traditional block-coding methods; and robustness against noise compared with standard interpolation algorithms. Experimental results show that the efficiency of the proposed algorithm is high, and that higher reconstruction quality can be obtained by an appropriate encoding of the residuals.<>
Starting Page	141
Ending Page	144
File Size	292613
Page Count	4
File Format	PDF
ISBN	0780374029
ISSN	15206149
DOI	10.1109/ICASSP.1993.319767
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-04-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spline Interpolation Predictive models Equations Pixel Autocorrelation White noise Linear systems Transfer functions Colored noise
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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