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http://dx.doi.org/10.5573/ieie.2015.52.9.036

A Low-Complexity Processor for Joint Vignetting and Barrel distortion Correction for Wide-Angle Cameras  

Moon, Sun-A (School of Electronics and Information Engineering, Korea Aerospace University)
Hong, Jin-U (School of Electronics and Information Engineering, Korea Aerospace University)
Kim, Won-Tae (Department of Electronics and Information Engineering, Korea Aerospace University)
Kim, Tae-Hwan (School of Electronics and Information Engineering, Korea Aerospace University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.9, 2015 , pp. 36-44 More about this Journal
Abstract
This paper proposes a low-complexity processor to correct vignetting and barrel distortion for wide-angle cameras. The proposed processor calculates the required correcting factors by employing the piecewise linear approximation so that the hardware complexity can be reduced significantly while maintaining correction quality. In addition, the processor is designed to correct the two distortions concurrently in a singular pipeline, which reduces the overall complexity. The proposed processor is implemented with 18.6K logic gates in a $0.11{\mu}m$ CMOS process and shows the maximum correction speed of 200Mpixels/s for correcting an image of which size is $2048{\times}2048$.
Keywords
vignetting distortion correction; barrel distortion correction; wide-angel cameras; piecewise linear approximation; digital circuits;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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