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http://dx.doi.org/10.5573/ieie.2017.54.2.085

Removing Chromatic Aberration in Color Image by Gradient Difference Minimization  

Kwon, Ji Yong (Department of Electrical and Electronic Engineering, Yonsei University)
Kang, Moon Gi (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.54, no.2, 2017 , pp. 85-91 More about this Journal
Abstract
Lenses have different refractive indices for different wavelengths of light. This is why different wavelengths of rays are focused at different positions in the focal plane. Images are blurred and noticeable colored edges appear around the objects, which is known as chromatic aberration (CA). In this paper, an algorithm for removing CA artifacts in color images is proposed. Based on the fact that the gradients of color channels are highly correlated, the differences of the gradients of the channels in edges are minimized. The cost function is designed by using the gradients of the channels. Experimental results show the good performance of the proposed algorithm in removing the CA artifacts.
Keywords
기울기;색수차;컬러 영상;영상 복원;
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Times Cited By KSCI : 1  (Citation Analysis)
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