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Demosaicking Method Using Color Difference in Wavelet Domain  

Jeong, Bo-Gyu (School of Electrical Engineering, Pusan National University)
Seong, Young-Min (School of Electrical Engineering, Pusan National University)
Kim, Byung-Chul (Department of Biomedical Engineering, Pusan National University)
Eom, Il-Kyu (School of Electrical Engineering, Pusan National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.47, no.4, 2010 , pp. 41-48 More about this Journal
Abstract
In this paper, we present an efficient demosaicking method using the difference between color channels in the wavelet domain. In our method, the low frequency wavelet coefficients are obtained by an edge-directive interpolation using the observed high frequency coefficients. The missing high frequency coefficients are obtained by the estimated low frequency coefficients. In order to reduce artifacts in high frequency domain and to improve visual quality, we update the high frequency coefficient using the color difference rule in the wavelet domain. We simulate our demosaicking method in the wavelet domain and compare our algorithm to the existing demosaicking schemes. Experimental results illustrate that the proposed method can generate enhanced demosaicking results.
Keywords
demosaicking; wavelet; color filter array; color difference;
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