Color Image Enhancement using Subsampled Channel Difference
Seungjong Kim · International Journal of Signal Processing Image Processing and Pattern Recognition · 2017
To minimize the cost of color restoration, current digital cameras use color filter array (CFA) instead of beam splitters of full-color camera.In this paper, a new demosaicking method is proposed which has three stages: (1) green channel restoration, (2) red/blue channel restoration, and (3) three channels refinement.As green channel has more information than that of red/blue, green channel restoration is performed before red/blue channel restoration.The proposed method uses channel difference information and parameter applied weighted average approaches.Experimental results indicate that the proposed method provides reliable results in terms of objective and subjective metrics.