Highly effective iterative demosaicing using weighted-edge and color-difference interpolations
IEEE Transactions on Consumer Electronics
Color filter array demosaicking: new method and performance measures
IEEE Transactions on Image Processing
Color Demosaicing Using Variance of Color Differences
IEEE Transactions on Image Processing
Demosaicing With Directional Filtering and a posteriori Decision
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
Color image demosaicking: An overview
Image Communication
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Demosaicing is a process of interpolating the missing colors of color filter array. Recently, a quite good demosaicing method using directional filtering and a posteriori decision has been proposed. However, the window size of classifiers in the decision is fixed, which may not be suitable for different kinds of image area. To solve this problem, we present variable-size classifiers in this paper. The size of classifiers is varied according to the roughness measurement of neighbor pixels. In addition, a scheme of proportional weights is proposed to increase the interpolated image quality. Combined with a modified refining step, the proposed method increases a little computational cost but can elevate the peak-signal to noise ratio up to 1.09 dB on average.