17-6 冗長Haar Wavelet変換を用いた高ISO感度カラー画像の復元(第17部門 画像処理)

抄録

This paper presents a method to restore a high ISO-sensitivity color image. Our proposed approach is composed of three consecutive stages. At the first stage, observed raw color data mosaicked with the Bayer color filter array are demosaicked with the bilinear interpolation method. At the second stage, to remove observation noise selectively, we apply the l^1-l^2 color shrinkage to undecimated Haar wavelet coefficients of the primarily demosaicked image. At the third stage, we apply the interative color-image deblurring approach with the undecimated Haar wavelet transform, to the denoised color image.