改进的补色模板彩色插值方法

Improvement on CMYG CFA Interpolation Method

提出一种改进的补色模板CFA插值算法,其思路是直接对补色通道CMYG进行CFA插值;然后进行CMYG到YCrCb的色空间转换;对Cr和Cb两个通道进行滤波来抑制边缘杂色和伪彩色,然后再转换到RGB空间去。采用多种不同类型和特征的图像进行测试并与未经改进的原算法对比,表明本算法图像质量平均有2.88 dB以上的改善。

However, the full-color images obtained from CCFA suffer from the color artifacts such as false color and zipper effects. In this paper, we propose a new color interpolation algorithm for CCFA, which idea is directly interpolation of complementary color filter array and then finishing color conversion to YCrCb; filtering both Cr and Cb channels to restrain from the color artifacts such as false color and zipper effects. Experimental results indicate that the proposed algorithm, outperforming the conventional method with respect to both objective and subjective criteria, has improved average PSNR over 2.88dB.