一种有效的数字图像传感器彩色插值算法

Effective Color Filter Array Demosaicing Method

Bayer彩色滤光片阵列在图像采集设备上的广泛使用.使得必须通过插值的方法恢复每个像素点丢失的另外两个通道的色彩值;文中提出了一种有效的彩色插值算法.它以基于边缘检测的插值算法为基础.通过相邻像素的相似性进一步得到更为准确的边缘信息;同时还使用了颜色比恒定原理对另外两个丢失的色彩进行还原;和基于边缘检测的插值算法相比.这种算法可以有效地减少插值错误,同时计算复杂度比较低.满足了实时图像还原的要求;在实验中证明,这种算法是有效的。

An effective color filter array （CFA） Demosaicing method Is proposed tor digital still cameras m which a stogie CCD or CMOS image sensor is used. Since a CFA is adopted, we must interpolate missing color values in the red, green and blue channels at each pixel location. Compared with most of other algorithms, we focus on eliminating the color artifacts with low computational complexity. Based on edge directional algorithms, we use the homogeneity of adjacent pixels to determine the edge direction information. Meanwhile we use the hue constant law to interpolate the missing channels. The experiment results show that this algorithms can effectively reduce color artifacts with low computational complexity.