RGBX格式图像传感器的去马赛克算法

General Demosaicking Method for RGBX Colour Filter Array

Bayer格式的图像传感器在每个像素位置上只采样红绿蓝三原色中的一种。在某些应用中,Bayer颜色滤光片阵列(colour filter array)的一个G(绿色)滤光片会被其他滤光片代替,如W(白色)滤光片或IR(红外)滤光片等。而绝大多数发表的去马赛克算法都是基于经典的Bayer格式。文中提出了一种通用的去马赛克算法,不仅可以适用于所有以2x2为最小采样周期的图像传感器而且该方法在颜色峰值信噪比(CPSNR)方面也达到了很高的指标。

Image sensors with classic Bayer colour filter array（CFA） sample a single colour component of RGB at each spatial position.For some special applications, one G filter of Bayer CFA is replaced with other filter such as W（white） or IR（Infra-Red）. Most of the published demosaicking algorithms were based on the Bayer CFA. In this paper, we present a universal interpolation method for all CFA patterns with the2 2 sampling period. Theproposed method achieves excellent results in colour peak signal-to-noise ratio（CPSNR）.