Method for improving image quality of image sensor

Using improved Image Signal Processing (ISP) along with a multi-layer Color Filter Array (CFA) architecture to capture both the Red-Green-Blue (RGB) as well as the Red-X-Blue (RXB) images substantially simultaneously on the same Complementary Metal Oxide Semiconductor (CMOS) image sensor chip in a single shot so that subsequent image processing stage(s) can choose between RGB and RXB images to improve the quality of the final image. The color X in the RXB image may be a white color, a yellow color, or a cyan color. In contrast to the individual RWB or RGB imaging based conventional CMOS sensors, the disclosed CMOS sensor with one or more layers of specifically-selected CFAs can capture both the RGB and RXB images in a single shot using associated ISP. The multi-layer sensor may be an organic sensor or a stacked X3 sensor. The dual RGB-RXB imaging may reduce colorblindness, chromatic aberration, and saturation artifacts. 提供了种改善图像传感器的图像质量的方法，所述方法使用改进的ISP连同多层CFA架构以在单次拍摄中在同CMOS图像传感器芯片上基本上同时捕获RGB图像和RXB图像两者，使得随后的图像