CCD/CMOS彩色数字相机颜色串扰效应研究  

Research on color crosstalk effect in CCD/CMOS color digital camera

作　　者：上官志浩 周士潮 马少鹏 SHANGGUAN Zhihao;ZHOU Shichao;MA Shaopeng(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《实验力学》2022年第5期597-609,共13页Journal of Experimental Mechanics

基　　金：国家自然科学基金(11727801,12102257);电子元器件可靠性物理及其应用技术重点实验室开放基金课题(02022022004)资助。

摘　　要：彩色数字相机的图像通道分离原理在单相机三维变形测量以及温度、变形同步测量等实验力学领域中有重要应用。在进行R、G、B通道分离时,颜色串扰效应会显著影响测量的精度。采用3CCD/CMOS彩色相机和拜尔彩色相机进行滤光拍摄对比实验,发现拜尔彩色相机中存在较为严重的颜色串扰效应,而3CCD/CMOS彩色相机基本无此效应。基于两种彩色数字相机的成像原理与特点,结合其光谱响应特性,进行了成像模拟和色彩还原插值模拟。研究结果表明,相机的光谱响应特性是颜色串扰效应产生的关键因素,而后处理色彩插值过程对其影响较小。上述研究结果可为基于图像通道分离的高精度测量设备研制提出改进方向和建议。The color channel separation principle of color digital cameras has important applications in the field of experimental mechanics, such as single-camera 3 D deformation measurement, temperature and deformation synchronous measurement, etc. In the separation of R, G, and B channels, the color crosstalk effect can significantly affect the accuracy of measurement. A comparison experiment based on the filtered photograph was carried out between 3 CCD/CMOS color camera and Bayer color camera. It was verified that the Bayer color camera had a more serious color crosstalk effect, while the 3 CCD/CMOS color camera basically had no such effect. Based on the imaging principles and characteristics of the color digital cameras, the imaging simulations and color reproduction interpolation simulations were conducted in conjunction with their spectral response characteristics. The research results showed that the spectral response of the camera was the key factor for the color crosstalk effect, while the post-processing color interpolation process was less influential. This study can provide improvement directions and suggestions for the development of high-precision measurement equipment based on color channel separation.

关 键 词：3CCD/CMOS彩色相机 拜尔彩色相机 颜色串扰 光谱响应特性 色彩插值 

分 类 号：TH744[机械工程—光学工程]