滤光轮分光的近红外彩色成像系统

刘亚欣; 王岭雪; 杨燕飞; 张玮; 王海山; 蔡毅

光学技术, 2016, 42 (4): 347, 网络出版: 2016-12-23

滤光轮分光的近红外彩色成像系统

Near infrared color imaging system using filter wheel

论文大纲

刘亚欣 ^*王岭雪杨燕飞张玮王海山蔡毅

作者单位

北京理工大学光电学院光电成像技术与系统教育部重点实验室, 北京 100081

滤光轮近红外彩色成像白平衡 filter wheel near-infrared color imaging white balancing

摘要

研制了滤光轮分光的近红外彩色成像系统。针对一款光谱响应延伸至近红外波段的CMOS大面阵黑白摄像机, 设计加工了大小适合的滤光轮和与光谱匹配的滤光片。根据滤光轮载荷选择了微型电机, 并采用由时间同步装置产生的脉冲信号触发滤光轮的转停; 采用基于灰度世界理论的RGB融合算法形成彩色图像。室内外的成像实验表明: 该系统实现了近红外波段的彩色成像, 尤其是夜天光中的近红外辐射, 使夜间拍摄的图像亮度得到了明显的提升。

Abstract

A Near-Infrared color imaging system using filter wheel is proposed and established. First, the large array CMOS is chosen as the imaging sensor with the spectral response ranges from 0.4μm to 1.0μm. Second, the filter wheel is designed. Third, the motor is chosen based on the filter wheel’s weight and the required speed. Fourth, the synchronous apparatus with a coupler is designed. Finally, the image is fused on the basis of Gray World Theory. A series of experiments are done both indoors and outdoors. It shows that this system colorizes the near-infrared image and also it is able to intensify the night image.

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刘亚欣, 王岭雪, 杨燕飞, 张玮, 王海山, 蔡毅. 滤光轮分光的近红外彩色成像系统[J]. 光学技术, 2016, 42(4): 347. LIU Yaxin, WANG Lingxue, YANG Yanfei, ZHANG Wei, WANG Haishan, CAI Yi. Near infrared color imaging system using filter wheel[J]. Optical Technique, 2016, 42(4): 347.

滤光轮分光的近红外彩色成像系统

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