高分辨率全帧CCD相机电路系统的设计 |
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作者姓名: | 刘光林 杨世洪 吴钦章 夏默 |
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作者单位: | 1. 中国科学院光电技术研究所,四川 成都 610209; ;2. 中国科学院研究生院,北京 100039 ; |
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摘 要: | 基于Dalsa公司的面阵CCD评价板EKxxxx设计了一套高分辨率全帧CCD相机电路系统。系统采用专用集成芯片SAA8103和TDA9991构成时序发生器和驱动器,采用TDA9965进行前端信号处理。采用单片机对系统进行控制并应用Camera Link接口简化了体系结构。针对CCD多路输出时各通道存在不均匀性,提出采用两点校正法进行校正。该系统能以较高的帧频获取超高分辨率的图像,适用于航空拍摄、数字后背等场合。
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关 键 词: | 高分辨率 电荷耦合器件 相关双采样 Camera Link 非均匀性校正 |
Design of high resolution camera system based on full frame CCDs |
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Authors: | LIU Guang-Lin YANG Shi-Hong WU Qin-Zhang XIA Mo |
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Institution: | 1.The Institute of Optics and Electronics, the Chinese Academy of Science, Chengdu 610209, China;2. Graduate University of Chinese Academy of Science, Beijing 100039, China ; |
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Abstract: | A design of high resolution camera system based on DALSA’ s CCD evaluation kit EKxxxx was presented. It was composed of a pulse pattern generator (SAA8103), a vertical line driver (TDA9991), four analog-to-digital interfaces (TDA9965) and a system controller (P89LV51RD2). Camera link with medium configuration was adopted to transfer digital images. The software for controlling and debugging the camera was developed. To correct the non-uniformity of 4 outputs, a method based on two-point correction was described. The system can acquire ultra high resolution pictures at a high frame rate thus it is suitable for aero photography. |
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Keywords: | High resolution CCD CDS Camera Link Non-uniformity correction |
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