| 基于图像处理技术的航空相机镜头焦面自准直定位研究 |
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| 引用本文： | 赵育良,许兆林.基于图像处理技术的航空相机镜头焦面自准直定位研究[J].应用光学,2012,33(2):288-292. |
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| 作者姓名： | 赵育良 许兆林 |
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| 作者单位： | 1.海军航空工程学院 青岛分院,山东 青岛 266041 |
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| 摘 要： | 提出基于图像处理技术的航空相机镜头焦面定位的方法，利用光电自准直原理进行焦面定位，并选用两种图像清晰度评价函数实时提取图像清晰度特征，采用优化的爬山算法进行快速检焦。仿真实验结果表明:利用本系统对焦距为750 mm,F数为6.3，CCD像元尺寸为6.8 m6.8 m，成像光谱为500 nm~800 nm的航空相机进行焦面定位精度测定，得到相机的半焦深为0.040 mm，可用于航空CCD相机的焦面检定及航空CCD相机的自动调焦系统。
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| 关 键 词： | 航空相机 自准直 图像处理 爬山算法 |
| 收稿时间： | 2011/6/21 |
Autocollimation location system of aerial camera lens' focus plane based on image processing technology |
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| ZHAO Yu-liang
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XU Zhao-lin.Autocollimation location system of aerial camera lens' focus plane based on image processing technology[J].Journal of Applied Optics,2012,33(2):288-292. |
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| Authors: | ZHAO Yu-liang XU Zhao-lin |
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| Institution: | 1.Qingdao Branch,Navy Aeronautical and Astronautical University,Qingdao 266041,China |
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| Abstract: | A measuring method of aerial camera lens' focus plane is presented, which locates focus plane using autocollimation theory. The system chooses two kinds of image definition evaluation function to extract the characteristics of image definition, and detects focus plane quickly using hill-climbing algorithm. Simulation experiment result proves that measuring and calibrating the focus plane of aerial camera using the autocollimation measuring system is characterized by high precision, high speed and good real-time performance, and has little influence by the artificial factors. The system is adapted for the focus plane calibration and auto-focusing system of aerial CCD camera. |
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| Keywords: | aerial camera autocollimation image processing technology hill-climbing algorithm |
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