基于图像处理技术的航空相机镜头焦面自准直定位研究

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

赵育良^,,
许兆林

1.
海军航空工程学院青岛分院,山东青岛 266041

详细信息

通讯作者:
赵育良（1976-），河北唐山人，硕士，海军航空工程学院青岛分院副教授，主要从事航空侦察技术和数字图像处理技术研究工作。

中图分类号: TN911.73
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出版历程
- 刊出日期: 2012-03-15

Autocollimation location system of aerial camera lens- focus plane based on image processing technology

ZHAO Yu-liang^,,
XU Zhao-lin

1.
Qingdao Branch,Navy Aeronautical and Astronautical University,Qingdao 266041,China

摘要

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。
- 航空相机 /
- 自准直 /
- 图像处理 /
- 爬山算法
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.
- aerial camera /
- autocollimation /
- image processing technology /
- hill-climbing algorithm

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参考文献(1)

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