Image Focusing Method Based on Multiple Differential Filtering Effects for Aerial Cameras

doi:10.3788/AOS202242.0411001

CIOMP OpenIR

	Image Focusing Method Based on Multiple Differential Filtering Effects for Aerial Cameras
	H. Wang; L. Zheng and Q. Kang
	2022
发表期刊	Guangxue Xuebao/Acta Optica Sinica
ISSN	2532239
卷号	42 期号:4
摘要	The imaging quality of the optical system in an aerial camera is significantly affected by the accuracy of focal plane detection. To resolve the focusing problem of aerial cameras, a focusing algorithm based on multiple differential filtering effects is proposed. First, the principle of focusing is expounded. With the basic rectangular filter as the design basis, a new filter suitable for focusing of aerial cameras is proposed to eliminate the influence of the relative displacement between the image and the filter, and its feasibility is proved from a mathematical point of view. Then, the filter is simulated by interlaced sampling of the image to complete the design of the image focusing algorithm. Finally, the images collected in the experiment are used to evaluate the focusing effect of this algorithm. The experimental results show that the proposed algorithm can eliminate the sinusoidal change caused by the relative displacement between the rectangular filter and the image. The proposed algorithm is able to meet engineering requirements with high sensitivity and a maximum error of 41.16 m, which is smaller than the half focal depth (76.8 m) of the optical system. 2022, Chinese Lasers Press. All right reserved.
DOI	10.3788/AOS202242.0411001
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66746
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	H. Wang,L. Zheng and Q. Kang. Image Focusing Method Based on Multiple Differential Filtering Effects for Aerial Cameras[J]. Guangxue Xuebao/Acta Optica Sinica,2022,42(4).
APA	H. Wang,&L. Zheng and Q. Kang.(2022).Image Focusing Method Based on Multiple Differential Filtering Effects for Aerial Cameras.Guangxue Xuebao/Acta Optica Sinica,42(4).
MLA	H. Wang,et al."Image Focusing Method Based on Multiple Differential Filtering Effects for Aerial Cameras".Guangxue Xuebao/Acta Optica Sinica 42.4(2022).

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