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Remote Sens. 2016, 8(11), 893; doi:10.3390/rs8110893

Self-Calibration Method Based on Surface Micromaching of Light Transceiver Focal Plane for Optical Camera

1,2,3,4,* , 5
,
6
and
1,2,3
1
Department of Precision Instrument, Tsinghua University, Beijing 100084, China
2
State Key Laboratory of Precision Measurement Technology and Instruments, Beijing 100084, China
3
Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Beijing 100084, China
4
Photonics and Sensors Group, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK
5
Chuangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
6
School of Engineering and Information Technology, University of New South Wales, Canberra 2610, Australia
*
Author to whom correspondence should be addressed.
Academic Editors: Gonzalo Pajares Martinsanz and Prasad S. Thenkabail
Received: 23 August 2016 / Revised: 13 October 2016 / Accepted: 21 October 2016 / Published: 29 October 2016
View Full-Text   |   Download PDF [6307 KB, uploaded 29 October 2016]   |  

Abstract

In remote sensing photogrammetric applications, inner orientation parameter (IOP) calibration of remote sensing camera is a prerequisite for determining image position. However, achieving such a calibration without temporal and spatial limitations remains a crucial but unresolved issue to date. The accuracy of IOP calibration methods of a remote sensing camera determines the performance of image positioning. In this paper, we propose a high-accuracy self-calibration method without temporal and spatial limitations for remote sensing cameras. Our method is based on an auto-collimating dichroic filter combined with a surface micromachining (SM) point-source focal plane. The proposed method can autonomously complete IOP calibration without the need of outside reference targets. The SM procedure is used to manufacture a light transceiver focal plane, which integrates with point sources, a splitter, and a complementary metal oxide semiconductor sensor. A dichroic filter is used to fabricate an auto-collimation light reflection element. The dichroic filter, splitter, and SM point-source focal plane are integrated into a camera to perform an integrated self-calibration. Experimental measurements confirm the effectiveness and convenience of the proposed method. Moreover, the method can achieve micrometer-level precision and can satisfactorily complete real-time calibration without temporal or spatial limitations. View Full-Text
Keywords: remote-sensing optical camera; self-calibration; position determination remote-sensing optical camera; self-calibration; position determination
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Li, J.; Zhang, Y.; Liu, S.; Wang, Z. Self-Calibration Method Based on Surface Micromaching of Light Transceiver Focal Plane for Optical Camera. Remote Sens. 2016, 8, 893.

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