Laboratory Geometric Calibration of Non-metric Digital Camera

• Main Authors: YUAN Feng, ZHANG Jixian, QI Weijun, FANG Aiping
• Format: Article
• Language: zho
• Published: Surveying and Mapping Press 2016-05-01
• Series: Acta Geodaetica et Cartographica Sinica
• Subjects: non-metric digital camera; geometric calibration; interior orientation elements; distortion
• Online Access: http://html.rhhz.net/CHXB/html/2016-5-601.htm

Geometric calibration of non-metric digital camera, including the accurate determination of interior orientation elements and distortion parameters, directly affects the ultimate accuracy of its using in aerial photogrammetry. In this paper, a laboratory geometric calibration system of non-metric digital camera is developed. A collimator and a star tester are used as the target generator in this system. After measuring locations of targets in CCD and corresponding angles of parallel lights, high precision geometric calibration can be accomplished. Two kinds of mainstream digital aerial cameras, Canon EOS 5D Mark Ⅱ and Hasselblad H3D, are used to take experiments based on this system and the results are analyzed. Experiment results show that the method of this paper is correct and the calibration precision is reliable.