文章基本信息

标题：Laboratory Geometric Calibration of Digital Aerial Camera based on Focused Collimator-Array
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作者：Ying Li ; Ying Li ; Fengzhu Liu 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：237
期号：3
页码：032007
DOI：10.1088/1755-1315/237/3/032007
出版社：IOP Publishing
摘要：The geometric calibration of digital aerial camera, including the calibration of inner orientation elements and distortion model parameters, is an indispensable technical of aerial photogrammetry. This paper proposes the use of a focused collimator-array (FCA) device to achieve a stable, repeatable laboratory geometric calibration of digital aerial camera. This device uses multiple collimators and star testers as target generators. After measuring the coordinates of targets on the CCD plane and corresponding standard angles between the collimator optical axis and the principal optical axis, the high-precision geometric calibration of digital aerial camera can be realized according to the geometric calibration model of this paper. Experiment results show that the FCA device can calibrate various types of area digital aerial cameras at different focal lengths and prove the correctness and the reliability of this calibration method using a typical digital aerial camera - Cannon EOS 5D Mark II. This device has good repeatability and high stability, which can satisfy the requirements of digital aerial camera calibration standards.