| Technology and Methodology |
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Multi-image Space Resection Based Geometric Calibration for the Four Band CCD Camera |
| CHEN Xing-feng 1,2,3， GU Xing-fa 1 ,3， GE Hui-bin 1,3,4， ZHENG Feng-jie 1,3,4, ZHANG Jin-jin 1,3,4， LIU Jun 5 |
| (1.State Key Laboratory of Remote Sensing Science， Institute of Remote Sensing Applications， CAS， Beijing 100101， China； 2.Graduate University of Chinese Academy of Sciences， Beijing 100049， China； 3.Demonstration Center of Spaceborn Remote Sensing， National Space Administration， Beijing 100101， China； 4.School of Surveying & Land Information Engineering， Henan Polytechnic University， Jiaozuo 454000， China； 5.Institute of Surveying and Mapping， Information Engineering University， Zhengzhou 450001， China) |
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Abstract High altitude photographic work such as aerial photogrammetry and UAV photography has very high demands on geometric optical parameters of the CCD camera. As one millimeter or one pixel error of geometric optical parameter tends to cause the error of a few meters or even dozens of meters on the ground, the camera’s high-precision geometric optical parameter calibration is a crucial step for data geometric process after aerial photogrammetry. In this paper, the initial value of inner orientation elements (the main distance and principal point offset) and the exterior orientation elements (three elements in a straight-line and three angles elements) were acquired by DLT method，and then the single-image space resection and multi-image space resection methods were used to get the geometric optical parameters of the camera. It is concluded that the multi-image space resection is superior to the single-image space resection.
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Issue Date: 22 March 2011
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2011,
Vol. 23
