A Flexible Mathematical Method for Camera Calibration in Digital Aerial Photogrammetry
A Flexible Mathematical Method for Camera Calibration in Digital Aerial Photogrammetry
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DOI：
10.14358/pers.78.10.1069
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发表时间：
2012-10-01
影响因子：
1.3
通讯作者：
Schneider, Werner
中科院分区：
文献类型：
--
作者：
Tang, Rongfu;Fritsch, Dieter;Schneider, Werner
自标定在摄像机系统的自动内外定位中起着重要的作用。提出了一种新的用于机载数字相机标定的自标定附加参数（ap）族。摄影测量自标定在很大程度上可以看作是数学上的一个函数逼近问题。基于严格逼近理论，从正交Legendre多项式出发，建立了一类新的Legendre自校准ap。提出了一种评估原位摄像机标定潜力的方法。在DMC、UltracamX、UltracamXp和DigiCAM相机系统上进行了许多现场测试，研究了Legendre APs的性能。在水平和垂直维度上，试验的外部精度分别可达到0.2 GSD和0.4 GSD。图像测量的后验标准差估计是近似的。0.12像素甚至更小。说明了勒让德二世的优点优于传统的对应物。从理论和实践的角度来看，勒让德的正交，严谨，灵活，有效的校准帧格式机载相机。
Self-calibration plays a significant role in the automatic interior/exterior orientation of camera systems. This paper presents a new family of self-calibration additional parameters (APs) for digital airborne camera calibration. Photogrammetric self-calibration can (to a very large extent) be considered as a function approximation problem in mathematics. Based on the rigorous approximation theory, a new family of so-called Legendre self-calibration APs is developed from the orthogonal Legendre Polynomials. An approach is suggested to assess the full potential of in-situ camera calibration. The performance of Legendre APs is investigated in many field tests on the DMC, UltracamX, UltracamXp and DigiCAM camera systems. The external accuracy in the tests can reach 0.2 GSD and 0.4 GSD in horizontal and vertical dimensions, respectively. The posterior standard deviation estimation of image measurements is approx. 0.12 pixel or even less. The advantages of Legendre ill's are illustrated over the conventional counterparts. From both the theoretical and practical views, Legendre ill's are orthogonal, rigorous, flexible, and effective for calibrating frame-format airborne cameras.