Linear Pushbroom Cameras
Linear Pushbroom Cameras
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DOI：
10.1007/3-540-57956-7_63
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发表时间：
1994-06
期刊：
影响因子：
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通讯作者：
R. Hartley;R. Gupta
中科院分区：
文献类型：
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作者：
R. Hartley;R. Gupta
由于轨道卫星相对于旋转地球的运动以及涉及轨道动力学的数学模型的非线性，对卫星成像中常用的推扫式传感器进行建模和分析是困难的并且计算密集的。与全轨道推帚模型相比，本文提出的线性推帚模型具有计算简单的优点，同时给出了非常精确的结果。线性推扫模型可以很容易地解决常见的摄影测量问题。线性推扫模型产生的理论见解对完整模型也近似有效。线性推扫式相机的对极几何与透视相机的对极几何不同。然而，矩阵类似于透视相机的基本矩阵示出存在线性推扫传感器。从这一点，它示出了一个场景是由线性推扫相机从两个视图的仿射变换确定的。
Modelling and analyzing pushbroom sensors commonly used in satellite imagery is difficult and computationally intensive due to the motion of the orbiting satellite with respect to the rotating earth, and the non-linearity of the mathematical model involving orbital dynamics. Thelinear pushbroommodel) introduced in this paper has the advantage of computational simplicity while at the same time giving very accurate results compared with the full orbiting pushbroom model. The common photogrammetric problems may be solved easily for the linear pushbroom model.The linear pushbroom model leads to theoretical insights that are approximately valid for the full model as well. The epipolar geometry of a linear pushbroom camera is different from that of a perspective camera. Nevertheless, a matrix analogous to the fundamental matrix of perspective cameras is shown to exist for linear pushbroom sensors. From this it is shown that a scene is determined up to an affine transformation from two views with linear pushbroom cameras.