http://www.gissky.net- GIS空间站

从摄影光学理论出发,推导摄影物镜成像系统的基点位置公式;利用针孔成像模型,分析得出摄影物镜的投影中心即为成像系统两节点的等效;简要阐述双介质摄影测量的传统观点,利用同一摄影物镜在不同介质中构成的光学系统,说明双介质摄影测量成像系统基点位置相对单介质时发生变化,并在此基础上提出与传统观点不同的看法——双介质摄影测量共线理论;详细分析双介质摄影测量的针孔模型,得出"双介质摄影测量时相机主距近似等于单介质摄影测量主距与双介质摄影的物方空间折射率的乘积"这一论断;最后通过水下摄影试验结果证明上述结论。 更多还原

【Abstract】 With a brief introduction of the pin-hole model,it describes the view that the projection center of camera is the equivalent of two nodal points.This paper also presents a different view from the traditional standpoint of two-media photogrammetry,illustrating the collinearity relation for two-media photogrammetry owe to the shift of datum marks.With the basis of the collinearity theory,it concludes that the principal length in two-media photogrammetry is approximately equal to the one in one-med... 更多还原