文章基本信息

标题：Analyze of Mathematical Models for Digital Camera Calibration
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作者：M. Haeri ; S. M. Ayazi
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B5
页码：759-760
出版社：Copernicus Publications
摘要：By development of digital camera technologies and some capabilities of these cameras, development of models to contribute these capabilities for close range photogrammetry needed. With these high resolution images and many images that can be derived from an object we can get more accurate and early 3D map of object. This benefit could be implementing in industrial photogrammetry to control quality of this products by low cost and equipment. First step in close range photogrammetry routine is camera calibration. All recent digital cameras do not have any complete information from distortion of camera lens and unfitness of CCDs. Therefore obtaining some information about digital camera parameters is necessary. After calibration of cameras we can get accurate information from images and combine image observations to obtain 3D-models based on analytical photogrammetry methods. The accurate 3D-model could help manufacturers to control quality of industrial products. In this paper we design a test field for extracting accurate parameters of digital camera. We select a 3D part of building and labelling it with some targets. Precise coordinates of these points derived by accurate device. In some calibration projects sometimes physical parameters of camera derive. But in our project after obtaining physical parameters of camera by additional parameters method we obtain some mathematical parameters by rational functions. Wherever collinearity equation requires suitable initial values then parameter definition by rational function may be very useful in this matter. Presenting a linear model for camera calibration could be easier and comfortable. Therefore we can evolve this method for self calibration. In this case, without obtaining feasible initial value, we can compute both camera parameters and exterior parameters of images
关键词：Photogrammetry; Close range; Calibration; DLT