| Digital camera get fast development in recent years, because the character of its cheap, carrying convenient , easy to deal with etc., applying digital camera technology to the aspect of digital close-range photogrammetry to realize close-range object surface three-dimensional modeling become present focus of research.This thesis is on the basis of analysing mechanism of the formation of image of digital camera and the main problem to be solved of the digital camera applied to the aspect of digital close-range photogrammetry, putting forward the theory and method of the digital camera calibration, performance and specification of digital camere that used in close-range photogrammetry, utilize digital camera to validate and test the method of calibration for the foundation of three-dimensional indoor control field and outdoor control field with middle and high precision. On the basis of dealing with and analysing the experimental result, have analysed in detail to the precision of the digital camera. Think the digital camera used in close-range photogrammetry under certain specification and performance condition, can reach the demand of high-accuracy three dimensional surface modeling.Aimed at stereo photo-pairs what the digital camera is obtained, with using of the technique of digital image process, draw the characteristic of the image, match the image, calculated with three-dimensional surface data modeling, utilize various kinds of operators to draw the characteristic of the image, the further understanding of digital image has been accomplished. Furthermore, actors affecting the accuracy of close-range photogrammetry have been resulted from the research of correlative accuracy analysis and experiment, some suggestion have been put forward to get higher precision in digital close-rangephotogrammetry.In the thesis program has been made with Visual C++ based on the Object Oriented designing principles and programming methods. |
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