数码相机应用于物体表面三维重建的检校技术研究

【作者】 苗红杰；

【导师】 刘先林；

【作者基本信息】 首都师范大学 ， 地图学与地理信息系统， 2005， 硕士

【摘要】 数码相机近年得到快速发展,由于其价格低廉、携带方便、处理容易等特点,将数码相机技术应用于数字近景摄影测量方面实现近景物体表面三维建模成为当前研究的热点。 本文在分析数码相机成像机理和数码相机应用于近景摄影测量方面需要解决的主要问题基础上,提出了数码相机检校的理论和方法、用于近景摄影测量的数码相机性能和技术指标,并利用数码相机对所建立中高精度三维室内控制场和室外控制场进行检校方法的验证和试验。在对实验结果进行处理和分析的基础上,对数码相机的精度进行了详细分析,认为数码相机用于近景摄影测量在满足一定技术和性能指标条件下,能够达到中高精度地物三维表面建模要求。 针对数码相机获取的立体像对,本文研究中利用数字图像处理技术,进行图像特征点提取、图像匹配和三维表面数据建模计算,利用各种算子对图像进行了特征提取,加深了对数字图像处理的理解。并在实验基础上总结了影响数字近景摄影测量精度的主要因素,提出了提高精度的合理建议。 论文依据面向对象的设计原理和编程方法,用Visual C++开发实现了各种算法。更多还原

【Abstract】 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.更多还原