Image Data Processing Methods Of UAV Low-Altitude Remote Sensing

The Unmanned Aerial Vehicle-UAV is also referred to the Unman-droved Aerial Vehicle that we mean the unman-droved plane with the fixed wings, unman-droved helicopter and unman-droved airship. We named the system making the low altitude measurement and photography through the UAV platform as the UAV Low Altitude Remote Sensing System, simply as UAVRS. The image which is acquired by UAVRS system is different from image of aerial photography on tradition. The captured image has problems such like small format images (Nikon D100 camera's format image are 23.7mm×15.6mm, Canon 5D camera's format image are 35.8mm×23.9mm) , excessive quantities of images (at most more than 20 images per route) , over tilt angle of images (as statistic k between ± 35) , irregular overlap (exist problems like forward overlap ≤30% , side overlap ≤20%) etc. These problems exist brings a whole series of trouble into image matching, image orientation and aerotriangulation and some other relative subject. It is also the new problem of the Digital Photogrammetric System that both national and international are facing. Only the solving of these issues can reflect the specialization and value of the UAVRS.To solve the existing UAVRS image data processing problem, the dissertation has studied these following subjects:(1)Analysis the source of image system error, give the correct mathematics model of distortion.(2)Study the methods of UAVRS image matching, how to improve the accuracy and validity of different scale and different grey level image matching and over tilt angle of images , discuss the solution of eliminating gross error.(3)Study the UAVRS image single model build problem. How to improve the accuracy of single model relative orientation and absolute orientation. How to improve the accuracy of forward intersection.(4)Study the UAVRS image of aerotriangulation, discuss the methods of build UAVRS image block . Give an operation methods, operation technique procdure and standard operation regulation. Discuss the effective element that made by the fieldwork to offices data...