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：2000
卷号：XXXIII Part B2
页码：233-240
出版社：Copernicus Publications
摘要：Direct georeferencing, i.e., direct measurement of the exterior orientation of an imaging sensor by means of integrated GPS/INS continues to generate an increasing interest in the surveying/mapping, and remote sensing communities. The primary driving force behind this process is, on one hand, a need to accommodate the new spatial data sensors, such as LIDAR or SAR (airborne systems), on the other hand, a substantial cost decrease, a possibility of automation of data reduction, and a short turn-around time offered by this technology. The Ohio State University is currently developing a GPS/INS/CCD integrated system for precise (centimeter level) monitoring of highway center and edge lines, sponsored by the Ohio Department of Transportation. The prototype-positioning component of the system is based on a tight GPS/INS coupling, and the imaging component (currently under development) will comprise a single down looking Megaplus ES 1.0/MV Kodak digital camera. This camera is equipped with a powerful 1K by 1K CCD sensor with an image acquisition rate of up to 15 frames per second. The high image rate provides sufficient overlap of the subsequent images, and thus, it will allow for stereo data processing, which, to a large extent, will be done in real-time. The major focus of this paper is the design, calibration, and preliminary performance analysis of the development prototype. The repeatability and consistency tests, based on the vehicle's repeated trajectories, the comparison of the coordinates of the control points extracted from the directly oriented imagery with ground truth, as well as a design architecture of the system, including the real-time image processing module, are presented
关键词：Direct Platform Orientation (DPO); Sensor Integration; Image processing; Global Positioning System ; (GPS); Inertial navigation system (INS); Mobile mapping
