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：2010
卷号：XXXVIII - Part 5
页码：510-515
出版社：Copernicus Publications
摘要：Engineering geodesy has undergone significant changes in recent years. The automation in the area of tacheometer measurement systems has begun years ago with automatic target recognition (ATR) and tracking features. Image processing has become a powerful tool of science and industry and is therefore an ideal enhancement for traditional tacheometers. Combining a conventional tacheometer with an imaging sensor poses a hybrid approach wherein a CCD or CMOS sensor is integrated in the optical path of the tacheometer's telescope. Such an image-based tacheometer is capable of capturing mosaic panoramic images through camera rotation, if the axes of the system are driven by computer controlled motors. With appropriate calibration these images are accurately geo-referenced and oriented. The captured images can be used for further image processing and detection of homologue points in stereo pairs of images as well as over multiple measurement epochs in order to be used for geodetic deformation analysis. At the Institute of Geodesy and Geophysics of Vienna University of Technology a new kind of image-based measurement system is under development (research project "i-MeaS – An Intelligent Image-Based Measurement System for Geo-Hazard Monitoring"). The system is based on automated 3D point detection and automated point matching over different measurement epochs. We report on the recent state of the implemented point detection procedure, its functionality and development stage
关键词：Deformation Measurements; Image Analysis; Image Point Detection; Matching
