标题：ASSESSMENT OF THE GROUND CONTROL POINTS NUMBER AND DIGITAL TERRAIN MODEL QUALITY ON THE GEOMETRIC QUALITY OF HIGH-RESOLUTION SATELLITE ORTHOPHOTOMAP
其他标题：WPŁYW LICZBY FOTOPUNKTÓW I DOKŁADNOŚCI NUMERYCZNEGO MODELU WYSOKOŚCIOWEGO NA DOKŁADNOŚĆ WYSOKOROZDZIELCZEJ ORTOFOTOMAPY SATELITARNEJ
期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2006
卷号：16
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：This paper presents the results of the research conducted by the Geodesy-Computer Science Joint-Stock Company COMPASS and the AGH University of Science and Technology Department of Photogrammetry and Remote Sensing Information. Several goals were intended to be achieved: comparison of the adjustment results obtained by implementation of orbital model and RPC coefficients,an accuracy evaluation of the generated orthoimages,assessment of the used Ground Control Points (GCPs) number influence on geometric quality of orthophotomaps,comparison of Intergraph and PCI Geomatics software for high-resolution satellite orthophotomap generation with RPC coefficients,evaluation of DTED Level 2 Digital Terrain Model applicability to high-resolution satellite orthophotomap generation. Two overlapping panchromatic Ikonos images of Cracow and its suburban areas and villages in the neighbourhood were orthorectified. Mainly GPS measured GCPs were used with some additional points and all Control Points were measured on an 1:5 000 scale aerial orthophotomap. Elevation data were obtained with precise a Digital Terrain Model generated from aerial photos on a scale of 1:13 000. In the case of the orbital model,the results achieved with 9,10 and 11 GCPs used for each scene were compared. For RPC case 2,4 and 9 points for each image were used. In both cases,tests were conducted for separate scenes and with tie points measurements. An accuracy assessment of the generated orthoimages was done based on 22 control points (11 for each scene) not used for geometric correction. The orthoimages generated with both tested methods had comparable geometric accuracy,with an rmsXZ error below 1.5 meters,but in the case of the RPC method a lower number of GCPs was needed. In both cases,better results were achieved if the GCPs used had been chosen within the full elevation range of the scenes. Increasing the GCPs number did not increase orthoimage accuracy. The results obtained using the tested software did not significantly differ. DTED Level 2 application instead of precise DTM did not cause a decrease in the geometric accuracy of the generated orthoimages.
其他摘要：Prezentowane prace wykonano w ramach projektu zainicjowanego przez Przedsiębiorstwo Geodezyjno-Informatyczne COMPASS S.A. w Krakowie i zrealizowanego wspólnie z Zakładem Fotogrametrii i Informatyki Teledetekcyjnej AGH. Celem przeprowadzonych badań było: p
