文章基本信息

标题：THE INFLUENCE OF DIGITAL ELEVATION MODEL QUALITY ON THE ORTHORECTIFICATION OF VHRS IKONOS-2
其他标题：WPŁYW JAKOŚCI NUMERYCZNEGO MODELU TERENU NA WYNIK ORTOREKTYFIKACJI WYSOKOROZDZIELCZYCH OBRAZÓW SATELITARNYCH IKONOS-2
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作者：Piotr WęŜyk ; Krystian Pyka ; Ireneusz Jędrychowski 等
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：The aim of the study was to define the influence of different types of Digital Elevation Models (DEMs) on the quality of the orthorectification process of very high resolution satellite (VHRS) IKONOS-2 images used in the “Mapping of the vegetation of the City of Cracow”. project The subject of the orthorectification were two satellite scenes (west and east of Cracow) of IKONOS-2 obtained on 25/06/2005. For the needs of orthorectification,three different digital elevation models were used. Two of them were made based on stereoscopic air-borne photographs on the respective scales of 1:13 000 and 1:26 000. They were prepared to generate air-borne orthophotomaps. The third model was made by digitizing contour lines from 1:50 000 topographical maps. All the models came to formed a regular grid with the sides: 15 m (15_DEM),20 m (20_DEM) and 30 m (30_DEM),respectively. Data from the IKONOS-2 scanner was delivered on the processing level of a Standard Geometrically Corrected type (known as Geo-Ortho ready) with the application of the Cubic Convolution (WGS84, UTM34N;PAN 0.8 m;MS 3.2 m) interpolation method. The accuracy (RMS XY) of the obtained raw data was about 12.4 m for scene west and 9.5 m for east scene (max. 34 metres for the summit of the Marshall Piłsudski Mound). In the process of the orthorectification,OrthoWarp ER (Inpho Technology) software was used. The same GCP for all models for the PAN band for the eastern (16 GCP) and western (15 GCP) scenes were used in the orthorectification process. The mean square error (RMS) of the location of co-ordinates XY was in ORTO_15 (based on the 15_DEM) result image below 2.0 metres (for scene west – 1.75 m;east – 2.16 m). Subsequently tested 20_DEM and 30_DEM caused slight deterioration of the location accuracy,when RMS grew to 2.37 m in both cases. The eastern scene of smaller angular declination of a scanner from the nadir (8.1°) than the western one (13.1°) showed slightly greater bias (additionally about 0.41 m for ORTO_15 and 0.26 m for ORTO_30). Processed into the form of orthoimages,the VHRS IKONOS-2 scenes fully met the expectations of the project as a basis for mapping the vegetation in each of the analysed cases of the application of different DEM. The comparison of the application of different types of digital elevation models of different characteristics in the process of generating satellite orthoimages confirmed the usefulness of the application of already publicly available DEM.
其他摘要：Celem prezentowanej pracy było ustalenie wpływu rodzaju modelu terenu na jakość ortorektyfikacji wysokorozdzielczych obrazów satelitarnych IKONOS-2. Przedmiotem ortorektyfikacji były dwie sceny satelitarne IKONOS-2 pozyskane w dniu 25.06.2005 r. Dwa z wyk
关键词：IKONOS-2;orthorectification;DEM;orthophotomap
其他关键词：IKONOS-2;NMT;ortorektyfikacja;ortofotomapa