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:2008
卷号:XXXVII Part B1
页码:633-638
出版社:Copernicus Publications
摘要:Since 2004 the Spanish National and Regional Governments are producing aerial orthophoto coverages renewed every two years. The Castilla y León region has introduced some modifications in the production schema in order to abbreviate the orhophoto delivery date. Year in, year out modifications in the exterior orientation procedure has been done and the spatial accuracy results has been improved according with the tests carried out by the quality assessment team. In 2007 the regional government built a calibration field in order to compute the most suitable minsalignment parameters for Direct Orientation. Using the calibration field the spatial accuracy obtained by Direct Orientation almost covers the national technical specification written for bundle adjustment (RMSE = GSD for X, Y and Z). The Integrated Sensor Orientation applied in images from digital frame cameras has proved an improvement in the spatial accuracy respect the traditional L1 GPS supported bundle adjustment applied to scanned images from film cameras
关键词:Accuracy; Calibration; Camera; GPS/INS; Direct Georeferencing; Orientation; Orthoimage