The NGA has initiated a program to evaluate high resolution commercial sensors developed by Space Imaging, DigitalGlobe, Orbimage and others. Recent evaluations have involved QuickBird panchromatic products including the Basic 1B, Ortho-Ready Standard 2A, orthorectified, and Basic Stereo Pair products. This paper presents the results of an additional geo-positional accuracy evaluation of multispectral QuickBird Ortho-Ready Standard 2A images. These products were compared to a globally distributed set of Ground Control Points (GCPs), and the calculated geo-positional accuracy was compared to the published QuickBird specifications and to the panchromatic Ortho-Ready Standard 2A product. The results of the panchromatic and multispectral bands are compared, and the band-to-band registration of the multispectral arrays is evaluated.
NIMA has initiated a program to evaluate high resolution commercial sensors developed by Space Imaging, Digital Globe, Orbimage and others. This paper presents the results of accuracy evaluations of Ikonos orthophotos, stereo pairs and triangulation block adjustments. Ikonos image products were compared to a globally distributed set of Ground Control Points (GCPs) and the calculated geometric accuracy was found to be better than the published Ikonos specifications. This paper also describes some important matters relating to sensor geometry models and pays special attention to a replacement math model called the rational polynomial coefficient (RPC) model. These coefficients were used to model Ikonos stereo images, and a special adjustable form of the RPC rational function was used in multi-strip block adjustments. Comparisons to ground control and the rigorous Ikonos geometry model are provided.
Conference Committee Involvement (3)
Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XI
28 March 2005 | Orlando, Florida, United States
Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X
12 April 2004 | Orlando, Florida, United States
Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery IX
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