Results 121 to 130 of about 352 (155)
Direct georeferencing of multi-line images with a general sensor model
A general sensor model for the direct georeferencing of multi-line images acquired by CCD array sensors is under development at our Institute. The model is designed for sensors carried on both spacecraft and aircraft. If the sensor position and attitude are provided by additional observations (GPS/INS), the model computes the approximations of the ...
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ABSTRACT Aim Investigate patterns of population genetic structure in Southwestern Atlantic marine fishes and evaluate how geographic range, habitat diversity, and evolutionary history shape population connectivity. Location Southwestern Atlantic, including the Caribbean, Brazilian coast, and Patagonian region, between 0°59′ N and 40°16′ S.
Glaciane Conceição Marques +4 more
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ABSTRACT Aim Understanding whether invasive species retain or shift their ecological niches has relied on scalar overlap metrics that quantify the magnitude of niche change but not its structure. Here, we test whether biological invasions involve a reorganisation of the environmental axes along which native and invasive ranges are differentiated, and ...
Kristian Miok +3 more
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This report studies a practical problem related to the use of GPS/INS technology for sensor direct georeferencing. It is a case study of a specific, yet typical, situation whre the performance of a GPS/INS was pronounced unsatisfactory for orientation of an airborne sensor.
Legat, Klaus +2 more
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CyberGeoAI For Intelligent Spatial Decision Support
ABSTRACT The evolution of spatial decision support systems (SDSS) is being rapidly shaped by the integration of Cyberinfrastructure (CI) and Geospatial Artificial Intelligence (GeoAI), collectively referred to as CyberGeoAI. The rise of big data, complex decision environments, and computing power gives opportunities for advanced tool development to ...
Zhe Zhang +11 more
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Problems in Direct-Georeferencing by INS/DGPS in the Airborne Environment
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Direct georeferencing of airborne pushbroom images
Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an, 2015Direct georeferencing (DG) for orthoimage production based on collinearity equations has emerging as a standard photogrammetric operation. In this paper, the basic idea of DG is realized and refined with 19 self-calibration parameters for rectifying airborne pushbroom hyperspectral images collected using the intelligent spectral imaging system (ISIS ...
Ching-Kuo Yeh, Victor J.D. Tsai
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Theory and reality of direct georeferencing in national coordinates
ISPRS Journal of Photogrammetry and Remote Sensing, 2008This paper focuses on the transformation of the sensor's exterior orientation parameters obtained by direct georeferencing (DG) to national reference frames and their subsequent projection for mapping purposes. The required steps are explained and the emphasis is put on the minimization of distortions arising from the curvature of the earth and the ...
Jan Škaloud
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Approximate direct georeferencing in national coordinates
ISPRS Journal of Photogrammetry and Remote Sensing, 2006Abstract Direct georeferencing has gained an increasing importance in photogrammetry and remote sensing. Thereby, the parameters of exterior orientation (EO) of an image sensor are determined by GPS/INS, yielding results in a global geocentric reference frame.
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Accurate direct georeferencing of aerial imagery in national coordinates
ISPRS Journal of Photogrammetry and Remote Sensing, 2015In aerial photogrammetry, data products are commonly needed in national coordinates, and, in practice, the georeferencing is often performed in the required national map projection frame directly. However, as a map projection frame is not Cartesian, some additional corrections are necessary in the georeferencing process to take account of various map ...
Yongjun Zhang +2 more
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