Direct georeferencing of airborne pushbroom images

Autor:	Ching-Kuo Yeh, Victor J. D. Tsai
Rok vydání:	2015
Předmět:	medicine.medical_specialty Pixel Computer science business.industry General Engineering Orthophoto Hyperspectral imaging Spectral imaging Collinearity equation Photogrammetry Inertial measurement unit Global Positioning System medicine Computer vision Artificial intelligence business Remote sensing
Zdroj:	Journal of the Chinese Institute of Engineers. 38:653-664
ISSN:	2158-7299 0253-3839
DOI:	10.1080/02533839.2015.1009410
Popis:	Direct 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) scanner. Two experimental ISIS images along with in-flight global positioning systems (GPS)/inertia measurement unit (IMU) data and 40 ground control points (GCPs) were used to solve these parameters by the iterative least squares method. By applying the proposed self-calibrated DG approach, the positional error of the GCPs is dramatically reduced to the pixel level from the 10-pixel level of in-flight DG-based rectification without self-calibration. Similar results were also found for the 30 check points, whose coordinates were either measured by GPS Real-Time Kinematic, or interpolated from 5-m to 20-m digital elevation model data, even when the six lens di...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8c70fa5519d0b3e512f9241b9173ccc4 https://doi.org/10.1080/02533839.2015.1009410 Zobrazit plný text záznamu