NDLI: Automatic in-flight boresight calibration considering topography for hyperspectral pushbroom sensors

Content Provider	IEEE Xplore Digital Library
Author	Lenz, A. Schilling, H. Perpeet, D. Wuttke, S. Gross, W. Middelmann, W.
Copyright Year	2014
Abstract	This paper suggests a method for automatic in-flight boresight calibration of pushbroom scanner images, using an on-line system with broadband data downlink and near realtime georeferencing of the pushbroom image data. Georeferencing accuracy may decrease during long image acquisition flights due to instable atmospheric conditions, which may lead to geometric changes in the flight platform. Orthorectification of (hyperspectral) pushbroom scanner data demands the knowledge of the extrinsic orientation parameters for every exposure. The most crucial parameters for the transformation of the pose obtained by the inertial navigation system (INS) into the projection center of the imaging sensor are the boresight angles. Utilizing a performant ray tracing algorithm and a digital elevation model (DEM), these parameters can be estimated even while flying in uneven and uninhabited areas. Tie points for solving an extended collinear equation are extracted automatically by the SURF algorithm.
Sponsorship	IEEE Geosci. Remote Sens. Soc.
Starting Page	2981
Ending Page	2984
File Size	479415
Page Count	4
File Format	PDF
ISBN	9781479957750
DOI	10.1109/IGARSS.2014.6947103
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-07-13
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Hyperspectral imaging Strips Sensor systems Three-dimensional displays image registration On-line boresight calibration pushbroom sensor hyperspectral imaging remote sensing
Content Type	Text
Resource Type	Article

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