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In-Flight CCD Distortion Calibration for Pushbroom Satellites Based on Subpixel Correlation

Leprince, Sébastien and Musé, Pablo and Avouac, Jean-Philippe (2008) In-Flight CCD Distortion Calibration for Pushbroom Satellites Based on Subpixel Correlation. IEEE Transactions on Geoscience and Remote Sensing, 46 (9). pp. 2675-2683. ISSN 0196-2892. doi:10.1109/TGRS.2008.918649.

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We describe a method that allows for accurate inflight calibration of the interior orientation of any pushbroom camera and that in particular solves the problem of modeling the distortions induced by charge coupled device (CCD) misalignments. The distortion induced on the ground by each CCD is measured using subpixel correlation between the orthorectified image to be calibrated and an orthorectified reference image that is assumed distortion free. Distortions are modeled as camera defects, which are assumed constant over time. Our results show that in-flight interior orientation calibration reduces internal camera biases by one order of magnitude. In particular, we fully characterize and model the Satellite Pour l'Observation de la Terre (SPOT) 4-HRV1 sensor, and we conjecture that distortions mostly result from the mechanical strain produced when the satellite was launched rather than from effects of on-orbit thermal variations or aging. The derived calibration models have been integrated to the software package Coregistration of Optically Sensed Images and Correlation (COSI-Corr), freely available from the Caltech Tectonics Observatory website. Such calibration models are particularly useful in reducing biases in digital elevation models (DEMs) generated from stereo matching and in improving the accuracy of change detection algorithms.

Item Type:Article
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URLURL TypeDescription
Leprince, Sébastien0000-0003-4555-8975
Avouac, Jean-Philippe0000-0002-3060-8442
Additional Information:© Copyright 2008 IEEE. Reprinted with permission. Manuscript received October 22, 2007; revised January 15, 2008. [First Published: 2008-07-25. Current Version Published: 2008-08-19] This work was supported in part by the National Science Foundation under Grant EAR-0409652 and Grant EAR-0636097, and in part by the Gordon and Betty Moore Foundation. The authors would like to thank F. Ayoub (California Institute of Technology) who integrated the calibrations described in this paper to the COSI-Corr software, and I. Barisin (Oxford University) who applied the CCD calibration to the SPOT 4 images from 2004 and 2006, then allowing us to further test the stationarity assumption of the CCD distortions. Finally, this paper has benefited from excellent suggestions and critics from Renaud Binet (CEA, France) and an anonymous reviewer. This is Caltech Tectonics Observatory contribution #81.
Group:Caltech Tectonics Observatory, Seismological Laboratory
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
Subject Keywords:Change detection, charge coupled device (CCD) distortions, ground deformations, interior orientation, orthorectification, pushbroom camera calibration, Satellite Pour l’Observation de la Terre (SPOT), subpixel correlation
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Other Numbering System NameOther Numbering System ID
Caltech Tectonics Observatory81
Issue or Number:9
Record Number:CaltechAUTHORS:LEPieeetgrs08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11939
Deposited By: Archive Administrator
Deposited On:11 Oct 2008 06:49
Last Modified:08 Nov 2021 22:23

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