Application to Tectonics
In a recent paper
S. Leprince, S. Barbot, F. Ayoub and J.-P. Avouac, "Automatic, Precise, Ortho-rectification and Coregistration for satellite Image Correlation, Application to Ground Deformation Measurement", IEEE Trans. Geosc. Rem. Sens., in press, 2006
we describe how to measure static deformation from a couple of optical satellite images. There are three major issues in this process: image co-registration, stereoscopic compensation and finally cross-correlation of the two-dimensional signal.
Using SPOT 5 panchromatic imagery, we achieve a 20-80cm accurate measurement of North-South and East-West horizontal ground displacements. The compensation of stereoscopic artifacts allows us to select data with various look angles and hence provides more flexibility with available data. Result of cross-correlation is a geo-referenced image of horizontal static displacement with 180m spatial resolution. For more information and examples, visit the designated section of the Tectonics Laboratory at Caltech.
S. Leprince, S. Barbot, F. Ayoub and J.-P. Avouac, "Automatic, Precise, Ortho-rectification and Coregistration for satellite Image Correlation, Application to Ground Deformation Measurement", IEEE Trans. Geosc. Rem. Sens., in press, 2006
we describe how to measure static deformation from a couple of optical satellite images. There are three major issues in this process: image co-registration, stereoscopic compensation and finally cross-correlation of the two-dimensional signal.
Using SPOT 5 panchromatic imagery, we achieve a 20-80cm accurate measurement of North-South and East-West horizontal ground displacements. The compensation of stereoscopic artifacts allows us to select data with various look angles and hence provides more flexibility with available data. Result of cross-correlation is a geo-referenced image of horizontal static displacement with 180m spatial resolution. For more information and examples, visit the designated section of the Tectonics Laboratory at Caltech.