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|Title:||Estimating the Velocity and Direction of Moving Targets using a Single Optical VHR Satellite Image|
|Authors:||PESARESI MARTINO; K.H. Gutjahr; PAGOT ELODIE|
|Citation:||INTERNATIONAL JOURNAL OF REMOTE SENSING vol. 29 no. 4 p. 1221-1228|
|Publisher:||TAYLOR & FRANCIS LTD|
|Type:||Articles in Journals|
|Abstract:||The present contribution demonstrates the feasibility and explores the limits of a new method for estimating the velocity and direction of moving targets using a single, optical, very high resolution (VHR) satellite sensor dataset. The method is based on the fact that there is a time lag between the data collection of the panchromatic (PAN) and multi-spectral (MS) sensors in the same VHR platform. Consequently, it is developed around three main steps: i) accurate image-to-image registration between MS and PAN images with a sub-pixel displacement error, ii) precise location of barycentre of targets by mathematical morphology-based image transforms, and iii) estimation of the ground velocity and direction of the target using the MS-PAN spatial displacement, the known time lag, and an image-to-ground transformation taking into account the interior and exterior orientation of the sensors and a terrain height reference. An evaluation of the reliability and limits of the proposed method based on the observation of the results regarding manually-selected moving and non-moving targets is included.|
|JRC Institute:||Institute for the Protection and Security of the Citizen|
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