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Proceedings Paper

Automated motion detection from space in sea surveilliance
Author(s): Elisavet Charalambous; Junichi Takaku; Pantelis Michalis; Ian Dowman; Vasiliki Charalampopoulou
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Paper Abstract

The Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) carried by the Advanced Land-Observing Satellite (ALOS) was designed to generate worldwide topographic data with its high-resolution and stereoscopic observation. PRISM performs along-track (AT) triplet stereo observations using independent forward (FWD), nadir (NDR), and backward (BWD) panchromatic optical line sensors of 2.5m ground resolution in swaths 35 km wide. The FWD and BWD sensors are arranged at an inclination of ±23.8° from NDR. In this paper, PRISM images are used under a new perspective, in security domain for sea surveillance, based on the sequence of the triplet which is acquired in a time interval of 90 sec (45 sec between images). An automated motion detection algorithm is developed allowing the combination of encompassed information at each instant and therefore the identification of patterns and trajectories of moving objects on sea; including the extraction of geometric characteristics along with the speed of movement and direction. The developed methodology combines well established image segmentation and morphological operation techniques for the detection of objects. Each object in the scene is represented by dimensionless measure properties and maintained in a database to allow the generation of trajectories as these arise over time, while the location of moving objects is updated based on the result of neighbourhood calculations. Most importantly, the developed methodology can be deployed in any air borne (optionally piloted) sensor system with along the track stereo capability enabling the provision of near real time automatic detection of targets; a task that cannot be achieved with satellite imagery due to the very intermittent coverage.

Paper Details

Date Published: 19 June 2015
PDF: 10 pages
Proc. SPIE 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015), 95350J (19 June 2015); doi: 10.1117/12.2193774
Show Author Affiliations
Elisavet Charalambous, ADITESS Ltd. (Cyprus)
Univ. of Cyprus (Cyprus)
Junichi Takaku, Remote Sensing Technology Ctr. of Japan (Japan)
Pantelis Michalis, Ctr. for Security Studies (Greece)
Ian Dowman, Univ. College London (United Kingdom)
Vasiliki Charalampopoulou, Geosystems Hellas (Greece)

Published in SPIE Proceedings Vol. 9535:
Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015)
Diofantos G. Hadjimitsis; Kyriacos Themistocleous; Silas Michaelides; Giorgos Papadavid, Editor(s)

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