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Proceedings Paper

SLATE: scanning laser automatic threat extraction
Author(s): David J. Clark; Shaun L. Prickett; Ashley A. Napier; Matthew P. Mellor
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Paper Abstract

SLATE is an Autonomous Sensor Module (ASM) designed to work with the SAPIENT system providing accurate location tracking and classifications of targets that pass through its field of view. The concept behind the SLATE ASM is to produce a sensor module that provides a complementary view of the world to the camera-based systems that are usually used for wide area surveillance. Cameras provide a hi-fidelity, human understandable view of the world with which tracking and identification algorithms can be used. Unfortunately, positioning and tracking in a 3D environment is difficult to implement robustly, making location-based threat assessment challenging. SLATE uses a Scanning Laser Rangefinder (SLR) that provides precise (<1cm) positions, sizes, shapes and velocities of targets within its field-of-view (FoV). In this paper we will discuss the development of the SLATE ASM including the techniques used to track and classify detections that move through the field of view of the sensor providing the accurate tracking information to the SAPIENT system. SLATE’s ability to locate targets precisely allows subtle boundary-crossing judgements, e.g. on which side of a chain-link fence a target is. SLATE’s ability to track targets in 3D throughout its FoV enables behavior classification such as running and walking which can provide an indication of intent and help reduce false alarm rates.

Paper Details

Date Published: 24 October 2016
PDF: 15 pages
Proc. SPIE 9995, Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XII, 99950S (24 October 2016); doi: 10.1117/12.2241639
Show Author Affiliations
David J. Clark, Create Technologies Ltd. (United Kingdom)
Shaun L. Prickett, Create Technologies Ltd. (United Kingdom)
Ashley A. Napier, Create Technologies Ltd. (United Kingdom)
Matthew P. Mellor, Create Technologies Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 9995:
Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XII
Douglas Burgess; Gari Owen; Henri Bouma; Felicity Carlysle-Davies; Robert James Stokes; Yitzhak Yitzhaky, Editor(s)

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