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Proceedings Paper

An information system for target recognition
Author(s): Tobias Horney; Jorgen Ahlberg; Christina Gronwall; Martin Folkesson; Karin Silvervarg; Jorgen Fransson; Lena Klasen; Erland Jungert; Fredrik Lantz; Morgan Ulvklo
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Paper Abstract

We present an approach to a general decision support system. The aim is to cover the complete process for automatic target recognition, from sensor data to the user interface. The approach is based on a query-based information system, and include tasks like feature extraction from sensor data, data association, data fusion and situation analysis. Currently, we are working with data from laser radar, infrared cameras, and visual cameras, studying target recognition from cooperating sensors on one or several platforms. The sensors are typically airborne and at low altitude. The processing of sensor data is performed in two steps. First, several attributes are estimated from the (unknown but detected) target. The attributes include orientation, size, speed, temperature etc. These estimates are used to select the models of interest in the matching step, where the target is matched with a number of target models, returning a likelihood value for each model. Several methods and sensor data types are used in both steps. The user communicates with the system via a visual user interface, where, for instance, the user can mark an area on a map and ask for hostile vehicles in the chosen area. The user input is converted to a query in ΣQL, a query language developed for this type of applications, and an ontological system decides which algorithms should be invoked and which sensor data should be used. The output from the sensors is fused by a fusion module and answers are given back to the user. The user does not need to have any detailed technical knowledge about the sensors (or which sensors that are available), and new sensors and algorithms can easily be plugged into the system.

Paper Details

Date Published: 12 April 2004
PDF: 13 pages
Proc. SPIE 5434, Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2004, (12 April 2004); doi: 10.1117/12.540968
Show Author Affiliations
Tobias Horney, Swedish Defence Research Agency (Sweden)
Jorgen Ahlberg, Swedish Defence Research Agency (Sweden)
Christina Gronwall, Swedish Defence Research Agency (Sweden)
Martin Folkesson, Swedish Defence Research Agency (Sweden)
Karin Silvervarg, Swedish Defence Research Agency (Sweden)
Jorgen Fransson, Swedish Defence Research Agency (Sweden)
Lena Klasen, Swedish Defence Research Agency (Sweden)
Erland Jungert, Swedish Defence Research Agency (Sweden)
Fredrik Lantz, Swedish Defence Research Agency (Sweden)
Morgan Ulvklo, Swedish Defence Research Agency (Sweden)

Published in SPIE Proceedings Vol. 5434:
Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2004
Belur V. Dasarathy, Editor(s)

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