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Sensors 2014, 14(7), 13210-13242; doi:10.3390/s140713210

Small Infrared Target Detection by Region-Adaptive Clutter Rejection for Sea-Based Infrared Search and Track

1
Yeungnam University 280 Daehak-Ro, Gyeongsan, Gyeongbuk 712-749, Korea
2
Agency for Defense Development, 111 Sunam-dong, Daejeon 305-600, Korea
*
Author to whom correspondence should be addressed.
Received: 8 May 2014 / Revised: 24 June 2014 / Accepted: 15 July 2014 / Published: 22 July 2014

Abstract

This paper presents a region-adaptive clutter rejection method for small target detection in sea-based infrared search and track. In the real world, clutter normally generates many false detections that impede the deployment of such detection systems. Incoming targets (missiles, boats, etc.) can be located in the sky, horizon and sea regions, which have different types of clutters, such as clouds, a horizontal line and sea-glint. The characteristics of regional clutter were analyzed after the geometrical analysis-based region segmentation. The false detections caused by cloud clutter were removed by the spatial attribute-based classification. Those by the horizontal line were removed using the heterogeneous background removal filter. False alarms by sun-glint were rejected using the temporal consistency filter, which is the most difficult part. The experimental results of the various cluttered background sequences show that the proposed region adaptive clutter rejection method produces fewer false alarms than that of the mean subtraction filter (MSF) with an acceptable degradation detection rate. View Full-Text
Keywords: IRST; small target; regional clutter; cloud; horizontal line; sea-glint; classification; background subtraction; temporal consistency IRST; small target; regional clutter; cloud; horizontal line; sea-glint; classification; background subtraction; temporal consistency
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Kim, S.; Lee, J. Small Infrared Target Detection by Region-Adaptive Clutter Rejection for Sea-Based Infrared Search and Track. Sensors 2014, 14, 13210-13242.

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