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Simulated annealing CFAR threshold selection for South African ship detection in ASAR imagery

Citation

Schwegmann, CP and Kleynhans, W and Salmon, BP, Simulated annealing CFAR threshold selection for South African ship detection in ASAR imagery, Proceedings of the International Geoscience and Remote Sensing Symposium (IGARSS), 13-18 July 2014, Quebec, Canada, pp. 561-564. ISBN 978-147995775-0 (2014) [Refereed Conference Paper]

Copyright Statement

Copyright 2014 IEEE

DOI: doi:10.1109/IGARSS.2014.6946484

Abstract

Synthetic Aperture Radar images are able to detect ships that would be hidden to tradition ship tracking methods due to their transponders being turned off. Using a SAR image as input, the CFAR method can highlight these ships given a correctly chosen threshold value. Typically, the threshold value is chosen as a single floating value for all positions creating a flat threshold plane. This study introduces a novel method of creating a threshold plane which is adapted using Simulated Annealing. This non-flat threshold allows different areas of the image to have different threshold values thereby improving the overall performance of the ship detection system. It was found in our experiments that the proposed method improves upon the false alarm rate of the flat threshold plane CFAR method whilst keeping a similar level of detection accuracy.

Item Details

Item Type:Refereed Conference Paper
Keywords:simulated annealing, Constant False Alarm Rate, Synthetic Aperture Radar
Research Division:Engineering
Research Group:Electrical and Electronic Engineering
Research Field:Signal Processing
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Salmon, BP (Dr Brian Salmon)
ID Code:92406
Year Published:2014
Deposited By:Engineering
Deposited On:2014-06-17
Last Modified:2018-04-05
Downloads:0

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