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Simulated annealing CFAR threshold selection for South African ship detection in ASAR imagery
conference contribution
posted on 2023-05-23, 09:05 authored by Schwegmann, CP, Kleynhans, W, Brian SalmonBrian SalmonSynthetic 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.
History
Publication title
Proceedings of the International Geoscience and Remote Sensing Symposium (IGARSS)Pagination
561-564ISBN
978-147995775-0Department/School
School of EngineeringPublisher
IEEEPlace of publication
United States of AmericaEvent title
International Geoscience and Remote Sensing Symposium 2014Event Venue
Quebec, CanadaDate of Event (Start Date)
2014-07-13Date of Event (End Date)
2014-07-18Rights statement
Copyright 2014 IEEERepository Status
- Restricted