Algoritmo de Detecção de Mudanças Interativo Baseado em Pilhas de Imagens SAR Multitemporais

Pablo Kunz de Jesus, Ricardo Simão Diniz Dal Molin Jr., Marcello G. Costa, Dimas Irion Alves, Manish Sharma, Renato Machado

DOI: 10.14209/sbrt.2021.1570724307

Evento: XXXIX Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2021)

Keywords: Change detection algorithm image stacks clutter suppression

Abstract

This paper presents a change detection (CD) technique for synthetic aperture radar (SAR) image stacks. The algorithm considers three SAR images as input. One image is a common reference for the other two. One image pair is used for detecting targets of interest, while the other assists in clutter suppression. The proposed method explores a control chart to limit the range of amplitudes possibly associate with changes of interest, removing the complexity of the constant false alarm rate (CFAR) filter considered in classical LRT algorithms. For the experimental tests, it was considered ultrawideband (UWB) very high frequency (VHF) SAR images. Due to their temporal stability, typical in this type of SAR image, clutter could be successfully suppressed, favoring reducing the false alarm rate and keeping a high probability of detection.

Download