Change detection method for intensity VHF wavelength-resolution SAR images

Gustavo Henrique Mittmann Voigt; Dimas Irion Alves; Crístian Müller; Renato Machado; Viet T. Vu; Mats I. Pettersson

doi:10.1117/12.2599952

12 September 2021 Change detection method for intensity VHF wavelength-resolution SAR images

Gustavo Henrique Mittmann Voigt, Dimas Irion Alves, Crístian Müller, Renato Machado, Viet T. Vu, Mats I. Pettersson

Proceedings Volume 11862, Image and Signal Processing for Remote Sensing XXVII; 118620P (2021) https://doi.org/10.1117/12.2599952
Event: SPIE Remote Sensing, 2021, Online Only

Abstract

This paper presents the proposal of a new change detection method for intensity VHF wavelength-resolution images. High-amplitude pixels are related to the presence of strong scatterers, resulting in high detection probability performance. However, the number of false alarms tends to be high too. In this initial study, difference images are considered to reduce the influence of the strong scatterers that are not related to targets, i.e., present in both surveillance and reference images. The proposed change detection method is based on a likelihood-ratio test, where the tested hypothesis is the bivariate exponential distribution. The derivation of the proposed likelihood test is presented. Finally, the proposed change detection method is assessed considering data measured with the CARABAS II VHF UWB SAR system. Preliminary results show that the proposed method is efficient in detecting positive changes.

Conference Presentation

Citation Download Citation

Gustavo Henrique Mittmann Voigt, Dimas Irion Alves, Crístian Müller, Renato Machado, Viet T. Vu, and Mats I. Pettersson "Change detection method for intensity VHF wavelength-resolution SAR images", Proc. SPIE 11862, Image and Signal Processing for Remote Sensing XXVII, 118620P (12 September 2021); https://doi.org/10.1117/12.2599952

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