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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Detecting Deterministic Targets by Combination of Polarimetric Fork and Cloude-Pottier Decomposition for Polarimetric Synthetic Aperture Radar Imagery
verfasst von : Sheng Sun, Zhijia Xu, Taizhe Tan
Erschienen in: Image and Graphics
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Abstract
For detecting the deterministic targets in polarimetric synthetic aperture imagery, an improved method is suggested in this paper. A concise introduction is put forward about the principle of detecting single targets using polarimetric fork at first. The first drawback of the classic method is that the threshold of coherence can not be automatically obtained. The rest of drawback of the classic method is that diverse scattering mechanisms share a same threshold. A revised schema using Cloude-Pottier decomposition is suggested. The distribution of entropy value of Cloude-Pottier decomposition is used to calculate threshold. While a coarse classification is done on the image data and this procedure can be employed to obtain the threshold of various scattering mechanisms. An experiment is put into practice for measuring the validity of detection. The new proposed method outperforms the classic method via the experiment.