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SAR Image Segmentation Based on Level Set With Stationary Global Minimum

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3 Author(s)
Yongmin Shuai ; Dept. of Commun. Eng., Wuhan Univ., Wuhan ; Hong Sun ; Ge Xu

In this letter, we propose a new level-set-based energy functional for the purpose of synthetic aperture radar (SAR) image segmentation into Gamma homogeneous regions. The segmentation of SAR images is a difficult problem due to the presence of speckles, which can be modeled as strong multiplicative noise. Our proposed energy functional is designed to get a stationary global minimum. As a result, the level set function that evolves by the Euler-Lagrange equation of the energy functional has a unique stationary convergence state. Moreover, it is easy to set a termination criterion on the curve evolution via a level set by using our energy functional. The experimental results on both synthetic and real SAR images demonstrate the effectiveness of our method.

Published in:

Geoscience and Remote Sensing Letters, IEEE  (Volume:5 ,  Issue: 4 )