An Image Denoising Method for SAR Images with Low-Sampling Measurements

Abstract

In this study, an image denoising method for the synthetic aperture radar (SAR) images is proposed. When reconstructed from low-sampling-rate measurements using a compressed sensing (CS) based method, the reconstructions still suffer from noise and aliasing for the sampling rate is much lower than the Nyquist sampling rate (15%-25%). To in future improve the reconstruction, we proposed an imaging denoising method for CS-based reconstructed SAR image. In this proposed denoising method, the pending SAR image is treated as a level set function. We design a step curvature flow function using which the aliasing and noise are eliminated and the clarity of objects of interest in the SAR images are enhanced. Simulation and experimental results illustrated that only a 20% measurement is necessary in the SAR experiment to identify the objects of interest with the proposed method.

Meeting Name

SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring (2018: Mar. 5-8, Denver, CO)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Compressed sensing; Image denoising; Image enhancement; Image reconstruction; Image sampling; Materials handling; Nondestructive examination; Numerical methods; Synthetic aperture radar; Compressive sensing; Denoising methods; Image denoising methods; Level set functions; Nyquist sampling rate; Sampling measurement; Sampling reconstruction; Synthetic aperture radar (SAR) images; Radar imaging; Image Denoising; Low-Sampling Reconstruction

International Standard Book Number (ISBN)

978-1-5106-1694-3

International Standard Serial Number (ISSN)

0277-786X

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 SPIE, All rights reserved.

Publication Date

08 Mar 2018

Link to Full Text

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