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Remote sensing image denoising application by generalized morphological component analysis

Authors
Journal
International Journal of Applied Earth Observation and Geoinformation
0303-2434
Publisher
Elsevier
Volume
33
Identifiers
DOI: 10.1016/j.jag.2014.04.004
Keywords
  • Remote Sensing Image Denoising
  • Generalized Morphological Component Analysis
  • Blind Source Separation
  • Iterative Thresholding Strategy
  • Visual Effect
  • Quantitative Assessment
Disciplines
  • Computer Science
  • Mathematics

Abstract

Abstract In this paper, we introduced a remote sensing image denoising method based on generalized morphological component analysis (GMCA). This novel algorithm is the further extension of morphological component analysis (MCA) algorithm to the blind source separation framework. The iterative thresholding strategy adopted by GMCA algorithm firstly works on the most significant features in the image, and then progressively incorporates smaller features to finely tune the parameters of whole model. Mathematical analysis of the computational complexity of GMCA algorithm is provided. Several comparison experiments with state-of-the-art denoising algorithms are reported. In order to make quantitative assessment of algorithms in experiments, Peak Signal to Noise Ratio (PSNR) index and Structural Similarity (SSIM) index are calculated to assess the denoising effect from the gray-level fidelity aspect and the structure-level fidelity aspect, respectively. Quantitative analysis on experiment results, which is consistent with the visual effect illustrated by denoised images, has proven that the introduced GMCA algorithm possesses a marvelous remote sensing image denoising effectiveness and ability. It is even hard to distinguish the original noiseless image from the recovered image by adopting GMCA algorithm through visual effect.

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