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Updated: May 25, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
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A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

[Multispectral remote sensing image denoising based on non-local means].

Peng Liu1, Ding-Sheng Liu, Guo-Qing Li

  • 1Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China. pliu@ceode.ac.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|January 17, 2012
PubMed
Summary

This study introduces a novel non-local mean (NLM) denoising method for multispectral remote sensing images. The enhanced technique preserves spectral information better than traditional methods, improving image quality.

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Area of Science:

  • Remote Sensing
  • Image Processing
  • Computer Vision

Context:

  • Multispectral remote sensing images contain rich spectral information crucial for analysis.
  • Traditional non-local mean (NLM) denoising methods applied independently to each band can degrade this spectral information.
  • Existing denoising techniques often fail to adequately address the unique challenges of multispectral image noise.

Purpose:

  • To develop an advanced non-local mean (NLM) denoising algorithm specifically designed for multispectral remote sensing images.
  • To enhance the preservation of spectral information during the denoising process.
  • To improve the overall quality and accuracy of denoised multispectral imagery.

Summary:

  • A novel multispectral non-local mean (NLM) denoising method is proposed, modifying the traditional NLM approach.

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Last Updated: May 25, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

  • The method incorporates a weight calculation that considers all spectral channels and prioritizes patches with similar spectral features.
  • Experimental results on diverse satellite imagery demonstrate superior performance in preserving spectral fidelity, as validated by ERGAS and SAM metrics.

    • Impact:

    • The proposed NLM method significantly improves denoising performance for multispectral remote sensing data.
    • Enhanced spectral information preservation leads to more reliable analysis of land cover and other features.
    • This advancement offers a more effective tool for processing and utilizing high-quality multispectral imagery in various applications.