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Mixed Noise Reduction

version 1.2 (553 KB) by

This code reduces mixed noise from hyperspectral images using spatio-spectral total variation

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Thank you for downloading our code for hyperspectral denoising.
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What this code do :
This code demonstrates Hyperspectral denoising algorithm to remove mixed noise.
This code implements algorithm published in following papger:
Title : Hyperspectral Image Denoising using Spatio-Spectral Total Variation
Authors : Hemant Kumar Aggarwal, Angshul Majumdar
Journal : IEEE Geoscience and Remote Sensing Letters (LGRS), 2016

Noise can include: line strips, Gaussian noise and impulse noise.
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It solves following optimization problem :

min_{X,S} || Y-X-S||_F + lmabda || S||_1 + mu ||Dh*X*D||_1 + mu ||Dv*X*D||_1

X : Hyperspectral image in matrix form (pixels x bands)
S : Sparse noise. It can be mixture of impulse noise and line strips.
Y : Noisy Image.
D : One dimensional finite differencing operator.
Dh, Dv : Two dimensional horizontal and vertical finite difference operators.

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How to Run this code :

Just run the "demo.m" file by keeping all three files (demo.m, funSSTV.m, WDCimage.mat) in one folder.
It will show original image, noisy image and denoised image in the output.
It also gives resulting image PSNR value.

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File Description :

demo.m : Simply run this file to see how the code works. It is demo file for funSSTV.
funSSTV.m : It is the main function which solves above problem using split-Bregman technique.
WDCimage.mat : This is the portion of Washington DC mall image available for free download from here:
link: https://engineering.purdue.edu/%7ebiehl/MultiSpec/hyperspectral.html
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Contact Information:

This code is released just to promote reproducible research and is not very robust.
If you face difficulty in running this code then please feel free to contact us.

Contact Name : Hemant Kumar Aggarwal
Email : jnu.hemant@gmail.com

Comments and Ratings (5)

chaks

chaks (view profile)

Liu Wen

@Dan : I apologizes. Function opTV1 is now included.

Dan

Dan (view profile)

missing function opTV1 in funSSTV

Updates

1.2

Code description and demo.m function updated. Reference to corresponding research paper is given.

1.1

Some comments are added for better read-ability and some parameter values are updated.

1.1

more comments has been inserted for better readability. Some parameter settings are also updated.

1.1

A missing function in the function "funSSTV.m" is now included.

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