How to remove Noise using histogram In Matlab

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Stephen john
Stephen john 2022-8-28
评论： Stephen john 2022-8-29
Hello Everyone, i hope you are doing well. I have the following data in which I have some noise. I want to remove the Noise using Histogram or any other Method. I have attached the picture below which is the noise.
How can i do that?

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回答（1 个）

Abderrahim. B
Abderrahim. B 2022-8-28
Ran in:
Hi!
Below is a workflow based on groupcounts function:
clear
load noisydata.mat
figure
subplot(211)
plot(dataset, 'o')
title("noisy data")
% Filtering based groupcounts
[GC, GR] = groupcounts(dataset) ;
denoisedData = dataset(ismember(dataset, GR(GC>10))) ; % group that has count less than 10 will be removed
subplot(212)
plot(denoisedData, 'o')
title("denoised data")
Hope this helps
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Abderrahim. B
Abderrahim. B 2022-8-29
I understand, try other filtering methods. This method - based find groups count requires to set a threshold for filtering.

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