Principal Component Analysis for feature extraction

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farheen asdf
farheen asdf 2016-6-3
评论： Aya Ahmed 2020-4-4
Hi. I'm learning about PCA and wanted to learn how it can be used for feature extraction and if it is feasible to extract features using PCA? Also I don't understand when exactly is PCA used in image processing. From what I understand it is used to reduce the size of a dataset and then features are extracted from that dataset using some other methods such as GLCM. Am I correct?

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deepak panday
deepak panday 2018-1-10
[coff,score]=pca(data) newData = data*coff(:,1:n)
where n is number of feature to selected.

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