How can i convert some of images Matrices to be square symmetric Matrices?

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Aya Ahmed
Aya Ahmed 2020-3-30
评论： Aya Ahmed 2020-4-5
Plz help ..How can i convert some of images Matrices to be square symmetric Matrices To apply PCA on them ,, because principal component analysis is performed on a square symmetric matrix.

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Image Analyst
Image Analyst 2020-4-2
Matrices do not need to be square to do PCA on them. Attached is an example where I do PCA on the 3-D color gamut of an RGB image. Plus another example on a point cloud.
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Aya Ahmed
Aya Ahmed 2020-4-5
编辑：Aya Ahmed 2020-4-5
I want to make feature extraction on some images using Fusion between Morphological features(iam macking that using matalb code and get result)+ PCA features (i cant do that any more )
I want io make:
Morphological features with 4pc containing 70 % of original image ,
Morphological features with 8pc containing 75 % of original image,
Morphological features with 16pc containing 80 % of original image,
Morphological features with 24pc containing 85 % of original image) ,
and those images were with standard dimentions 255*255 before macking to them rotated cropped. after making rotate and crop, they become like this image with different dimentions in wide and high.
how can i make pca matlab code to do that please ??
i resarched about pca alot to make that , but i cant reach to any result , I kept looking for two months in this point

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