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

1 visualizzazione (ultimi 30 giorni)
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.

Risposte (1)

Image Analyst
Image Analyst il 2 Apr 2020
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.
  4 Commenti
Aya Ahmed
Aya Ahmed il 5 Apr 2020
Modificato: Aya Ahmed il 5 Apr 2020
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
Aya Ahmed
Aya Ahmed il 5 Apr 2020
Do you anow any another efficient method to make feature extraction ?

Accedi per commentare.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by