is there a version of Principle Component Analysis for images?

2 views (last 30 days)
hello everybody, i want to ask about Principle Component Analysis, a tool used for data analysis
is there a version for PCA that is used for analysis the images?
and i want a source code and some examples for that
thanks for your help

Answers (3)

Sean de Wolski
Sean de Wolski on 15 Apr 2013
doc pca
edit pca
Mohamed Moawed
Mohamed Moawed on 15 Apr 2013
i = imread ('pout.tif'); x = i( : ); y = princomp(x); x = im2double (x); y = princomp(x); imshow (y)
i get no output!!!
what is the wrong here

Sign in to comment.

Adam Filion
Adam Filion on 15 Apr 2013
I don't know much PCA myself, but I know we have some built-in tools in Statistics and Wavelet toolboxes that may be of use:
There are also a number of entries on the File Exchange for PCA:

Image Analyst
Image Analyst on 15 Apr 2013
The most famous application of PCA to images is eigenfaces: You can essentially construct any face image by a weighted sum of eigenface (PCA) images.
Mohamed Moawed
Mohamed Moawed on 16 Apr 2013
i want it to Analyze some fMRI cross-sectional brain images to early diagnosis Alzahimar Disease

Sign in to comment.

Community Treasure Hunt

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

Start Hunting!

Translated by