Thread Subject: PCA compression and decompression

Hello everybody,

can please someone provide me by easy pca compression/decompression function (of picture f.e.) or sourcecode from where I can easily learn of how to compress files with using more principal components?

I am interested to use sth like this (just PCA part)
http://www.iitk.ac.in/karmaa/DownloadTools/MCIT_DataCompressionProject/User_Manual_Image_Compression.html

I want to write my own compression code using
http://matlabdatamining.blogspot.com/2010/02/putting-pca-to-work.html

Thank you. Regards, Martin