forum.alglib.net

ALGLIB forum
It is currently Thu Mar 28, 2024 8:47 am

All times are UTC


Forum rules


1. This forum can be used for discussion of both ALGLIB-related and general numerical analysis questions
2. This forum is English-only - postings in other languages will be removed.



Post new topic Reply to topic  [ 1 post ] 
Author Message
 Post subject: Multilayer RBF compression
PostPosted: Tue Nov 12, 2013 3:57 pm 
Offline

Joined: Tue Nov 12, 2013 3:49 pm
Posts: 2
Hello,

when I use the ALGBLIB rbf-ml algorithm to approximate a 128x128 pixel image, I get more non-zero elements than there are pixels.
I thought that the hierarchical model tried to fit the mimimum amount of required basis functions. Is it possible to use ALGLIB to perform this kind of image compression?


PS: If I manually select a random subset of the pixels (say 10%) as initial centers, the reconstruction is far worse than with methods like Residual Subsampling. (http://www.sciencedirect.com/science/article/pii/S0898122107000454)

Thanks,
Jeroen


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 52 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group