Showing posts with label compression. Show all posts
Showing posts with label compression. Show all posts

Thursday, September 1, 2011

A13 - Image Compression

Remember the old school floppy disk? The unattractive bulky square-like storage device. Imagine this, the device only stores up to a maximum of 1.5 MB only! But it was ubiquitous many years ago that everyone was so contented with it until the arrival of new storage devices with storage size ranging from GB to TB.

With such small storage space, what can we do to maximize its usage??
--> Compression is the answer!

Compressing a file such as a document or an image means reducing its storage size for convenience purposes.

In this blog post, we will use the Principal Component Analysis to represent an image as a superposition of weighted basis images and minimize the number of features to be used to compress the image. A possible useful discussion of Principal Component Analysis method can be found in this wiki page.