This is my page on wavelets, which are neat little functions that oscillate and do really neat things.
Click here to read my paper that I wrote on lossless wavelet-based image compression (WordPerfet for Windows format).
In the document, I discuss the test images that I used; to download those, click on one of the following:
Test set 1
Test set 2
Test set 3
Test set 4
You may also click here to see an article I wrote on wavelets for an electronic magazine called CScene. It is based on the paper, but is probably a little easier to follow.