Compression Manager

sets up all the compression information for a SAT request, and offers a preview of what to expect

Using the compression manager is in a sense the same as editing the request records in a text editor. But GUI is fancier

Preview feature is important: compression is almost always lossy, so the user has to have an option to balance size/quality

It's the picture of the old version, the new version in a moment

At present, the compression manager uses a few implementations of a modified Laplacian pyramid compression method (multi-resolutional analysis with overcomplete frames) discussed in papers presented at Data Compression Conferences. See http://okmij.org/ftp/ for the complete set of references to the papers.

Note, the compression is almost always lossy. To give the user an idea how well the delivered image would look like and whether important features the user is looking for would be preserved, the compression manager loads up some (relatively small) sample image and displays it along with the compressed and decompressed picture, using the parameters the user has set up.

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