I wrote this application when I was a collegian and had a midterm project about 3D stereoscopic pictures with the Anaglyph technique. Therefore you should use 3D Anaglyph glasses to look at the object at a correct 3D outside the monitor. if use Anaglyph glasses with good precision lenses, you may try to touch objects with your fingers.
You can find more information about Anaglyphic pictures here
Download: 3DAnaglyph source