I worked on the BigBlobby graphical user interface (GUI) and have a couple of notes to add to Len’s post above.
1. The main reason for putting a Qt GUI in front of CCV is so that the camera and processed images can be made much larger by simply expanding the window to be full screen. If you are playing around with CCV blob detection settings while looking at a second monitor located several feet away from your touch table, the larger images might be quite helpful. The current CCV graphical user interface, which is written in GLUT, cannot be resized, as GLUT is mainly intended for simple tutorials for the OpenGL library and does not support automatic resizing of windows (i.e., the size of the CCV GUI window and its images are hard-coded). Besides, the Qt GUI library has much nicer slider and spin box controls than GLUT.
2. BigBlobby is free open source code (Lesser General Public License), so anybody who wants to play around with it and modify it is totally free to do so. You can download the source code as a zip file from http://code.google.com/p/bigblobby/
3. The latest version of CCV, version 1.5, now supports fiducials and multicamera stiching. However, as Len noted, BigBlobby was written for CCV version 1.3. Therefore, BigBlobby does not support these latest hot features. If there is any interest in it, I may place BigBlobby in front of CCV version 1.5. I have some other projects I need to finish up first, so if anybody feels motivated to put the BigBlobby GUI in front of CCV version 1.5, please feel free to jump in and do so.