If you have HI-Quality Images (BIG ONES) you can use tools like QTVR Authoring Studio 2 or VRToolbox to compose images and panoramas. The final result needs some postwork and are pretty hard to use if you are not used to QTVR, but in general can haste a long work a lot. They can make opticals corrections too; so you can concentrate to "match" the colors and the patterns of the stitched images and not worry too much of the lighting differences and proportions. Nice tools if ya know how to use 'em... =) The drawback is that are pretty costly...