I have just posted a new article on CodeProject, entitled Automatic Image Stitching with Accord.NET. It is a demonstration of automatic image stitching by interest point matching using the Accord and AForge.NET Frameworks.
The method used is pretty classic in the computer vision literature. There are many other variations of the method with their own advantages and disadvantages, but most of them are built around the same ideas – feature detection, matching and blending. This is one of the most straightforward and free implementations available, since some of those most sophisticated methods are patented.