Image stitching is a technique to combine a set of images into a larger image
by registering, warping, resampling and blending them together. A popular
application of image stitching is to create panoramas. Generally speaking,
there are two classes of methods for image stitching: direct methods and
feature-based methods. An example of direct methods is Szeliski and Shum's SIGGRAPH 1997 paper. Brown and Lowe's ICCV2003 paper,
Recognising Panoramas, is a cool example for feature-based methods.