ABSTRACT
Sensor fusion refers to the use of multiple sensor readings to infer a single piece of information. Inputs may be received from a single sensor over a period of time. They may also be received from multiple sensors of the same or different types. This is a very important technology for radiology and remote sensing applications. In medical imaging alone, the number of papers published per year has increased from 20 in 1990 to about 140 in 2001.1 Registering elastic images and nding theoretical bounds for image registration are particularly active research topics.
