Camera Tracking Systems
There are many different ways to approach the recovery of a camera position in three dimensional space. Most modern methods use the information presented from the scene’s two-dimensional projection on the image plane (screen), as opposed to using mechanical devices controlling the live-action camera’s motion. The final system that is illustrated in this paper is a piece of software which manipulates information given by the user and from a tracking program (which is also outlined in this paper). The tracking program determines the concurrent positions of reference points, on the image plane, that make up a recognisable feature. The basic feature that is being tracked in this system is a set of three points, on a planar surface, which define two perpendicular, intersecting lines (such as the top and side edges of a window or poster). This means that only three points need be tracked by the computer.