Motion Tracking Using Digitized Motion Video
Original Publication Date: 1988-Jul-01
Included in the Prior Art Database: 2005-Feb-15
This article describes a technique for detecting and following motion in a sequence of digitized video frames. The technique presumes a single area of motion against an otherwise still background, as would exist with a single person in front of a camera. The output of a video camera with a fixed field of view can be fed into hardware which captures and digitizes the picture element (pel) luminance values in successive still frames. It may be desirable to show only a window in the field of view on a display while making the remainder of the display available for other uses. For example, the window may be a head and shoulders view of a speaker while the remainder of the display area consists of presentation material that the speaker is talking about. Speakers tend to move about as they speak.