Patent ID: 6433759
Filing Date: 2002-08-13
Classification: G02B,G06F,Y10S

Abstract:
A video processor, comprising:a video input configured to receive a video signal having a video amplitude; a reference input configured to receive a reference signal having a reference amplitude; an analog comparator that receives the video signal and the reference signal from the video input and the reference input, respectively, and produces a processed video signal having a first level when the reference amplitude is less than the video amplitude and a second level when the reference amplitude is greater than the video amplitude; an event processor situated to receive the processed video signal and identify at least one coordinate corresponding to a transition between the first level and the second level in the processed video signal and associate an edge of an object with the coordinate; and an edge comparator configured to compare edges of the object with edges of a stored object to determine if the object is a new object or corresponds to the stored object.