Video camera system which automatically follows subject changes

Details Video camera system which automatically follows subject changes Video camera system which automatically follows subject changes

1996-12-11

1998-09-22

Faile, Andrew

Television

Camera, system and detail

Optics

348169, H04N 5225

Patent

active

058121935

ABSTRACT:
A video camera system can suitably track a moving object without influence of other objects outside the desired image. Detection feature patterns are formed after brightness and hue frequency feature data are obtained on the basis of image information of the detection measurement frame. The position of detection measurement frame having a feature pattern with the largest similarity to the standard feature pattern obtained from the standard measurement frame is determined. An imaging condition of a television camera is controlled on the basis of the position information of the detection measurement frame in order to attain a video camera system enabling to suitably track the object motion. Further, a video camera system can obtain a face image of constantly a same size with a simple construction. An area of the face image on the display plane is detected as the detected face area, and by comparing this with a standard face area, zooming-processing is performed such that the difference becomes 0. Thus, it is unnecessary to use the method of a distance sensor, etc., and a video camera system with a simple construction can be obtained.

REFERENCES:
patent: 4987482 (1991-01-01), Imai et al.
patent: 5012522 (1991-04-01), Lambert
patent: 5196929 (1993-03-01), Miyasaka
patent: 5355163 (1994-10-01), Tomitaka
patent: 5430809 (1995-07-01), Tomikata

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