Video camera system and automatic tracking method therefor

Details Video camera system and automatic tracking method therefor Video camera system and automatic tracking method therefor

1996-09-26

1998-05-19

Tung, Bryan S.

Television

Special applications

Observation of or from a specific location

348169, 348700, H04N 718

Patent

active

057542252

ABSTRACT:
The invention provides a video camera system such as a supervisory system wherein the amount of calculation for motion detection is reduced to reduce the required capacity for hardware. An output of a video camera is sent to a data processing apparatus. In the data processing apparatus, an evaluation value calculation block extracts a video signal of each of a plurality of areas and calculates an evaluation value of the image for each of the areas. Further, a microcomputer calculates a reference value based on the evaluation value obtained in an ordinary state and stores the reference value, and then compares the reference value with a current evaluation value to detect motion of the image. Further, the microcomputer controls the position of the video camera so that the area in which the motion has been detected may be positioned at a central portion of the field of view of the video camera.

REFERENCES:
patent: 3988533 (1976-10-01), Mick et al.
patent: 4198653 (1980-04-01), Kamin
patent: 5552823 (1996-09-01), Kageyama

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