Video camera capable of automatic target tracking

Details Video camera capable of automatic target tracking Video camera capable of automatic target tracking

1995-06-02

1997-05-20

Brinich, Stephen

Television

Object tracking

Centroidal tracking

348170, H04N 718

Patent

active

056316976

ABSTRACT:
An image signal provided by an image pickup device, such as a CCD, is converted into a video signal by a signal processor. An extraction means extracts a candidate object region from the current video signal and an object region determined a certain time before by a decision means is read from a memory. For example, the decision means compares an overlapping region in which the candidate object region and the object region read from the memory overlap each other and provides a new object region a size larger than the overlapping region and replace the object region with the new object region to update the contents of the memory. On the other hand, a calculating means calculates the features of the object region including the position of the centroid of the object region on a screen. A control means, such as a microcomputer, controls the image pick up device on the basis of information about the features so that a region including the target object substantially in its central part is cut out as a video signal. Consequently, the target object can be surely tracked regardless of objects other than the target object included in a scene.

REFERENCES:
patent: 3953669 (1976-04-01), Saccomani et al.
patent: 4539590 (1985-09-01), Gage
patent: 4644405 (1987-02-01), Roy et al.
patent: 4796187 (1989-01-01), North
patent: 5007736 (1991-04-01), Daniel et al.

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