Automatic focusing control of a video camera for industrial and

Details Automatic focusing control of a video camera for industrial and Automatic focusing control of a video camera for industrial and

1989-07-17

1991-05-14

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 5232

Patent

active

050161105

ABSTRACT:
A video camera is used for controlling the adjustment of a manipulator unit. An object is imaged by the video camera which is optimumly focused with respect to the object as a function of the mean brightness of a predetermined image from containing the image of the object. The focusing operation is carried out on the basis of obtaining an optimum value for the mean brightness of the image elements within the predetermined image frame enclosing the object image. The manipulator unit may contain an industrial robot for selectively adjusting either one of a workpiece or a tool acting upon a workpiece. Furthermore, the manipulator unit may contain a target tracking platform for tracking a target constituting the object imaged by the video camera.

REFERENCES:
patent: 4609944 (1986-09-01), Nakada et al.
patent: 4660092 (1988-04-01), Nutting
I. Plander, "Trends in the Development of Sensor Systems and Their Use in Some Technological Areas", published in ROBOTICS, vol. 3, No. 2, pp. 157 to 165, published by Elsevier Science publishers, B.V. Amsterdam, Jun. 1987.
Research Disclosure entitled "Brightness-Dependent Focusing Aid for a Manually Focused Video Camera", published in Research Disclosure, No. 288, pp. 215 to 217, Apr. 1988.

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