Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1997-03-03
1999-03-30
Saras, Steven J.
Computer graphics processing and selective visual display system
Display peripheral interface input device
345157, 345158, 382276, 348135, 348139, 348169, 395 94, G09G 500, G05B 1500, G06K 936
Patent
active
058895051
ABSTRACT:
A vision-based controller provides translational and rotational control signals to a computer or other input driven device. The controller includes a tracked object, positioned in space and having at least a first reference point and a second reference point. The tracked object is capable of three dimensional rotational and translational movement. At least one imaging device, positioned at a distance from the tracked object, generates an image of the tracked object, at plural succeeding times. A processor unit receives the image, comprised of pixel values, from the imaging device; identifies pixels corresponding to a current center of the tracked object, the first reference point and the second reference point; determines a current dimension (i.e., size or radius) of the tracked object; calculates a translational and rotational displacement of the tracked object based on the above information; and generates control signals in accordance with the transitional and rotational displacement.
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Hager Gregory Donald
Toyama Kentaro
Saras Steven J.
Vail Seth D.
Yale University
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