Distance determination and virtual environment creation...

Details Distance determination and virtual environment creation... Distance determination and virtual environment creation...

2007-09-24

2009-06-23

Tarcza, Thomas H (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S004010, C356S004100, C356S005010

Reexamination Certificate

active

07551266

ABSTRACT:
A data processing system, computer implemented method, and computer program product code determines distances to an object. Computer generated environments can be calculated therefrom. A light source is focused on an object at an unknown distance from an imaging device, creating a point-of-light. The imaging device, focused on a focal plane at a second location, records an out-of-focus image of the point-of-light at the first distance. From the out-of-focus image, the diameter of a circle of confusion for the point-of-light is identified. The distance between the object and the imaging device is then calculated from the circle of confusion.

REFERENCES:
patent: 4647193 (1987-03-01), Rosenfeld
patent: 6618123 (2003-09-01), Uomori et al.
patent: 2005/0206874 (2005-09-01), Dougherty

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