Calibration of an interactive display system

Details Calibration of an interactive display system Calibration of an interactive display system

2008-09-12

2009-12-01

Osorio, Ricardo L (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S173000

Reexamination Certificate

active

07626578

ABSTRACT:
In an interactive display system, a projected image on a display surface and a vision system used to detect objects touching the display surface are aligned, and optical distortion of the vision system is compensated. Also, calibration procedures correct for a non-uniformity of infrared (IR) illumination of the display surface by IR light sources and establish a touch threshold for one or more uses so that the interactive display system correctly responds to each user touching the display surface. A movable IR camera filter enables automation of the alignment of the projected image and the image of the display surface and help in detecting problems in either the projector or vision system.

REFERENCES:
patent: 7379562 (2008-05-01), Wilson
patent: 7411575 (2008-08-01), Hill et al.
patent: 7411584 (2008-08-01), Hill et al.
patent: 2003/0111588 (2003-06-01), Chen
patent: 2004/0183787 (2004-09-01), Geaghan et al.
patent: 2005/0146513 (2005-07-01), Hill et al.
patent: 2005/0190162 (2005-09-01), Newton
patent: 2005/0226505 (2005-10-01), Wilson

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