System and method for transforming an ordinary computer...

Details System and method for transforming an ordinary computer... System and method for transforming an ordinary computer...

2008-03-11

2008-03-11

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S178000, C345S179000, C345S180000, C348S095000, C348S744000, C348S745000, C348S747000, C348S826000, C382S168000, C382S169000

Reexamination Certificate

active

07342572

ABSTRACT:
A system and method for turning a regular computer monitor screen into a touch screen using an ordinary camera. It includes an image-screen mapping procedure to correct for the non-flatness of the computer screen. It also includes a segmentation method to distinguish the foreground, for example an indicator such as a finger, from the background of a computer screen. Additionally, this system and method includes a robust technique of finding the tip point location of the indicator (such as the finger tip). The screen coordinates of the tip point are then used to control the position of the system indicator.

REFERENCES:
patent: 5483261 (1996-01-01), Yasutake
patent: 5936615 (1999-08-01), Waters
patent: 6512507 (2003-01-01), Furihata et al.
patent: 6774889 (2004-08-01), Zhang et al.
patent: 2002/0036617 (2002-03-01), Pryor

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