Smart Technologies Ulc

Yunqiu (Rachel) Wang

Gerald D Morrison

Grant Howard McGibney

David Holmgren

Gregory Forrest

Alex Chtchetinine

Brian Howse

An interactive input system comprises a touch surface, and imaging system associated with the touch surface and processing structure. The imaging system comprises an optical sensor array that spans at least a portion of the area of the touch surface, and the processing structure communicates with the imaging system and analyzes images received by the imaging system to determine whether at least one pointer is near to the touch surface and the location of the at least one pointer in respect of the touch surface based at least in part on the edge sharpness of the at least one pointer.

Method for determining the location of a pointer in a pointer input region, and interactive input system executing the method

A method of inhibiting a subject's eyes from being exposed to projected light when the subject is positioned in front of a background on which an image is displayed comprises capturing at least one image of the background including the displayed image, processing the captured image to detect the existence of the subject and to locate generally the subject and masking image data used by the projector to project the image corresponding to a region that encompasses at least the subject's eyes.

Method and apparatus for inhibiting a subject's eyes from being exposed to projected light

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Calgary, Canada

Yunqiu (Rachel) Wang