Camera-based touch system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 6, 2010
Grant Date -
Apr 14, 2005
app pub date -
Jul 5, 2001
filing date -
Jul 5, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A camera-based touch system (50) includes a passive touch surface (60) and at least two cameras (63) associated with the touch surface. The at least two cameras (63) have overlapping fields of view (FOV) encompassing the touch surface. The at least two cameras (63) acquire images of the touch surface from different locations and generate image data. A processor (54) receives and processes image data generated by the at least two cameras to determine the location of the pointer relative to the touch surface when the pointer is captured in images acquired by the at least two cameras. Actual pointer contact with the touch surface and pointer hover above the touch surface can be determined.
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