| 摘要 |
"System and method for multi-touch surface sensing by detection of light spreading through front image", more particularly developed for composing a new technology especially applied to electronic equipment that use screens with touch-screen technology; the system comprises a set of devices that includes one or more video cameras positioned over a screen or interactive surface, an image projector placed at a distance in relation to the screen or interactive surface, such projector projects an image directed to said surface; one or more video cameras are coupled with a control board, that is responsible for activating LEDs, and to a method operated by software installed in a computer or dedicated hardware; being the software responsible for applying the method for treating and processing of captured images for determining the position of multiple touches executed on the surface or screen due to the light scattering phenomenon present in the touch point occurred from the interaction of various surfaces that compose the screen with its optical medium and of its synchronism with light emitted by LEDs positioned in its edge. |
