CAMERA BASE TOUCH SCREEN APPARATUS AND IMAGE ACQUISITION METHOD USING THE SAME

摘要

PURPOSE: A camera-based touch screen device receiving an influence of disturbance and an image obtaining method thereof are provided to implement the operation of a touch screen device by obtaining a completed image having a clear boundary with a background image. CONSTITUTION: An acryl plate(1) is touched by a user and an infrared lighting device(2) emits infrared light to the acryl plate. A projector(4) supplies an image to the acryl plate through a diffusion film(3) and a camera(6) obtains the image of the acryl plate. A controller controls the operation of the camera and the operation of the infrared lighting device to obtain each image in an on-state and an off-state of the infrared lighting device. The controller operates a flash lighting device when the camera obtains the image in the off-state.