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Interactive projection systems based on CCD/CMOS have been greatly developed in recent years for their non-contact sensing type. However, the location accuracy and tracing speed are limited by the resolution and frame rate of the CCD/CMOS. In this paper, we introduced a new type of non-contact interactive projection system based on a two-dimensional position sensitive detector (PSD). By using the...
An economical large area touch panel was presented. Through a new type of optical path constituted by specially arranged mirrors and other optical devices, the one-dimensional imaging of an object on top of the touch panel surface can be captured by one-dimensional optical sensors such as CCD, CMOS or PSD and its position can be located. Simple optical structure, less component and improved processing...
With the great advantages of interactive projection technology, the new optical-electronic human-computer interactive large screen display system has been paid more and more attention. In this paper, the approach with a new optical structure based on linear detectors has been presented. This system consists of computer, projector, camera and digital pen, and the camera uses two linear detectors to...
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