期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2015
卷号：4
期号：7
页码：13251-13255
出版社：IJECS
摘要：We propose a novel interactive projection system (IPS), which enables bare-finger touch interaction on regular planar surfaces (e.g.,walls, tables), with only one standard camera and one projector. The challenge of bare-finger touch detection is recovering thetouching information just from the 2-D image captured by the camera. In our method, the graphical user interface (GUI) button isprojected on the surface and is distorted by the finger when clicking it, and there is a significant positive correlation between thebutton’s distortion and the finger’s height to the surface. Therefore, we propose a novel, fast, and robust algorithm, which takesadvantage of the button’s distortion to detect the touch action. The existing keyboards used keys based keyboard for typing on thecomputer. These keyboards are working on the mechanical push principle. But for the small devices like mobile phones and tablets itis impossible to carry big keyboard with them. The touchscreen based keyboards available in such devices are very inconvenient towrite because the size of people finger is big and the size of the keys on the touch screen is small. So typing work on the small devicesis not convenient and on computer our fingers get pain after doing long time typing work because of mechanical vibration of thekeys.
