四路摄像头协同的多重触控系统

A Multi-touch System Using Four Cameras

为解决多重触控系统中多触点遮挡问题,提出一个基于四路摄像头协同工作的多重触控系统,其中包括硬件层、图像处理层、图像理解层和应用层.硬件层由四路摄像头与多个红外二极管围成的矩形边框组成;图像处理层完成图像的获取和触点检测;图像理解层实现触点的定位与跟踪;应用层完成与具体应用基于手势的交互.图片管理应用实验结果表明,该系统能实现基于多指的复杂操作,在公共信息查询、指挥决策等领域具有很好的应用前景.

To tackle the occlusion problem of multiple touches in multi-touch systems, a multi-touch system with four collaborative cameras is proposed, which includes four different layers, a hardware layer, an image processing layer, an image interpretation layer and an application layer. The hardware layer is a low-cost and scalable platform composed of four cameras, a rectangle frame and many infrared light-emitting diodes stationed along the frame. The image processing layer captures images and detects touches. The image interpretation layer locates and tracks touches. The application layer interacts with specific applications by gestures. An example application of picture management, which involves complex manipulations, shows that our multi-touch system is able to be used in a variety of applications such as information query, command and control, etc.