双相机多点触控系统

Multi-touch System Using Two Cameras

为解决多点触控系统花费高、分辨率不足、体积庞大、容易受环境光影响等问题,提出了一种采用双摄像机的多点系统,通过多手指的点击和移动动作实现人机交互。该系统以双摄像机监控交互平面上的手指输入,利用图像处理技术得到触点在双相机中的位置,再结合标定数据进行差值计算得到触点的屏幕坐标,通过对触点的跟踪得到多点数据。图片浏览互动平台的实验结果表明,本文所提出的系统可用于多点触摸,并且具有很好的精确度。

To tackle the problems of high cost, low resolution, bulk mass and easily being affected by ambient light of Multi-touch system, a dual-camera multi-touch system was proposed which could achieve human-computer interaction by simply clicking and moving the fingers on the interaction surface. The proposed system detected the input of fingers by two cameras, obtained the positions of Multi-points in two cameras by image processing, and calculated the coordinates in screen coordinate by combining with calibration data, and finally obtained the Multi-points data by tracking the touch points. The experimental results of photo interactive platform show that this system can be used for Multi-touch with good accuracy.