基于Surf特征匹配的多点光学触摸方法
首发时间:2017-05-10
摘要:目前触摸屏实现方法主要是采用红外发射对管遮挡属性实现的,该方法成本高,尤其随着面积最大,成本随之递增。本文利用摄像头采集图像,根据光学特征在一维图像中实现触摸,该方法成本低,而且不随面积增大而增大。针对多点触摸会产生鬼点问题,文中利用SURF特征匹配手掌,消除鬼点实现两点触摸。实验证明本文方法可靠,精准度满足实用要求。
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Research on multi-point optical touch based on Surf feature matching
Abstract:At present, the realization method of the touch screen is mainly realized by the infrared emission on the tube occlusion attribute. The method is costly, especially with the largest area and the cost is increasing. In this paper, we use the camera to collect the image, according to the optical characteristics in the one-dimensional image to achieve the touch, the method is low cost, and does not increase with the area increases. For multi-touch will produce ghost point problem, the use of SURF features matching the palm of your hand, to eliminate the point to achieve two points touch. Experiments show that the method is reliable and accurate to meet the practical requirements.
Keywords: Surf Image matching Virtual touch-screen Multi-touch
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