摘要
针对目前触摸屏必须接触式控制的缺陷,提出了一种基于图像处理技术的新型触摸屏系统。该系统以微软VX—6000USB2.0摄像头为图像传感器,由PC机采集图像序列,识别和跟踪定位激光光斑,并对用户的指点控制信息做出相应反应。阐述了该系统结构及定位原理,使用基于OpenCV(open source computer vision library)的图像处理算法辅助开发其软件系统。提出一种基于边界修复的图像二次校正法,通过对训练样本的测量发现,系统拥有很好的指点精度。实验结果表明,所设计触摸屏系统能够初步实现非接触式指点的要求,为大屏幕挂壁式非接触式触摸屏系统的研究提供了有效的思路。
When the current touch screen must be contacted control, it proposes a new touch screen system based on the image processing technology.The system introduces Microsoft VX-6000 USB2.0 camera as its image sensor, gathers image sequences, identifies and positions the laser spot,and responds with users＇ pointing information.It describes the architecture of the system, a software for positioning,and uses image processing algorithm based on OpenCV（open source computer vision library） to help developing its software system.It proposes an image secondary correction method based on edge-restoration.By training samples, it finds that the system has excellent accuracy.The experimental results indicate that the system can realize the non-contact requirement and provide an effective thought for the study of non-contact large screen wall touch screen system.
出处
《计算机工程与应用》
CSCD
北大核心
2011年第32期71-74,共4页
Computer Engineering and Applications
基金
四川省应用基础项目(No.07JY029-087)
关键词
触摸屏
非接触式
激光光斑定位
图像校正
touch screen
non-contact
position the laser spot
image correction
