摘要
在实际应用中,有一种通过红外发光笔与大尺寸屏幕相结合的人机交互技术,利用红外发光笔触摸屏幕时发出红光,光斑图像被摄像头拍摄,通过图像求重心的方法确定书写笔的位置坐标。分析了该算法的不足,并提出了一种新的红外发光笔定位改进算法,新算法可以克服现有算法所带来的红外发光笔定位不准确的缺陷,同时又不影响触摸装置交互的实时性,实际应用中验证了新算法的有效性。
A human-machine interaction technology combined IR-pen（pen with IR） and large screen is introduced in practical application.It is inaccurate to detect the touch point during the pen is not vertical with the touch screen.In the paper,an efficient approach to detect the touch point about the touch apparatus is proposed,which can be used to solve the problem,no matter the pen is vertical with the screen or not.The new method does not influenced feasibility of the touch response.The experimental results show a good capability of detection and localization.
出处
《现代电子技术》
2012年第1期178-180,共3页
Modern Electronics Technique
基金
广东省自然科学基金项目(10151064007000016)
关键词
触摸定位
DLP触摸装置
图像处理
曲率
touch localization
DLP touch apparatus
image processing
curvature
