摘要
为了在商务、会议、教学演示过程中使用激光笔实现除上下翻页之外的点击功能,设计一种红外激光笔遥指虚拟触摸系统。使用者手持红外激光笔对任意的显示屏进行远距离触摸指示和点击控制,由图像获取装置拍摄显示屏,获取包括红外激光笔发出的红外激光点在内的显示屏图像,再由图像处理模块处理显示屏图像识别出红外激光点及其在显示屏中的位置,根据红外激光点的时间长短和次数区分鼠标移动、鼠标单击、鼠标双击等操作类型,并控制计算机系统在显示屏对应位置上显示出表示光点的光标图形,完成相应操作,实现虚拟触摸功能。
To realize virtual touch far away in business, conference and education area one remote virtual touch system based on infrared laser pointer is presented. System is consisted of infrared laser pointer, large scale display systems, image acquisition equipments and image processing module. Images of infrared laser pointer dot and display surface are captured by image acquisition equipments which are made up of infrared camera, ordinary camera, spectroscope and infrared filter or made up of infrared camera, infrared filter and drive setting. Corresponding relation between image coordinates and display coordinates is constructed in image processing module used by image recognition technology. A point in image is converted to a point in screen according to above relation, and then computer is controlled to show cursor, execute click, execute double click and move cursor operation in corresponding coordinate position based on infrared laser point occurrence and persistence. Experimental result shows indicated that infrared laser pointer is significantly better than standard laser pointer which could only indicate something or page down and page up due to its click ability.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第5期1073-1076,1080,共5页
Computer Engineering and Design
基金
国家自然科学基金项目(60773114)
安徽大学人才队伍建设基金项目(02203105)
