视频虚拟键盘中的按键自定义问题研究  

STUDY ON THE KEYS DEFINED BY USER ISSUE WITH VIDEO VIRTUAL KEYBOARD

作　　者：刘晓威[1] 张金[1] 李洋[1] 成媛媛[1] 

机构地区：[1]南开大学信息技术科学学院,天津300071

出　　处：《计算机应用与软件》2012年第6期89-93,共5页Computer Applications and Software

基　　金：国家大学生创新性实验计划项目(101005514)

摘　　要：目前,电子数码产品的功能越来越强大,功能的复杂直接导致了操作的繁琐。为此,对视频虚拟键盘中的按键自定义问题进行了细致的研究,提出一种基于视频图像处理技术的用户自定义标示符方法,以求针对不同用户提供不同的操作方式。该方法利用电子数码设备附加的摄像设备,记录用户手指移动轨迹,由此识别出用户标识区域,并为该区域赋予相关信息的功能,即用户对于该区域的点击被识别为指定的按键操作,从而实现用户自定义虚拟键盘的功能。最后对该方法进行了实验验证与分析,证明该方法具有技术可行性,并在操作简单方便和成本控制方面有较好表现。Currently,the increasingly powerful functions of electronic digital equipments are so comprehensive that they directly leads to operational complexity.Therefore,the authors have conducted careful study on the keys defined by user issue in video virtual keyboard.They propose a video image processing technology based user-defined label approach in order to provide different operating modes for different users.The method makes use of the affiliated camera in electronic digital devices to record user finger movement trajectory so as to recognize the user-defined region,moreover,assign functions of relative information to the region,which means,when user clicks inside the region,the action is identified as a specified key operation.Thus the user-defined virtual keyboard functions are implemented.At last the method is validated and analyzed by experiments.Experiment results have proved that the technology is not only applicable,but also convenient to operate and perform well on cost control.

关 键 词：视频图像处理 虚拟键盘 用户自定义标示 嵌入式设备 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]