共查询到18条相似文献,搜索用时 78 毫秒
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陈旸 《数字社区&智能家居》2012,(2X):1387-1389
多点触摸随着iphone的推出风靡全球,是当今最炙手可热的人机交互方式。该文对多点触摸的原理和编程模型进行简要的介绍,并给出了一些触摸手势的C#编程实现。 相似文献
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一种新型红外多点触摸识别算法 总被引:2,自引:0,他引:2
近年来,多点触摸技术逐渐成为最为重要的人机交互设备,得到了广泛的应用。本文提出一种新型红外多点触摸识别算法原型,该算法同时在两个不同坐标体系中对用户的触摸进行识别,克服了传统红外触摸屏在识别多点触摸时存在的伪触摸点的问题,实验证明该算法提高了红外触摸屏的多点触摸识别率。 相似文献
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目前多点触摸桌面广泛采用计算机视觉技术实现.触摸信息是通过手指反射的红外线在红外摄像机下成像,然后对红外相机得到灰度图像进行手指区域提取,跟踪,校正得到.由于桌面表面红外光照射不均衡,环境噪声干扰等因素,目前存在的多点触摸工具包在检测和跟踪方面效果较差,也没有考虑手指运动和摄像机畸变的影响.本文提出基于图像局部极值点检测手指触摸区域,结合手指运动和相邻帧信息进行手指跟踪,实现摄像机畸变校正的多点触摸桌面系统工具包MTDriver.实验结果表明,MTDriver 跟踪识别准确,效率高,鲁棒性强,具有实用性. 相似文献
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多点触摸屏的应用程序开发是当前的研究热点.Linux multi-touch (MT)协议是Linux输入子系统的一个标准协议,定义了多点触摸设备驱动程序的数据传输规范,有着广泛的使用范围.识别和处理多点触摸屏驱动程序的数据是多点触摸屏应用最基本的功能.本文采用有穷自动机的思想,设计了一个可以识别符合Linux multi-touch协议规范数据的多点触摸屏中间件.中间件提供外部接口供应用程序使用,可以减少程序开发人员的重复工作,提高开发效率. 相似文献
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《计算机应用与软件》2015,(10)
随着智能手机等电子产品的普及,多点触摸屏应用越来越广泛。但是因触摸屏表面较光滑,使得盲人不能通过触觉获得屏幕的信息,造成其输入文字困难。提出采用多点触摸联机手写识别盲文技术的汉字输入法。该方法不仅解决了盲人能利用多点触摸屏输入文字信息,也能应用于明眼人的触摸屏联机手写盲文识别进行汉字输入,其书写汉字速度远高于现有的触摸屏的手写输入法。 相似文献
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针对多点触控手势间接指令问题,提出了基于多点触控的沙画手势识别系统,该识别系统由时间、空间、形状信息控制。提出一种手势图形建模方法,测量手势的笔划之间的空间和时间关系。采用聚类算法标记手势图形中笔划的形状信息作为局部形状特征;利用基准方法HBF49特征提取全局形状特征。通过一组有10种不同多点触控的沙画手势的数据集评估基于多点触控的沙画手势识别系统,使用图嵌入方法和SVM分类进行手势识别,识别的准确率达到94.75%。实验结果证明,此研究对完成基于多点触控的沙画虚拟系统有重要作用。 相似文献
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针对智能手机所面临的信息安全威胁问题,提出一种基于手机触摸屏传感器的多点触摸身份认证方法。首先由触摸屏传感器采集手指滑动原始数据序列,通过平滑去噪、位置及长度归一化预处理;然后提取手势运动一阶、二阶归一化导数序列及运动方向为身份验证特征序列;最后采用模板匹配方法,使用动态时间规整算法匹配比较注册模板特征序列与测试特征序列,判断用户身份真实性。仿真结果表明,所提算法对不同用户身份认证的平均错误拒绝率和错误接受率分别为3.83%和2.07%,与使用径向基函数为核函数的支持向量分布估计(SVDE)算法相比,平均错误拒绝率和错误接受率分别降低1.81%和2.35%。经性能分析,所提算法能明显提高身份认证的准确性。 相似文献
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本文通过对linux多点触摸屏驱动的研究将有限状态机原理应用到多点触摸屏驱动之中,解决了由于硬件原因造成触摸屏触控点抖动及Qte/Android触摸屏手势判断不准的问题。 相似文献
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In the last decades, we have witnessed a growing interest toward touchless gestural user interfaces. Among other reasons, this is due to the large availability of different low‐cost gesture acquisition hardware (the so‐called “Kinect‐like devices”). As a consequence, there is a growing need for solutions that allow to easily integrate such devices within actual systems. In this paper, we present KIND‐DAMA, an open and modular middleware that helps in the development of interactive applications based on gestural input. We first review the existing middlewares for gestural data management. Then, we describe the proposed architecture and compare its features against the existing similar solutions we found in the literature. Finally, we present a set of studies and use cases that show the effectiveness of our proposal in some possible real‐world scenarios. 相似文献
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面向大规模数据集成消息中间件系统设计实现 总被引:1,自引:0,他引:1
在分布式网络环境中,构造基于消息通信中间件的数据传输系统,能有效地满足数据传输的可靠性、安全性和异步性等企业级需求.然而,随着企业经营规模的扩大,对数据传输系统提出了参与方多、交互数据量大等新的需求,现有的基于点对点(PTP)和发布/订阅(pub/Sub)通信模式的消息中间件难以很好的支持这些新的需求.根据大规模数据传输系统的新特点,结合 PTP 和 Pub/Sub 通信模式,提出了一种基于点对点的发布/订阅消息中间件通信模型(PBPS),并在消息中间件ISMQ基础上提供了实现.实际应用表明,该方法能够有效满足大规模数据传输的要求. 相似文献
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This study aimed to evaluate how differently co-located users perform and interact while solving problems by using existing and newly developed interaction mechanisms of a multi-touch tabletop system on a large-size tabletop display. Furthermore, this study aimed to investigate users’ perceived situation awareness due to the system. This study conducted one experiment and introduced three newly developed interaction mechanisms: two-way rubber band, drag-and-response, and centre collection area. Two-way rubber band enables users not only to send but also to request digital objects. Drag-and-response allows users to accept or to reject digital objects sent by others; therefore, it eliminates conflicting situations and interference. Centre collection area stores, organises, and manages shared digital resources on a surface of a tabletop display, so that users have an overall picture of available resources. This paper discusses results of an experiment, research findings, and implications along with conclusions and several suggestions for future development and research. 相似文献
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As a popular infrastructure for distributed systems running on the Internet, middleware has to support much more diverse and complex interactions for coping with the drastically increasing demand on information technology and the extremely open and dynamic nature of the Internet. These supporting mechanisms facilitate the development, deployment, and integration of distributed systems, as well as increase the occasions for distributed systems to interact in an undesired way. The undesired interactions may cause serious problems, such as quality violation, function loss, and even system crash. In this paper, the problem is studied from the perspective of the feature interaction problem (FIP) in telecom, and an online approach to the detection and solution on runtime systems is proposed. Based on a classification of middleware enabled interactions, the existence of FIP in middleware based systems is illustrated by four real cases and a conceptual comparison between middleware based systems and telecom systems. After that, runtime software architecture is employed to facilitate the online detection and solution of FIP. The approach is demonstrated on J2EE (Java 2 Platform Enterprise Edition) and applied to detect and resolve all of the four real cases. 相似文献