共查询到20条相似文献,搜索用时 18 毫秒
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In this article, we discuss experiences and lessons learned from deploying four mobile sensing applications on off-the-shelf mobile phones within a recreational framework called MobSens that contains elements of health, social, and environmental sensing at both individual and community levels. We describe the main components of our applications, which facilitate logging and external communications. We also outline the challenges faced when building and testing these applications and describe our strategies for overcoming them. 相似文献
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Supporting Context-Aware Media Recommendations for Smart Phones 总被引:4,自引:0,他引:4
Zhiwen Yu Xingshe Zhou Daqing Zhang Chung-Yau Chin Xiaohang Wang Ji Men 《Pervasive Computing, IEEE》2006,5(3):68-75
A context-aware media recommendation platform, CoMeR, uses an N × M-dimensional model and a hybrid processing approach to support media recommendation, adaptation, and delivery for smart phones.The essence of the model is that it considers context information, ranging from user preference and situation to device and network capability, as input for both content and presentation recommendations. It then generates multidimensional output including content rating and media modality and format as a result of the recommendation. 相似文献
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提出了一种适用于Android智能手机的灰度均值数字水印算法。在嵌入阶段,将经过像素重新组织的水印图像嵌入载体图像中;在提取阶段,先提取出初始水印,再判断初始水印是否需要区域替换,如果需要,则进行区域替换,否则不进行;最后,将初始水印还原成所需的水印图像。实验表明,该算法在具有良好水印透明性的同时,对JPEG压缩、加噪声、裁剪等常见的攻击具有鲁棒性。 相似文献
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Several research projects pursuing middleware architectures to support pervasive applications on smart phones reveal the importance of careful resource management, lightweight communication protocols, and asynchronous programming. 相似文献
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Controlling Home and Office Appliances with Smart Phones 总被引:1,自引:0,他引:1
Most home and office appliances contain microprocessors. All these appliances have some user interface, but many users become frustrated with their appliances' difficult, complex functions. However, a new framework, the personal universal controller (PUC), lets users interact with appliances through a separate user interface device that they carry. Smart phones are good candidates for providing interfaces because they're common, their communication capabilities connect users to appliances, and they're already being used for a wide range of applications. The framework includes an abstract specification language for describing appliances, a two-way communication protocol, and automatic interface generation software that customizes user interfaces. This article overviews the PUC system and describes in detail the design and implementation of automatic interface generation for Microsoft's Smartphone platform. 相似文献
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随着触摸屏技术的快速发展,智能手机的手势操作成为主要的人机交互方式.通过分析android平台的手势识别原理,指出其采样引起的特征丢失导致识别准确率不高以及识别速度偏慢等问题,提出基于向量的手势识别方法.谊方法规定八个方向,对触屏输入的手势进行取样并构造得到的方向序列,应用动态时间规整算法进行识别.该方法能够根据手势的方向特征达到对手势的快速筛选,与原有的基于坐标点距离的识别算法相结合,形成更加快速精确的自适应识别方法.实验证明,本文提出的自适应方法将手势识别速度提高近一倍,并进一步提高了识别的精确度,在智能移动设备上具有广泛的应用前景. 相似文献
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Android手机在给人们带来方便的同时,也存在潜在的安全隐患,用户隐私泄露是其中的一个严重问题。本文对Android手机隐私泄露问题进行了研究。首先介绍了Android手机中的隐私数据源类型,然后从四种角度分析总结了隐私泄露的方式:(1)应用中的隐私泄露;(2)应用间的隐私泄露;(3)传感器数据造成的隐私泄露;(4)网络传输中的隐私泄露。最后,针对应用间通信造成的隐私泄露问题,本文设计了一个基于控制进程通信的应用隔离系统。用户通过这个系统可以灵活控制哪些应用间不能通信,有选择性地保护Android手机中的高安全级数据,防范由于应用间通信造成的隐私泄露。 相似文献
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为了满足交互过程中的个性化需求,提出一种基于交互历史的自适应用户界面实现机制.以虚拟家居定制系统为例,对个性化定制过程中的典型交互任务进行分类;讨论了基于交互历史的在线跟踪机制,提出了基于交互历史序列分析的活动预测方法和可视对象的自适应布局机制.实验结果表明,文中方法是可行的. 相似文献
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The VBB project in India's National Capital Region of Delhi uses smart phones to build a pervasive network that gives people instantaneous information about available blood donors in their vicinity. The Virtual Blood Bank project lets subscribers access the service any time with no need for sophisticated hardware. 相似文献