Making Augmented Reality Practical on Mobile Phones, Part 2

Part 1 of this article introduced a software environment for augmented reality (AR) on mobile phones, discussed development and debugging strategies, and showed how to execute several tasks of a common AR system in parallel on a mobile device. Part 2 discusses how to overcome the most severe limitations such as memory, rendering speed, and computational power. The authors analyze where an optimized mobile phone AR application spends most of its processing time and give an outlook on what to expect in the next few years.     

A framework for evaluating the usability of mobile phones based on multi-level, hierarchical model of usability factors

As a mobile phone has various advanced functionalities or features, usability issues are increasingly challenging. Due to the particular characteristics of a mobile phone, typical usability evaluation methods and heuristics, most of which are relevant to a software system, might not effectively be applied to a mobile phone. Another point to consider is that usability evaluation activities should help designers find usability problems easily and produce better design solutions. To support usability practitioners of the mobile phone industry, we propose a framework for evaluating the usability of a mobile phone, based on a multi-level, hierarchical model of usability factors, in an analytic way. The model was developed on the basis of a set of collected usability problems and our previous study on a conceptual framework for identifying usability impact factors. It has multi-abstraction levels, each of which considers the usability of a mobile phone from a particular perspective. As there are goal-means relationships between adjacent levels, a range of usability issues can be interpreted in a holistic as well as diagnostic way. Another advantage is that it supports two different types of evaluation approaches: task-based and interface-based. To support both evaluation approaches, we developed four sets of checklists, each of which is concerned, respectively, with task-based evaluation and three different interface types: Logical User Interface (LUI), Physical User Interface (PUI) and Graphical User Interface (GUI). The proposed framework specifies an approach to quantifying usability so that several usability aspects are collectively measured to give a single score with the use of the checklists. A small case study was conducted in order to examine the applicability of the framework and to identify the aspects of the framework to be improved. It showed that it could be a useful tool for evaluating the usability of a mobile phone. Based on the case study, we improved the framework in order that usability practitioners can use it more easily and consistently.     

智能手机增强现实关键技术研究

将增强现实技术应用到智能手机上,实现增强现实系统的小型化和便携化,会大大拓展和深化增强现实系统应用的广度和深度。当前对于智能手机增强现实技术的研究,一般采用基于计算机视觉（即视频检测）的注册方式。首次提出了在智能手机上采用GPS/三维电子罗盘的注册方法,研究微型三维电子罗盘与智能手机的软、硬件接口,从底层开发并实现具有增强现实功能的软件模块,建立基于智能手机的空间信息三维可视化模型算法,并以三维管线为例进行实证研究,结果表明基于空间信息的智能手机增强现实构建的技术路线是可行的。     

一个面向智能电话的移动可信平台设计

由于手机病毒或设备失窃,导致手机上的私密数据面临泄漏的危险。为了满足移动平台的安全需求,TCG的MPWG提出移动可信平台规范。然而MPWG并没有明确规定特定的技术方法来实现移动可信模块(MTM),现有研究中没有整体的可实际部署于智能手机环境的MTM平台框架性设计,对可信软件栈(TSS)也没有可以实施的详细的部署方案。设计了一个面向智能手机的移动可信平台服务模型,它将基于TrustZone的纯软件MTM实现与基于Java Card的智能卡MTM实现结合起来构建两个可信引擎。提出其中可信构建块的部署流程并对其安全性进行了分析。     

Linux手机软件平台创建工具

随着手机功能的丰富和使用领域的拓广,手机软件平台技术越来越被重视。手机软件平台对手机开发和手机性能上的影响,已经使其成为技术领域内一个研究的热点。为了使基于Linux的嵌入式软件平台的建立、集成和分配更容易,需要一个手机软件平台创建工具,以提高手机软件平台的开发效率。手机软件平台创建工具是一个图形用户界面的系统集成和分配工具,功能覆盖了创建手机软件平台的全过程。分析了基于Linux的手机软件平台的优势,探讨了软件包管理方式,描述了平台创建工具的系统结构和相关技术,并讨论了该工具在手机软件开发过程中所起的重要作用。     

基于TTCN-3的手机网络应用软件测试方法研究

介绍了手机网络应用软件的主要开发技术,概述了TTCN-3标准规范中的TTCN-3核心语言、TTCN-3运行时接口和TTCN-3控制接口的基本概念,并在对手机网络应用软件网络连接方式分析的基础上,提出了基于TTCN-3的手机网络应用软件测试方法,说明了使用TTCN-3测试手机网络应用软件的测试流程.通过给出一个手机网络应用软件的测试实例,展示了这种测试方法的可行性.     

手机遥控计算机（MPCPC）系统的开发与研究

研究了基于蓝牙通俗技术的手机遥控计算机（Mobile Phone Control Personal Computer）系统软件编程技术。软件分为计算机端和手机端两部分,计算机端用JavaSE作为开发语言,手机端用J2me作为开发语言,通过JSR82标准里的核心蓝牙包javax.bluetooth实现无线通信功能。该软件系统可改变用户控制计算机的方式,使计算机控制更加多样化,用户使用更方便、舒适。     

IMAF: in situ indoor modeling and annotation framework on mobile phones

The widespread use of smart phones with GPS and orientation sensors opens up new possibilities for location-based annotations in outdoor environments. However, a completely different approach is required for indoors. In this study, we introduce IMAF, a novel indoor modeling and annotation framework on a mobile phone. The framework produces a 3D room model in situ with five selections from user without prior knowledge on actual geometry distance or additional apparatus. Using the framework, non-experts can easily capture room dimensions and annotate locations and objects within the room for linking virtual information to the real space represented by an approximated box. For registering 3D room model to the real space, an hybrid method of visual tracking and device sensors obtains accurate orientation tracking result and still achieves interactive frame-rates for real-time applications on a mobile phone. Once the created room model is registered to the real space, user-generated annotations can be attached and viewed in AR and VR modes. Finally, the framework supports object-based space to space registration for viewing and creating annotations from different views other than the view that generated the annotations. The performance of the proposed framework is demonstrated with achieved model accuracy, modeling time, stability of visual tracking and satisfaction of annotation. In the last section, we present two exemplar applications built on IMAF.     

General-purpose modular hardware and software framework for mobile outdoor augmented reality applications in engineering

This paper presents a reusable, general-purpose, mobile augmented reality (AR) framework developed to address the critical and repetitive challenges specific to visualization in outdoor AR. In all engineering applications of AR developed thus far, basic functionality that supports accurate user registration, maximizes the range of user motion, and enables data input and output has had to be repeatedly re-implemented. This is primarily due to the fact that designed methods have been traditionally custom created for their respective applications and are not generic enough to be readily shared and reused by others. The objective of this research was to remedy this situation by designing and implementing a reusable and pluggable hardware and software framework that can be used in any AR application without the need to re-implement low-level communication interfaces with selected hardware. The underlying methods of hardware communication as well as the object-oriented design (OOD) of the reusable interface are presented. Details on the validation of framework reusability and pluggability are also described.     

手机仿真取证系统浅析——Android系统仿真实战

随着各种手机的推广,手机应用程序的极大丰富,在实际取证工作中,我们经常会遇到对各种手机的应用程序取证,而现有对手机应用程序的分析技术刚刚起步,要实现对大部分应用程序使用痕迹的取证需要一段较长的时间。如何快速对手机应用程序进行取证成为取证工作的一个重要。因此本文提出了一个手机仿真取证系统的解决方案,并以Android系统为例进行介绍。     

基于PU-Faster R-CNN的手机屏幕缺陷检测算法研究

手机屏幕缺陷检测是手机生产的重要环节,实现准确而高效的屏幕缺陷检测对于提高手机工业产能具有重要意义。在实际生产过程中,手机屏幕图像缺陷特征隐晦、缺陷尺寸差异大等问题,加大了手机屏幕缺陷检测的难度。为解决上述问题,提出了一种基于Preprocessing operations are combined with U-Net-Faster R-CNN（PU-Faster R-CNN）的手机屏幕缺陷检测模型。针对手机屏幕图像的特征信息隐晦的问题,提出多层特征增强模块,有效的对目标缺陷特征信息进行增强。构建多尺度特征提取网络,有效提取多尺度的缺陷特征信息。为了生成拟合性更好的Anchor box,提出了自适应区域建议网络,通过自迭代聚类算法生成尺寸更准确的Anchor box模板。实验结果表明,基于PU-Faster R-CNN的手机屏幕检测框架在手机屏幕数据集上优于主流的手机屏幕缺陷检测框架。     

基于Android平台的双网双待的研究与设计

为实现Android平台上的双网双待功能,研究Android平台的系统架构以及Android fram ework层上已经实现的双卡处理机制。提出一种在无线接口层(R IL)上依样建立一套新的RILD river处理机制,从而将双卡分别进行处理的方法。实现基于An-droid系统平台的GSM和CDMA双网双待机制,对Android系统平台和主要的Phone应用模块进行了详细的分析。结果表明,在An-droid系统原有架构基础上进行双网双待设计,具有简单、易扩展的优点,且更好地满足广大Android手机用户的需求。     

Usability risk level evaluation for physical user interface of mobile phone

The mobile phone has become an indispensable device in everyday life. However, many usability problems were generated by the multi-functionality of mobile phones. There was an important increase on the user interface (UI) design and usability. With the introduction of a variety of forms and keypads in mobile phones, the user's need of controllability, grip-stability, and usability were raised in the UI aspect. Therefore, in this study, we investigated the physical user interface (PUI) elements of mobile phones, and defined the degree of usability risk such as key level value, function level value, and grip level value. Also, this study proposed an evaluation framework to quantitatively measure the usability risk in the mobile phone PUI elements. For this, the mobile phone PUI elements were analyzed and classified by key type, function, and form-factor. Hence, in the case study was investigated and evaluated 133 mobile phones in the market by the proposed framework. As a result, the proposed evaluation framework enabled the measurement of the mobile phone usability risk level in the early stages of the concept design. This made possible the prediction of design problems related with the mobile phone PUI.     

基于ECC的移动电子商务安全框架研究

随着3G技术和智能手机的飞速发展,移动互联网已成为时代的骄子,智能手机用户爆炸性的增长速度使得移动电子商务渗透到生活中的方方面面,推动着移动电子商务的快速发展。文章从解决移动电子商务安全问题的角度出发,从自主创新和系统集成创新两个方面提出了实现移动电子商务平台的安全保障框架,并详细介绍了安全框架的设计和实现方法。安全框架在相关移动电子商务平台项目中的实际运行情况表明,该框架能够为企业提供完善的安全解决方案,降低各企业单独实施电子商务安全的成本和风险,增强用户对移动电子商务安全的信心。     

Observer设计模式在手机导航软件中的应用

该文探讨了观察者（Observer）设计模式的概念及在手机导航软件中的应用。通过实例证明了该模式下导航软件的性能得到了进一步的提升,提供了实现手机导航的Java程序代码,并总结该模式在软件设计过程中的优点。     

基于Android手机安全防护系统的研究

Android操作系统作为现在主流手机操作系统．而随之而来针对Android手机恶意软件每天都在增长。此系统旨在研究基于Android手机的安全防护系统,根据不同的用户行为提供不同的防护策略,为用户提供手机通信安全及隐私安全。     

基于MTK平台的手机应用程序开发

随着移动通讯的迅速发展,手机已经成为现代生活中不可缺少的工具.在高速发展的手机市场,MTK以其成本低,开发周期短,功能强大等特点而快速风靡于世.描述了在MTK平台下的手机应用程序开发设计和实现,并且对MTK平台上如何进行软件开发的流程作了阐述,对其软件架构、程序设计、问题解决等工作进行了研究和探讨.     

基于Android手机安全防护系统的研究

Android操作系统作为现在主流手机操作系统,而随之而来针对Android手机恶意软件每天都在增长。此系统旨在研究基于Android手机的安全防护系统,根据不同的用户行为提供不同的防护策略,为用户提供手机通信安全及隐私安全。     

基于Gaia与JADE框架的MAS建模

为了更加有效地开发MAS系统,简化系统建模流程,传统的建模方法已暴露出其不足之处,因此必须采用新的分析和设计建模方法.提出了Gaia建模方法和JADE框架,Gaia为复杂开放式软件系统的设计和分析提供了清晰的解决方案,JADE则是在符合FIPA规范的MAS系统下开发Agent应用的一种软件框架结构,通过结合Gaia和JADE框架对一个针对手机用户的个人信息MAS系统进行了建模,验证了结合使用Gaia建模和JADE框架能够显著的简化MAS系统开发流程,提高开发效率.     

安卓之移动医疗服务平台的开发

随着科学进步和时代的发展,手机操作智能化趋势日渐突出,以前只有在电脑上才能运行的软件现在逐渐发展成在手机上也能运行的软件。移动医疗服务也可以用手机来实现,这样做既便于用户查看,又便于管理者进行管理,因此开发一款基于Android系统的移动医疗服务软件是非常有必要的。本系统就是基于Android平台的在智能手机上运行的移动医疗服务平台。