VRML描述的网上全景漫游

用Java语言描述、应用全景图像实现三维场景的虚拟漫游在因特网中巳得到了广泛应用，然而，用全景图像描述的场景，其景物和光照环境固定，场景交互性较差，场景切换不自然，在全景图像的基础上，提出应用虚拟实境建模语言（VRML）来描述虚拟场景的方法，不仅能够较简便地实现三维漫游，而且可改变相关景物和光照环境，场景的交互和切换更自然，适合于因特网中应用。     

面向因特网环境的面部三维变形

因特网环境下，与面部相关的三维造型具有广泛的应用前景，为此，采用全景浓度图象及其对应的全景颜色图象来描述面部三维模型，在此基础上，进行面向因特网环境的面部三维变形操作，并通过虚拟现实造型语言，在网络浏览器中，采用合理的折衷方法来实现，实验结果表明，通过适当的自动网格划分和逼真的纹理映射等措施，可以在保证较好逼真度的情况下，使描述的数据量尽可能小，适合于因特网中应用，该研究可为网上虚拟交流，网上播音，网上远程教育等提供技术支持，应用该技术可望有效地改善因特网的人机交互界面，提高网络趣味性。     

全景视频的信息组织和实现方法

全景视频不是一般意义的虚拟现实，它提供了一种新型的时空信息组织形式。这种基于实景图像的全景视频，具有广阔的应、用前景和研究价值．本文介绍了全景视频的概念和表现方式，以及利用全景视频技术来构造虚拟现实环境的方法，并提出了实现全景视频的具体方法步骤。     

基于Krpano的全景校园漫游的设计与实现

在数字校园建设和发展中,以虚拟全景校园漫游为基础的校园信息化平台能够为师生提供全新的沉浸式浏览体验,并提供更集中的信息交互功能。虚拟现实技术能够真实地再现现实环境,通过交互式操作,用户可以获得与真实环境相似的感受和体验,其中全景漫游是虚拟现实技术的一种典型应用。该文以南开大学滨海学院为实践区域,基于Krpano平台,利用Google Maps地图服务,采用全景图制作技术、SQL数据库技术和计算机网络技术搭建了一个虚拟全景校园漫游系统,并可跨系统、跨设备使用。系统实现了2D校园全景和谷歌地图信息服务功能,并提供了搭载陀螺仪传感器的可穿戴式VR设备使用的WebVR全景显示,满足了数字校园分布式、便于使用的需求。实践证明了基于Krpano框架设计能深度定制虚拟全景校园漫游系统的相关功能,能有效开发并拓展系统,并具有重要的实践意义。     

基于全景图的浙江中医药博物馆虚拟漫游系统的探究

本文对三维全景虚拟浙江中医药博物馆进行研究探讨。三维全景虚拟漫游技术主要涉及全景图的生成、漫游空间的编辑以及浏览器的设计三个问题。基于对这三个问题的探讨,设计制作出浙江中医药博物馆全景三维漫游系统,使用户可以全方位地观察浙江中医药博物馆内的陈列物品,提高了信息服务系统的直观性,并给用户身临其境的感觉。通过镜头拍摄校博物馆内的各个主要场景以及陈列的物品等场景来设计拼接生成三维全景图,实现虚拟博物馆实景漫游,并为用户提供键盘、鼠标等控制手段和人机交互方式。     

一种基于3维全景图像技术的深度测量方法

3维全景图像技术是一种能够记录和显示全真3维场景的图像技术。该技术采用微透镜阵列记录空间场景，空间任意一点的深度信息只需通过一次成像即可直接获得。本文研究采用全景图像技术直接获取物体空间信息的方法。此方法首先从全景图像中抽提视图。视图是通过抽提全景图像中对应于每个微透镜下同一局部位置的点人工合成的。每幅视图包含了全景图像中对原来的物空间场景按照某一特定方向的平行投影记录信息。接下来通过分析全景图像的光学成像过程。推导了用来描述物体深度信息和其在对应的视图间的视差关系的深度方程。从而得出空间任一点的深度可以通过其在对应视图间的视差来求得。最后，通过运用全景图像测量火柴盒的厚度的实例，验证了这一方法的可行性。其结果一方面可用于全景图像的数据处理本身，另一方面可望为开发新型的深度测量工具提供理论依据。     

一种支持CSCW的全景信息空间模型

全景信息空间是通过建立局部视点全景图像空间关联构造的一种全景化的信息空间（ＨＶＳ），本文分析了全景信息空间支持ＣＳＣＷ所需解决的问题，提出全景信息空间所应具有的体系结构及适应协同工作的多代理分布模型。     

三维全景技术——360°虚拟现实

三维全景技术是目前迅速发展并逐步流行的一个虚拟现实分支,可广泛应用于网络三维业务,也适用于网络虚拟教学领域。传统三维技术及以VRML为代表的网络三维技术都采用计算机生成图像的方式来建立三维模型,而三维全景技术则是利用实景照片建立虚拟环境,按照照片拍摄→数字化→图像拼接→生成场景的模式来完成虚拟现实的创建,更为简单实用。     

三维全景技术——360°虚拟现实

二维全景技术是目前迅速发展并逐步流行的一个虚拟现实分支,可广泛应用于网络三维业务,也适用于网络虚拟教学领域.传统三维技术及以VRML为代表的网络三维技术都采用计算机生成图像的方式来建立三维模型,而三维全景技术则是利用实景照片建立虚拟环境,按照照片拍摄一数字化一图像拼接一生成场景的模式来完成虚拟现实的创建,更为简单实用.     

多用户虚拟校园漫游系统的设计与实现

以北方工业大学的数字化和虚拟化为目标,结合虚拟现实技术,利用Lyinux商业引擎,建立多用户虚拟校园漫游系统,实现交互漫游、全景导航、实时聊天等功能。重点研究提高虚拟场景渲染速度和实现多用户之间的同步。该系统在交互性、渲染速度和真实感等方面取得很好的效果。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。