基于ADSP—Blackfin533的H．264视频编码器的实现

描述了基于ADSP—Blackfin533平台的H．264高性能视频编码器的设计和实时实现。首先介绍了编码器硬件结构设奠？嚣而茹述了编码算法的移植以及基于Blackfin533结构和专用视频操作指令的算法优化，重点讨论了H．264算法帧间预测算法的改进。     

基于DM642的H.264视频编码器优化与实现

H.264是新一代的视频压缩标准.本文首先研究了该标准的主要内容,然后简要介绍了DSP TMS320DM642的出色性能及其视频驱动程序的实现,最后讨论了H.264编码在DSP TMS320DM642上的优化与实现.     

基于DSP实时实现的H.264运动估计快速算法

综合考虑运动估计的精度和搜索次数．提出了一种在DSP上实现符合H．264标准的运动搜索快速算法．该算法结合了钻石搜索和分层搜索的思想，在抽样块上进行菱形搜索，同时自适应预测搜索起始点，在保证估计质量的情况下减少了冗余搜索次数,极大的提高了搜索效率，对在DSP上实现H．264实时编码器具有重要的实用价值．     

DSP翻新16位

6月12日,ADI 公司在北京发布了Blackfin 系列16位数字信号处理器(DSP)。这是 ADI 公司与英特尔联合开发的体现高性能体系结构的首款 DSP。这种为通信和一系列因特网应用而设计的新的 Blackfin DSP,通过易编程的     

基于Blackfin的嵌入式系统移植

Blackfin系列数字信号处理器（DSP）是ADI公司最新的基于微信号体系结构的DSP,具有快速数据处理能力和很高的性价比,在多媒体和通信等领域得到广泛应用。介绍了一种基于Blackfin的嵌入式Nucleus系统移植技术,包括开发环境的建立、系统引导程序的设计实现以及Nucleus系统的初始化等,为基于DSP嵌入式系统的开发提供了很好的借鉴。     

基于VxWorks和DM642下视频采集压缩系统的技术研究

介绍了一种基于VxWorks和DM642下应用目前最新的H.264视频编码算法实现视频采集压缩系统的方法,主要内容包括视频采集压缩系统的硬件实现平台、VxWorks下PCI驱动、H.264视频编码算法标准、DSP软件编程及H.264视频编码算法的实现等,最后给出了H.264视频编码器的性能测试。     

基于VxWorks和DM642视频采集压缩系统的技术研究

介绍了一种基于VxWorks和DM642下应用目前最新的H.264视频编码算法实现视频采集压缩系统的方法,主要内容包括视频采集压缩系统的硬件实现平台、VxWorks下PCI驱动、H.264视频编码算法标准、DSP软件编程及H.264视频编码算法的实现等,最后给出了H.264视频编码器的性能测试。     

面向医用电子内窥镜的高清视频处理系统

设计一种基于现场可编程门阵列(FPGA)和双数字信息处理器(DSP)的嵌入式高清内窥镜视频处理系统。利用FPGA对视频数据进行预处理,采用2片基于DaVinci-HD技术的DSP进行H.264编解码并行运算,通过PowerPC处理器完成系统管理、视频存储与网络传输。测试结果表明,该系统实时处理的视频分辨率达到1080i60,在图像质量上能达到H.264的高画质级别。     

基于Blackfin533 DSP的MPEG-4视频编码器设计

阐述的对象是基于Blackfin533 DSP的MPEG-4视频编码器。结合Blackfin533 DSP的结构特点和MPEG-4视频压缩标准的蛮时性要求，详细介绍了系统硬件设计、接口驱动程序设计、编码程序设计，提出实现方案。     

ADI推出超低功耗、高性能ADSP-BF70x Blackfin~处理器系列

<正>6月17日,全球领先的高性能信号处理解决方案供应商ADI公司在北京召开了新品发布会,ADI DSP部门的亚洲区域经理陆磊先生向媒体介绍了业界性能领先、超低功耗的ADSP-BF70x Blackfin处理器系列。相比ADI在2012年发布的BF60x系列而言,BF70x系列最主要的区别在于它是单核的处理器该DSP系列以竞争器件一半的功耗(不到100mW)实现了傲视群雄的800 MMACS的处理性能。此系列Blackfin处理器由8款高性价比成员构成,搭载最高1 MB内置SRAM,使许多应用无需采用外部存储器,     

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。     

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。