一种硬件加速OpenCV的图像处理方法研究

研究了一种基于Vivado HLS加速Open CV程序的方法,其核心是利用Xilinx高层次综合工具Vivado HLS,将C++编写的Open CV程序按照Vivado HLS处理规范进行修改,进而将代码转换为硬件描述语言,可快速生成IP核。结合Xilinx Zynq So C架构和其视频图像处理方面的优势,通过软硬件协同的方法 ,实现Open CV程序算法向高性能处理平台Zynq So C系统的移植和加速。该方法对图像处理软件设计的硬件化加速具有重要的应用价值。     

基于高层次综合的SVPWM算法设计与验证

针对多电机高速并行控制需求,以Xilinx的K7系列FPGA为主控平台,在Vivado开发环境中,采用高层次综合(High Level Synthesis,HLS)技术,搭建永磁同步电机系统电流环及SVPWM算法IP核,结合模拟量采集和PWM输出IP核,实现了全并行化的电机控制系统算法,建立了仿真模型,对算法的精度、资源消耗、实时性等指标进行了分析与优化,搭建了硬件平台,与基于嵌入式C程序设计的算法进行同步输出对比.结果表明,该设计方案计算准确、性能更优、开发效率高、维护方便,能够应用于多电机并行控制、高频控制产品.     

基于Zynq与Qt的视频采集与图像边缘检测系统

基于云计算技术的传统人工智能存在着高时延与低安全性问题,而这些问题推动着边缘人工智能逐渐走进大众的视野。但边缘人工智能也存在着嵌入式处理器计算能力弱、效率低下等问题。利用Xilinx公司出品的Zynq系列可拓展处理平台进行软硬件协同设计,实现了一套嵌入式视频采集与实时图像边缘检测系统。利用Vivado HLS工具设计并实现了本系统中的硬件图像边缘检测IP核,并使用Qt工具为本系统设计了可视化的操作界面。测试结果表明,本系统中所应用的硬件图像边缘检测方法比纯软件图像边缘检测方法速度上快了6倍,为边缘人工智能所面临的问题提供了可行的解决途径。     

Vivado HLS嵌入式实时图像处理系统的构建与实现

传统的基于CPU、GPU和DSP的处理平台难以满足图像实时处理的要求,而FPGA在并行图像处理上有着独一无二的优势,在性能和成本之间提供更加灵活的选择。通过Xilinx最新的Vivado HLS工具,设计实现了可变参数的拉普拉斯算子图像滤波算法,并且在ZYNQ-7000 So C上构建了可视化的实时嵌入式图像处理系统。实验结果表明,系统可以实现不同的图像处理算法,很好地满足了图像处理的实时性、高性能、低成本要求,对未来高性能图像处理系统的设计和实现提供了很好的借鉴。     

基于Xilinx UltraScale+VU9P FPGA的SoC原型验证系统研究

为应对So C设计规模增大、功能复杂化带来的芯片验证耗时太长的问题,通过讨论SoC系统与FPGA原型核心板资源的架构,按照从ASIC到FPGA的移植原理,设计实现一种基于Xilinx UltraScale+VU9P FPGA的原型验证系统。系统基于Xilinx Vivado工具完成逻辑综合、实现,并完成硬件子系统设计。使用逻辑电平转换器芯片,将FPGA原型的1.8V转换为SoC设计IO为3.3V电平的PAD,实现对3.3V标准电平的兼容。通过实验,在该系统上完成了大规模高性能SoC的软硬件协同验证,结果表明系统实现设计预期功能,有助于加快芯片整体的验证速度。     

基于Vivado HLS雾天图像预处理IP核设计

雾天的出现给图像预处理带来了挑战。同时，随着机器视觉技术的发展，人们对图像预处理的功能集成和时间消耗提出了更高的要求。Vivado HLS高层次综合工具，采用C语言实现雾天图像的预处理IP设计，实现图像的去雾和边缘检测处理，将不同图像预处理算法打包在一起，形成IP核。     

FPGA的高速多通道数据采集控制器IP核设计

介绍基于FPGA嵌入式系统的多通道高速数据采集模块控制器的IP核设计。采用TI公司的6通道同步采集A／D转换器件（ADS8364）,针对该器件使用硬件描述语言设计IP核,实现对采集数据的处理,同时设计了IP核与嵌入式系统的接口。在Xilinx公司的ISE开发工具中,利用FPGA器件中的硬FIFO控制器辅助设计IP核,利用嵌入式开发工具EDK建立FPGA嵌入式系统,并添加和修改了用户自定义IP核,通过仿真验证了该方法的实效性。     

uIP协议栈在SOPC系统中的应用

为了提高嵌入式系统设计的灵活性,适应未来嵌入式系统发展的方向,提出了一个基于Xilinx FPGA利用片上可编程系统(system on a programmable chip,SOPC)技术实现以太网数据传输的方法.对整个系统的硬件结构,Xilinx SOPC设计所使用的工具、流程和采用的关键技术进行了介绍.在此基础上应用Xilinx的嵌入式开发套件,以Xilinx公司提供的知识产权(intellectual property,IP)核为基础,搭建了一个SOPC平台.将uIP协议栈应用于软件设计中,实现了驱动程序和应用程序的开发.与上位机进行通信测试的结果表明了该设计的可行性和有效性.     

基于NiosⅡ多核驾驶疲劳检测系统设计

采用SOPC技术,对多核驾驶疲劳检测系统进行了研究与设计.为了实现系统设计的单片化,把NiosⅡ软核处理器、摄像头采集控制器IP核、部分图像处理算法模块等系统部件都集成到一块FPGA上.为了提高系统处理速度,系统采用双NiosⅡ软核处理器设计,同时利用NiosⅡ处理器自定制指令与C2H加速编译工具对系统中关键部分进行硬件加速,使系统具有实时性检测功能.     

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.     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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。