基于形态学滤波和小角度边缘搜索的运动自适应去隔行

为实现隔行扫描到逐行扫描的视频格式转换,提出了一种运动自适应的去隔行算法,主要包括运动估计、运动向量的形态学滤波、小角度边缘搜索、时空插值权重自适应插值等。该算法通过同极性场的像素块绝对值差和(SAD)与运动阈值的比较实现运动估计,并对运动向量进行形态学滤波处理,消除噪声影响。在小角度边缘搜索中采用自适应搜索半径和并行搜索树的策略实现最小6°的检测精度。最后,通过时空权重自适应的插值算法实现去隔行处理,取得了很好的处理效果。     

基于数学形态学的视频帧间压缩算法研究与实现

常用视频压缩算法DCT存在方块效应和飞蚊噪声,在低速率传输下更为明显,难以满足视频传输中带宽窄、质量高的要求。基于数学形态学的视频图像帧间编码技术,是运用帧间运动补偿的编码算法,该算法通过复合形态变换,用结构元素对宏块中的不规则小块进行开、闭运算,选取并滤出不规则小块,再对不规则小块的大小和运动矢量进行运动估计编码,采用绝对差分和找出匹配块,实现帧间预测。通过仿真可达到比较精细的补偿,提高了编码效率,在相同压缩比下可提高视频质量,弥补了DCT算法在图像传输中的不足,改善了图像传输效果,降低了运算复杂度,对网络视频图像的编解码及传输具有一定的实用意义。     

一种自适应的快速全搜索运动估计算法

本文在连续消除算法和多阶连续消除算法的基础上提出了一种自适应的快速全搜索运动估计算法,进一步的降低了视频编码中全搜索运动估计的计算需求,并且运动估计的精度和全搜索算法完全一样.实验结果表明,该算法在SEA和MSEA的基础上又进一步的降低了15%～27%的计算需求,并且该算法可以和其他的任何一种快速运动估计算法相结合来减少视频编码的计算量及其VLSI的功耗.     

一种基于FBMA算法的整像素运动估计芯片的VLSI设计

给出了一种基于全搜索块匹配算法的运动估计电路的改进结构,并完成了VLSI设计.通过采用多端口匹配策略和双时钟方案,使得在提高先前帧搜索区域像素数据重复利用率的同时,将脉动阵列的计算效率提高到74.9%.采用TSMC0.25μm1P5MCMOS工艺,完成了运动估计芯片的VLSI实现,其芯片面积为3.37mm×3.37mm,最高工作频率为110MHz.综合后仿真表明在89.4MHz的频率下,该电路可以对支持MPEG4ASProfile标准的ITUR601格式视频图像(720×480@30HzNTSC或720×576@25HzPAL)进行基于整像素的实时运动估计.     

一种基于数学形态学与改进的SUSAN算子边缘提取快速算法

提出基于数学形态学和SUSAN算子的灰度图像边缘提取方法,同时对SUSAN算子进行了改进.该方法利用数学形态学开运算估计背景,将原始图像与背景进行几何运算,在处理后的图像上运用改进的SUSAN算子提取边缘,并进行了仿真实验.实验结果表明,该方法不仅具有较好的去噪和边缘提取能力,而且算法简单易于实现,运算速度快.     

基于两种数学形态学算法优势互补的图像细化方法

图像的细化是提取曲线特征,矢量化、识别等后续图像处理的基础,而单一的算法往往不能得到理想的细化效果.本文在研究各种已有的细化算法的基础上,从中选出两种不同的数学形态学算法共同处理同一图像,可以实现较好的细化效果:即先对图像采用基于5×5邻域模板的数学形态学细化算法进行细化处理,再对处理后的图像采用基于结构元素对的数学形...     

基于数学形态学的视频图像序列中的运动目标检测

R.Keshet（Kresch）提出了完备半格中的数学形态学,并给出了在视频图像序列中运动对象检测的应用.本文利用运动补偿、形态学方法和模板填充提出了复杂背景下的运动目标检测算法,并验证了算法的有效性和正确性.     

形态学图像处理的应用

数学形态学方法基于集合论思想,能定量地描述图像的形状结构,目前已广泛应用于图形图像处理领域,是进行几何形态分析的有效方法。本文首先介绍数学形态学的概念和定义,详细分析几类基本的形态学运算,然后研究形态学滤波器的结构和性质,并将其应用于指纹图像的去噪处理,对各个处理步骤以及处理结果进行分析,显示出形态学方法在图像去噪方面的良好性能。     

一种适合VLSI实现的H．264整像素运动估计算法

根据图像序列运动矢量的空间分布特性,针对H.264视频压缩提出了一种基于十字交叉和局部全搜索相结合的整像素运动估计快速算法.该算法首先在一维方向上对一个宏块中的所有子块同时进行运动搜索,只在最后的步骤选中的4个点的周围进行5×5的局部全搜索,减少了搜索点数,降低了运算复杂度.同时由于该算法将各种模式的搜索集成在一个搜索过程,并且搜索中前后两点在空间上是相邻的,非常有利于VLSI实现.利用JM12.0平台对该算法进行了仿真.结果表明,对于CIF序列,该算法较全搜索算法在保证图像质量的前提下,节省了92%的搜索时间.     

基于改进背景减法的视频图像运动目标检测

为解决传统背景减法在动态背景下受噪声干扰和运动目标检测准确性不高的问题,提出一种基于改进背景减法的视频图像运动目标检测方法。在背景建模阶段,为易于计算和提高检测精度,采用基于GMM的图像块均值方法重构背景模型;在目标检测阶段,采用数学形态学和小波半软阈值函数相结合的方法对检测到的运动目标进行去噪处理;在背景更新阶段,采用自适应背景更新方法进行背景更新。实验结果表明,所提方法提高了运动目标检测的准确性,验证了其有效性。     

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.     

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。     

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.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

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     

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.     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.