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1.
覃俊 《微机发展》2000,10(4):38-39
小波变换可以有效的用于图像的特征提取,但二元小波变换的计算量随其阶数的增加呈指数级增长。本文提出小波变换并行算法,并对银河系列并行计算机上进行图像特征提取的有计算时间明显减少。  相似文献   

2.
讨论小波变换以及提升小波变换的基本原理和变换过程。利用2种变换分别实现了对同一图像库的特征提取,并利用支持向量机(SYM)进行分类。结果表明,与传统的小波变换相比,提升小波变换对于图像特征的提取同样是有效的,另外由于其独特的变换构造,使得计算量大大降低,计算时间显著减少,具有很大的实用价值。  相似文献   

3.
二进小波变换可以有效地用于图像特征提取,二维小波变换的计算量随阶数的增加至指数级增长,该文提出小波变换并行算法,适用于图像的边缘检测,并在银河—Ⅱ并行计算机上进行了实验,对结果进行了分析。  相似文献   

4.
二进小波变换可有效地用于图像特征提取,二维小波变换的计算量随阶数的增加呈指数级增长,该文提出小波变换并行算法,适用于图像的边缘检测,并在银河-Ⅱ并行计算机上进行了实验,对结果进行了分析。  相似文献   

5.
在分析不同分辨率图像空间特性的基础上,提出了一种基于多方向二进小波变换的图像特征提取方法.该方法首先对图像进行小波变换,然后由二进小波变换的模的局部极大值检测信号突变点位置及奇异性大小,实现图像的边缘特征提取.通过对遥感图像样本的仿真实验表明,基于多方向二进小波变换的图像边缘特征提取方法可以取得较好的边缘特征提取效果.  相似文献   

6.
基于内容的MRI脑肿瘤图像特征提取及检索方法   总被引:1,自引:0,他引:1  
医学图像检索中特征提取方法对检索的效果、性能具有重要影响,针对这个问题,设计了一个基于内容的医学图像检索系统.为了给医学图像检索系统的临床应用提供参考价值,该系统以哈佛大学医学院开发的脑肿瘤MRI医学图像数据库为背景,比较了颜色相关图、颜色矩、灰度共生矩阵、金字塔小波变换和树型小波变换这5个特征提取技术对MRI脑肿瘤医学图像的检索性能.实验结果表明树型小波变换和金字塔小波变换的检索效果较好.  相似文献   

7.
为了进一步提高各种光照条件下的人脸识别精度,提出了一种融合原始图像特征与Gabor小波变换图像特征的人脸识别方法。算法首先对原始图像进行小波变换;然后利用线性判别分析分别对原始图像与Gabor小波变换图像进行特征提取,得到一对特征距离值,最后,对这对距离值进行融合得到最后的分类结果。在FRGC库上的仿真表明,本文算法的识别率相比融合前有10%的提高。而且,当线性判别分析特征提取换成主成分分析等别的特征提取时,本文方法同样有效。  相似文献   

8.
啤酒瓶字符的圆周投影特征提取与识别   总被引:1,自引:0,他引:1       下载免费PDF全文
针对已分割完成的啤酒瓶凸性字符,提出了一种基于圆周投影变换的图像特征提取方法。以质心为极点将笛卡尔坐标系变换为极坐标系,进行圆周投影计算,将二维的字符图像变换为一维投影。利用小波变换(WT)和离散余弦变换(DCT),提取不同字符的有效特征。通过相同、相似字符特征提取实验,表明该方法具有较好的抗噪声能力和分类性能。  相似文献   

9.
医学图像自动特征提取是辅助医生进行快速诊断病情和进行基于内容的医学图像检索的关键技术。本文介绍了医学图像的分割方法,利用小波变换对线性矩进行分析,使计算量和数据量大大减少,提高了效率。  相似文献   

10.
提出了一种基于小波提升方案的虹膜识别算法。与传统基于卷积的小波变换方法相比,该方法在特征提取上计算简单,运算速度快,而且实现的是从整数到整数的变换,更有利于虹膜信息的量化。先对虹膜图像进行提升整数小波变换,然后对子图进行量化编码得到特征,采用屏蔽了噪声位的汉明距来进行模式识别。实验结果表明,基于提升整数小波变换的虹膜识别方法在识别率和等错率方面都能达到好的识别效果,在特征提取速度上也得到了较大提升,更能满足实时性的要求。  相似文献   

11.
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.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
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.  相似文献   

13.
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。  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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  相似文献   

17.
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.  相似文献   

18.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

19.
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.  相似文献   

20.
正The 34th Chinese Control Conference and SICE Annual Conference 2015(CCCSICE2015)is organized by the Technical Committee on Control Theory(TCCT)of Chinese Association of Automation(CAA)and the Society of Instrument and Control Engineers(SICE)of Japan,and locally organized by Hangzhou Dianzi University(HDU).  相似文献   

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