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1.
欧锁阳  冯琦  张堃 《计算机应用研究》2012,29(10):3990-3992
为了缩减归一化割算法中权值矩阵的规模,提出了一种融合对数极坐标和归一化割的图像分割算法。首先将均匀采样的图像映射到对数极坐标系下,然后进行归一化割运算,达到减少时间复杂度、提高算法执行效率的目的。实验结果表明该方法能够取得理想的分割效果。  相似文献   

2.
《软件》2019,(4):81-83
分水岭算法是一种常用的图像分割方法,由于分水岭算法是基于的图像灰度梯度,对噪声很敏感,直接运用分水岭算法分割图像,很容易产生过分割。为了去除过度分割,为此本文提出了一种改进的分水岭分割方法,首先利用中值滤波消除噪声,再用形态学基本运算得到梯度图像,然后利用形态学开、闭操作重建梯度图像,最后通过实验证明,基于数学形态学的分水岭算法分割医学图像效果优于传统的分水岭算法。  相似文献   

3.
针对棉花图像中存在阳光直射和阴影遮挡等因素而导致图像分割精度低、效果差的问题,提出一种改进分水岭的图像分割算法。该方法对原始图像进行各向异性扩散去噪预处理;利用鲁棒中值估计对形态学多尺度梯度图像进行硬阈值法梯度修正;对修正后的图像采用分水岭算法进行分割,对过分割的区域采用基于L*a*b*彩色空间的颜色相似度方案进行区域合并,从而将棉花提取出来。实验结果表明,提出的算法对阳光直射及阴影遮挡等干扰条件下的棉花图像分割能取得较好的效果。  相似文献   

4.
为了消除基于谱聚类的归一化切分图像分割中聚类参数对分割结果的约束,提出了一种基于蚁群优化的多层图划分算法来进行归一化切分,进而对彩色自然景观图像进行分割.该算法将代表图像的相似度图作为蚁群的栖息环境,在归一化割准则的指导下,通过蚂蚁的觅食行为将相似的顶点逐渐聚集在一起,从而以多层的方式完成图划分.为了降低图像分割的计算量,利用超像素对图像进行预处理.实验对比表明,该算法消除了归一化切分分割结果对聚类参数的依赖,并提高了归一化切分分割的准确性和速度.  相似文献   

5.
为了改善传统分水岭算法中的过分割现象,考虑到反射亮光对图像的干扰,提出了一种相对颜色空间下的梯度分层重构的分水岭分割算法。首先将彩色图像由RGB空间转换到与反射亮光无关的相对颜色空间;其次结合图像信息熵获得彩色图像的梯度图像;然后根据梯度直方图的分布信息,对梯度图像进行分层重构;随后采用形态学极小值标定技术对合并后的梯度图像进行强制标定;最后对修正后的图像进行分水岭分割。对不同类型的图像进行分割实验,实验结果显示该算法相比其他3种典型的分水岭算法在分割区域个数、运行时间及区域间差异性指标(DIR)上的表现都较为突出。该算法更符合人眼对图像的感知,分割效果和性能较好,具有较高的鲁棒性和实用性。  相似文献   

6.
贺振华  黄英  刘林 《工业控制计算机》2013,26(5):99-100,103
分水岭算法在图像处理领域得到了广泛的应用,但单独使用分水岭进行图像分割会产生过分割现象,难以得到令人满意的结果。针对分水岭算法存在的过分割问题,提出一种改进的分水岭算法,能有效的抑制过分割现象。首先对输入图像进行平滑滤波处理并计算该图像的多尺度灰度梯度图像;然后提出基于多阈值分割的方法消除无效的梯度信息;再进行分水岭变换并对相似的区域进行合并。实验结果表明,提出的改进的分水岭算法能有效地处理过分割问题,比传统的分水岭算法得到的分割效果要好很多。  相似文献   

7.
针对传统分水岭分割方法存在的过分割问题,提出了一种改进的桥梁图像分水岭分割算法。该算法首先对桥梁裂缝图像进行高低帽形态学滤波,并运用多尺度梯度算子提取梯度图像,在分水岭变换之前使用自适应的标记提取方法对区域极小值进行标定,然后对初步分水岭分割的过分割区域使用改进fisher距离的区域合并算法进行合并,取散度作为停止度量。实验表明,该算法减少了分水岭算法的过分割现象,提高了桥梁图像分割的精确性,具有很好的鲁棒性和适应性。  相似文献   

8.
图像分割是从图像处理到图像分析的关键步骤之一。在改进了基于地形学距离的分水岭算法的基础上,提出了一种结合图像信息熵、形态学梯度与区域合并的图像分割方法。该算法首先利用信息熵在RGB颜色空间中对彩色图像求其形态学梯度,然后对彩色梯度图进行分水岭分割,最后对分水岭产生的过分割现象进行区域合并。通过Matlab对图像进行实验,结果证明该算法不仅能够减少分水岭算法的过分割现象,而且还提高了图像分割的精确性,同时在图像分割时具有很好的鲁棒性和适应性。  相似文献   

9.
基于分水岭算法的MELK图像分割*   总被引:2,自引:1,他引:1  
提出一种基于分水岭算法的MELK图像分割方法,以解决信息量较小的MELK图像分割问题。综合应用多种技术以避免分水岭算法的过分割问题。首先应用高斯低通滤波器对MELK图像进行增强;采用加权差分算子求取梯度图像;应用Ostu方法进行对梯度阈值化,并进行分水岭变换;最后,应用RAG区域合并方法完成MELK图像分割。实验结果表明,该分割方法能够有效地分割信息量较小的MELK图像。  相似文献   

10.
针对分水岭图像分割算法中的过分割问题,提出了一种结合SUSAN算子和分水岭算法进行图像分割的方法.该方法首先用SUSAN算子对原始图像进行划分,检测出图像中不包含边界的区域,然后将检测结果作为标记符在梯度图像上进行标记,最后用分水岭算法对带标记的梯度图像进行分割.试验结果表明,该方法具有较好的分割效果.  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.
《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   

18.
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   

19.
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   

20.
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.  相似文献   

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