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1.
针对传统的基于图的流行排序显著性检测算法仅仅依赖边界背景先验显著图来提取前景种子,影响最后的排序结果,使得显著性检测结果较差的问题,提出结合凸包提取更精确的前景种子进行流行排序的算法.首先提取图像边界结点作为背景种子进行流行排序得到背景估计显著图,并将该显著图二值化得到粗略的前景区域;然后通过颜色增强的Harris角点检测算法获得图像角点,并用其构造粗略包含显著目标的凸包;最后将凸包和前景区域相结合提取更精确的前景种子进行流行排序得到最后的显著图.在3个公开的图像数据集上,与其他经典算法相比,该算法在PR曲线、MAE值和F-measure上均获得了提升.  相似文献   

2.
基于区域生长法提取二值图像中的连通区域   总被引:1,自引:0,他引:1  
标记二值图像连通区域是图像处理过程的基本算法,机器视觉和模式识别中常用此方法提取目标和分析目标几何特征。文章以人机交互方式获得初始种子点,增强种子点的可靠性,通过区域生长法提取二值图像中的连通区域。  相似文献   

3.
针对水下图像光照不均衡、对比度低、模糊不清以及噪声严重的问题,提出一种新的基于劳伦茨信息值的水下大坝裂缝检测算法。首先根据劳伦茨信息值去除不含有裂缝信息的图像块,接着提取连通域的圆形度、面积特征,采用k均值聚类算法,提取最终的裂缝区域。实验结果证明,本文算法能够在复杂的水下环境中准确、高效地提取大坝表面裂缝。  相似文献   

4.
论文在分析典型图像获取的硬件环境和常用图像检测算法的基础上,提出了一种基于图像处理的快速物体位置检测算法,阐述了算法的原理。该算法可以不通过传统的数字滤波、二值化、边缘提取处理,快速得到被检测物体的平面位置。  相似文献   

5.
《信息与电脑》2021,(1):56-58
目前,大多数图像检测算法在进行图像检测时都会遇到图像显著特征保留不完整的问题。本文针对这个问题对简单图像检测算法进行改进,提出一种基于ResNet残差网络与深度学习的自适应加权策略的图像检测算法。首先,将ResNet模型提取的图像特征点,按照多尺度和多方向的特点划分为高频分量和低频分量进行深度学习,高频分量为含有较多图像信息的特征点,低频分量为含有较少图像信息的特征点;其次,对这些特征点进行权值分配,对于高频分量,分配较高的权值,对于低频分量,本文提出一种基于图像显著性的自适应权重分配规则,用来保留图像中重要显著点;最后,利用这些高低频分量特征点重构检测图像。  相似文献   

6.
工程结构构件裂缝图像的处理与宽度测量   总被引:1,自引:0,他引:1  
在分析工程结构构件表面裂缝数字图像的基础上,考虑到图像数据量之大以及测量时间的要求,采用辅助图像定位裂缝图像处理区域,减少了图像处理的数据量,使图像处理时间可以减少一个或者两个数量级;然后在裂缝图像处理区域中进行图像分割提取出裂缝,对裂缝二值图像进行左右边界提取,进而得到裂缝宽度信息;实验结果表明,该算法能够比较稳定和准确地检测工程结构构件表面裂缝的位置、宽度等特征.  相似文献   

7.
路面裂缝图像存在多种复杂噪声,一般的滤波、去噪、边缘检测算法无法很好的将裂缝与路面背景分离。该文采用最小二乘法对图像进行灰度校正,可以将图像路面背景的直流分量去除,然后利用高斯函数匹配裂缝信号脊边缘使其突显,并使用阈值法将裂缝与背景分离,最后利用连通域标记的方法去除更多噪点达到裂缝位置的定位。  相似文献   

8.
针对不均匀光照和阴影等因素影响沥青路面图像中裂缝检测误识别问题,提出一种基于局部纹理特征的沥青路面裂缝检测方法。设计结构保持型Retinex算法将高频的纹理信号从低频光照信号和结构型纹理中分离,改进百分比阈值算法,获取高信噪比的裂缝区域二值图像,建立高置信裂缝段的特征匹配机制,利用圆形度、面积、不同置信裂缝的类间欧氏距离进行置信连通域邻域去噪,实现裂缝区域的提取。实验结果表明,该算法改善了不均匀光照和阴影情况下裂缝识别的准确性。  相似文献   

9.
桥梁表面光照不均匀、对比度低、噪声干扰严重,采集到的裂缝图片较灰暗且含有大量混合噪声,因而单一的滤波方法不能达到很好的去噪效果。针对该问题,提出一种基于自适应加权均值滤波算法来实现桥梁裂缝图像滤波。提出了基于灰度拉伸和自适应加权均值滤波相结合的桥梁裂缝识别方法。利用灰度拉伸均衡图像的阴影和光照,改进的均值滤波来滤除复杂噪声,采用Otsu法和基于连通域滤波进行裂缝图像的二值化并去除孤立噪声点,结合裂缝骨架图,定量分析裂缝面积,长度和宽度。测试结果表明,通过与传统均值滤波、中值滤波比较,这种组合了两种特征优点的方法将图像去噪质量平均提高了1.87 dB,图像均方误差平均降低了5.173%,识别效果优于两种滤波算法独立使用的情况。  相似文献   

10.
针对交通视频序列中的多车辆检测问题,提出了基于边缘检测的随机游走算法对多车辆视频进行精确车辆检测。首先利用背景差分结合边缘信息来检测运动车辆区域,针对粘连车辆问题提出了利用检测车辆区域的骨架结构自动完成有效的标记点的提取,把像素标记点作为随机游走算法中目标的种子点;利用种子点对多车辆进行随机游走分割,实现车辆自动检测。  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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