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With the advancement of science and technology, some new theories and new ways emerged gradually, some of them merged with specific theoretical tools, this specific theoretical tools include mathematical morphology, fuzzy techniques, neural networks, wavelet and so on. Secondly, in this paper, it described and analyzed the segmentation method based on the edge in the domain of image segmentation in detail. It did experiments on several edge detection operators using MATLAB, it summarized the advantage and the shortcoming of traditional edge detection operators, and the operating environment. On the basis of the experimental analysis, it implemented an edge location more precise, more efficient operating speed edge extraction method——Template Vector. In this method, it optimized differential approximate calculation of first differential operators the paper mentioned. After experimented on this edge extraction method, contracted with the traditional methods, the edge outline is extracted more accurately and more exquisitely, furthermore, it retained the object outline furthest, and achieved more satisfied edge extraction result.

其次,对图像分割领域中常用的基于边缘的分割方法进行了详细的研究与分析,对各种边缘检测算子进行了MATLAB环境下的实验,分析总结了各种传统边缘检测算子的优缺点和适应环境,并针对传统边缘检测算子在处理显微图像时的缺陷,在实验分析的基础上研究并实现了一种边缘定位更加精确、运算速度更加快捷的边缘提取方法——模板向量算法,在该算法中,对文章提到的一阶微分算子中微分的近似计算作进一步优化,经过对该边缘提取方法进行实验,其结果与传统方法相比,轮廓提取更为精确细腻,且最大程度的保留了图像中物体(目标个体或者明显噪声点)的轮廓,得到了比较理想的边缘提取效果。

Its main tasks are to deal with binary images, gray scale processing, and the use of Sobel, Canny, Roberts, Laplacan operator of four digital image edge detection, the results show that: Roberts operator more precise positioning, but more sensitive to noise, Sobel operator son of gray-scale images with low noise gradient has a better detection of the effect of Laplacian can be detected in the vast majority of the edge did not appear at the same time the basic pseudo-edge, the edge can be precisely targeted, Canny operator is the traditional first-order differential operator in one of the best operator to detect the best edge detection, edges clear, make clear at a glance.

主要工作包括图像的二值处理,灰度处理,并运用Sobel、Canny、Roberts、Laplacan四个算子实现数字图像边缘检测,结果表明:Roberts 算子定位比较精确,但对噪声比较敏感,Sobel算子对灰度渐变低噪声的图像有较好的检测效果,拉普拉斯算子可以检测出绝大部分边缘,同时基本没有出现伪边缘,可以精确定位边缘,Canny算子是传统一阶微分算子中最好的算子之一,检测边缘检测的效果最好,边缘轮廓清晰,使人一目了然。问题补充:摘要英文翻译,不要在线翻译的,是在线等!急啊!!!!谢谢!!!!

Its main tasks are to deal with binary images, gray scale processing, and the use of Sobel, Canny, Roberts, Laplacan operator of four digital image edge detection, the results show that: Roberts operator more precise positioning, but more sensitive to noise, Sobel operator Gradient gray son of low-noise images have a better detection of the effect of Laplacian can be detected in the vast majority of the edge did not appear at the same time the basic pseudo-edge, the edge can be precisely targeted, Canny operator is the traditional first-order differential operator in one of the best operator to detect the best edge detection, edges clear, make clear at a glance

主要工作包括图像的二值处理,灰度处理,并运用Sobel、Canny、Roberts、Laplacan四个算子实现数字图像边缘检测,结果表明:Roberts 算子定位比较精确,但对噪声比较敏感,Sobel算子对灰度渐变低噪声的图像有较好的检测效果,拉普拉斯算子可以检测出绝大部分边缘,同时基本没有出现伪边缘,可以精确定位边缘,Canny算子是传统一阶微分算子中最好的算子之一,检测边缘检测的效果最好,边缘轮廓清晰,使人一目了然。不要在线翻译的那种!在线等!!急!!!谢谢!!!

The paper gives a detailed introduction to the classification and mothed of image edge detection from the traditional point of view,that is,the robert operator based on the maximum gradient detection,the sobel operator,the prewitt operator,the canny orerator,the laplancan operator based on the detection of second derivative of the zero-crossing point and then log operator.The paper makes a summary and analysis to the principles and applications,advantages and disadvantages of each algorithms and operators. Especially the canny operator.

本文首先介绍了图像边缘检测在国内外的发展,图像边缘检测的重要性及意义,阐述了图像边缘检测的原理,从传统的角度详细介绍了的图像边缘检测的分类及方法,即基于检测梯度最大值的robert算子,sobel算子,prewitt算子,canny算子,基于检测二阶导数的零交叉点的laplacan算子及log算子,对各种算法和算子的原理及用法及优缺点做了总结和分析尤其是canny算子。

Pixel Edge Operator right image edge extraction, the simple realization of the right image processing friends useful.

sobel边缘算子对图像进行边缘提取,简单实现,对图像处理的朋友大有裨益。

Pixel Edge Operator right image edge extraction, the s...

sobel边缘算子对图像进行边缘提取,简单实现,对图像处理的朋友大有裨益。

Then, a variational method for the design of stereo matching algorithm is presented.

根据这些数学工具,构造了Laplace边缘算子的微分不变量。

In this project, we study the theory of higher order differential equations in Banach spaces and related topics. We solve an open problem put forward by two American Mathematicians and two Italian Mathematicians concerning wave equations with generalized Weztzell boundary conditions, introduce an existence family of operators from a Banach space $Y$ to $X$ for the Cauchy problem for higher order differential equations in a Banach space $X$, establish a sufficient and necessary condition ensuring $ACP_n$ possesses an exponentially bounded existence family, as well as some basic results in a quite general setting about the existence and continuous dependence on initial data of the solutions of $ACP_n$ and $IACP_n$. We set up quite a few multiplicative and additive perturbation theorems for existence families governing a wide class of higher order differential equations, regularized cosine operator families, regularized semigroups, and solution operators of Volterra integral equations, obtain classical and strict solutions having optimal regularity for the inhomogeneous nonautonomous heat equations with generalized Wentzell boundary conditions, gain novel existence and uniqueness theorems,which extend essentially the existing results, for mild and classical solutions of nonlocal Cauchy problems for semilinear evolution equations, present a new theorem with regard to the boundary feedback stabilization of a hybrid system composed of a viscoelastic thin plate with one part of its edge clamped and the rest-free part attached to a visocelastic rigid body. Also we obtain many other research results.

在本研究中,我们对Banach空间中的高阶算子微分方程的理论以及相关理论进行了深入研究,解决了由美国和意大利的四位数学家联合提出的一个关于广义Wentzell边界条件下的波动方程适定性的公开问题,恰当地定义了Banach空间中的高阶算子微分方程Cauchy问题的算子存在族及唯一族,建立了齐次和非齐次高阶算子微分方程Cauchy问题适定性的判别定理,获得了关于高阶退化算子微分方程的算子存在族、正则余弦算子族、正则算子半群、Volterra积分方程解算子族的乘积扰动和混合扰动定理,得到了关于以依赖于时间的二阶微分算子为系数的一大类非自治热方程非齐次情形下的时变广义Wentzell动力边值问题的古典解、严格解的最大正则性结果,获得了半线性发展方程非局部Cauchy问题广义解和经典解存在唯一的判别条件,从实质上推广了现有的相关结果;得到了一部分边缘固定而另一部分附在一粘弹性刚体上的薄板构成的混合粘弹性系统的边界反馈稳定化的新稳定化定理,还建立了一系列其他研究结果。

VC prepared by an image processing procedures : it can achieve image edge detection and contour extraction, Edge Detection Operator : Robert operator, bobel operator, prewitt operator, kirsch operator, gauss - laplace operator. Hough line detection, contour extraction, seed testing and contour tracking.

用VC编写的一个图像处理的程序:它可以实现图像的边缘检测和轮廓提取,边缘检测算子包括:Robert算子、bobel算子、prewitt算子、kirsch算子、gauss-laplace算子。hough直线检测、轮廓提取、种子检测和轮廓跟踪。

Then we sharpen the images with Laplace operator. In the course of edge detection, we detect images' edge by using Roberts operator, Sobel operator, Robinson operator, LoG operator and Canny operator, and compare the results of images' edge. The result shows, Canny edge detection operator precede other operators obviously.

在对图像进行边缘检测时,对经过预处理过的人脸图像分别用Roberts边缘算子、Sobel边缘算子、Robinson边缘算、LoG边缘算子、Canny边缘算子进行边缘检测,然后,对边缘检测算子进行了研究改进,并对检测结果进行了讨论比较,结果表明,Canny边缘算子的检测结果明显优于其它几个算子。

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