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  • laplacian

    2020-12-09 06:25:17
    is pretty different from networkx code: ... seems to not be one, but rather, an implementation of the laplacian? <p>thanks</p><p>该提问来源于开源项目:microsoft/graspologic</p></div>
  • Laplacian

    2019-06-14 14:41:59
    Laplacian 参考文献 https://en.wikipedia.org/wiki/Second_derivative 拉普拉斯是将二阶导数推广到高维空间的一种方式。 Another common generalization of the second derivative is the Laplacian. This is the ...

    Laplacian

    参考文献

    https://en.wikipedia.org/wiki/Second_derivative

    拉普拉斯是将二阶导数推广到高维空间的一种方式。
    Another common generalization of the second derivative is the Laplacian. This is the differential operator 2\nabla^{2} defined by
    2f=2fx2+2fy2+2fz2\nabla^{2} f=\frac{\partial^{2} f}{\partial x^{2}}+\frac{\partial^{2} f}{\partial y^{2}}+\frac{\partial^{2} f}{\partial z^{2}}

    The Laplacian of a function is equal to the divergence of the gradient and the trace of the Hessian matrix.

    什么是Hessian matrix?什么是梯度的divergence?
    先不研究。

    展开全文
  • laplacian interpolation

    2016-06-23 01:16:02
    implement laplacian interpolation in matlab
  • Laplacian金子塔

    2015-06-05 17:31:15
    Laplacian金子塔,最后图像重建,很好的学习资源
  • laplacian-特征图:使用Laplacian特征图进行光谱嵌入
  • Laplacian Pyramid

    2013-05-22 10:55:24
    Laplacian Pyramid: 用MATLAB实现并改进的图像拉普拉斯金字塔分解以及隐藏信息嵌入的源码。程序展示了laplacian pyramid decomposition 在图像嵌入隐藏信息的重要作用。 Laplacian Pyramid: Based on MATLAB, ...
  • Laplacian pyramid

    2013-01-28 13:15:49
    Laplacian pyramid方法的matlab程序代码,对用Laplacian pyramid多尺度方法的同志肯定有用
  • Laplacian Smoothing

    2018-11-08 23:18:37
    Laplacian Smoothing Theory Discrete Laplacian Regular diffusion Volume preservation Non-shrinking Laplacian Fourier analysis Discrete Fourier Tranform Alternative: L....

     Laplacian Smoothing

    Theory

    Discrete Laplacian

    Regular diffusion

    Volume preservation

    Non-shrinking Laplacian

    Fourier analysis

    Discrete Fourier Tranform

    Alternative: Length-scaled Laplacian

    Solver

    Stability

    Explicit Solver

    Implicit Solver

    Signal analysis

    Result

    Shape-preserving Smoothing

    shape denoising

    Curvature flow

    Results on 3D Scanned Data

    Results on 3D Scanned Data

    Constraint Enforcement

    展开全文
  • laplacian edge detection

    2017-11-09 13:32:05
    This implements laplacian edge detection which involves convolution, zero crossing detection and Thresholding
  • OpenCV之Laplacian算子

    2021-01-07 03:07:02
    Laplacian算子也是计算图像梯度的一个利器。它相当于二阶Sobel算子的导数。咋来的不再从这里做解释,我们知道怎么用就行了。 Laplacian算子的卷积核是这样的: 其构造函数如下: cv2.Laplacian(src,ddepth) src:...
  • Laplacian matrix

    2019-12-16 22:00:39
    https://blog.csdn.net/ppdouble/article/details/91785697 https://en.wikipedia.org/wiki/Laplacian_matrix
    展开全文
  • opencv Laplacian

    2020-07-10 10:18:35
    以下代码完成Laplacian增强效果,opencv 实现 void edgeEnhance(cv::Mat& srcImg, cv::Mat& dstImg) { if (!dstImg.empty()) { dstImg.release(); } cv::Mat srcImg8U; cv::Mat sharpMat8U; cv...

    以下代码完成Laplacian增强效果,opencv 实现

    void edgeEnhance(cv::Mat& srcImg, cv::Mat& dstImg)
    {
    	if (!dstImg.empty())
    	{
    		dstImg.release();
    	}
    	    cv::Mat srcImg8U;
    		cv::Mat sharpMat8U;
    		cv::Mat sharpMat;
    		cv::Mat blurMat;
    		srcImg.convertTo(srcImg8U, CV_8U);
    		
    		cv::GaussianBlur(srcImg8U, blurMat, cv::Size(3, 3), 0, 0);
    
    		cv::Laplacian(blurMat, dstImg, CV_8U);
    		//dstImg = dstImg*10 ;
    		//dstImg.convertTo(dstImg, CV_8U);
    		cv::add(srcImg8U, dstImg, dstImg);
    }

     

    展开全文
  • 目录 1 边缘检测的基本原理 2 边缘检测算子分类 3 梯度 3.1 图像梯度 3.2 梯度算子 4 Roberts 算子 4.1 基本原理 4.2 代码示例 ...7 Laplacian 算子 7.1 基本原理 7.2 代码示例 8 小结 8...
  • Laplacian:0 (default) Laplacian:1 Laplacian:3 Laplacian:3 Laplacian:5 Laplacian:7 Laplacian:15 Laplacian:19  
  • Laplacian Eigenmaps

    2017-01-04 17:04:41
    机器学习降维算法四:Laplacian Eigenmaps 拉普拉斯特征映射 此文出自:http://www.cnblogs.com/xbinworld,http://blog.csdn.net/xbinworld   Laplacian Eigenmaps  继续写一点经典的降维算法,...
  • <p>Explanation of what choosing Laplacian mechanism for DP means and underlying assumption as well as recommendations on how noise is added and what type of data is desirable. <h2>Additional Context ...
  • added regularized laplacian

    2020-12-08 22:24:21
    <div><h4>What does this implement/fix? Explain your changes. <p>implements regularized laplacian embedding</p><p>该提问来源于开源项目:microsoft/graspologic</p></div>
  • 详解Laplacian矩阵

    2020-08-27 14:46:36
    1. 普通的Laplacian矩阵 对于给定n个顶点的简单图G, 它的一般 Laplacian matrix 定义如下: L=D−AL = D - AL=D−A 其中: D是图G的度矩阵,A为图G的邻接矩阵。 2. laplacian matrix的几种常见的表示形式 其中deg(vi)...
  • Laplacian Smooth

    2018-11-07 22:02:27
    概论 拉普拉斯平滑是一种平滑多边形网格的算法。对于网格中的每个顶点,基于局部信息(例如邻居的位置)选择新的位置,并且顶点被移动到那里。如果一个网格在拓扑上是一个矩形网格...如何利用Laplacian平滑一个曲线...
  • Laplacian函数

    千次阅读 2015-08-21 09:42:44
    Laplacian函数: 函数功能: 对图像求二阶导数,一般用于边缘突出 Laplacian 算子 的定义: 函数调用形式: void Laplacian(InputArray src, OutputArray dst, int ddepth, int ksize...
  • Opencv Laplacian算子

    千次阅读 2017-12-03 20:19:35
    Laplacian算子
  • Laplacian Matrix

    2016-05-11 10:32:41
    在数学的图论中,Laplacian Matrix 是用矩阵表示一个图。例如,它可以用来计算一个给定图的生成树(spanning trees)的数量定义给定一个简单的图 GG 含有 nn 个节点,它的 Laplacian Matrix 记为 Ln×nL_{n \times ...
  • 第二个最小的标准化Laplacian特征值及其应用的调查。 第二个最小的归一化拉普拉斯特征值(我简称为lambda2 )与图的连通性密切相关。 Cheeger不等式指出,一个较小的图可以很容易地分为两部分,而较大的一个图则是...
  • laplacian matrix

    千次阅读 2016-12-21 00:29:06
    As to the introduction of laplacian matrix, please refer to http://blog.csdn.net/seamanj/article/details/53026157 http://www.numerical-tours.com/matlab/ C:\TestMatlab\numerical-tours-...
  • <div><p>The error occurs only in parallel, with the config file laplacian_polar.cfg. <code>mpirun -np 2 feelpp_doc_laplacian_polar Using the config file laplacian.cfg or just with <code>./feelpp_doc_...
  • 降维总结之Graph LaplacianLaplacian EM

    千次阅读 2017-03-02 10:26:28
    上一篇文章介绍了 PCA, Factor Analysis, LLE 等三个算法, 按照顺序这篇文章就该讲到 Laplacian Eigenmaps 了,但是作者认为直接讲 Laplican Eigenmaps 好像有点太干了, 不太容易理解, 请允许我夹带点私货, 先从 ...
  • But I want to know for the Laplacian method, is there any parameters that I can alter so it can produce a different result? Such us, every single time we press 'space', how many iterations of...

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