Description: 对于给定的初始点集P，有多种三角网剖分方式，其中Delaunay三角网具有以下特征：
1、Delaunay三角网是唯一的；
2、三角网的外边界构成了点集P的凸多边形“外壳”；
3、没有任何点在三角形的外接圆内部，反之，如果一个三角网满足此条件，那么它就是Delaunay三角网。
4、如果将三角网中的每个三角形的最小角进行升序排列，则Delaunay三角网的排列得到的数值最大，从这个意义上讲，Delaunay三角网是“最接近于规则化的“的三角网。-For given initial point set P, a variety of Triangulation, Delaunay triangulation has the following characteristics: 1, Delaunay triangulation is unique 2, the outer boundary of the triangle network constitutes a convex set of points P polygon " shell" 3, did not at any point inside the circumcircle of the triangle, on the contrary, if a triangular network satisfy this condition, then it is the Delaunay triangulation. 4, if the minimum angle of each triangle in the triangulation network in ascending order, Delaunay triangulation arrangement numerical maximum, in this sense, Delaunay triangulation is the closest to the rules of the " triangle net. Platform: |
Size: 112640 |
Author:maxpeach |
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Description: 输入一个二维的点集数组，然后就能将此点集的边界算出来，点集的边界分为凸多边形边界和凹多边形边界，实现凸多边形和凹多边形边界类，任意一个都行！-Enter a two-dimensional array of point set, and then will be able to set boundaries calculated, the boundary point set is divided into convex polygon concave polygon boundaries and borders, the realization of convex polygons and concave polygon border categories, any one will do! Platform: |
Size: 1024 |
Author:王文 |
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Description: 该程序包包含如下转换程序，可以完成激光雷达数据的多种格式的转换。
txt2las.exe
las2txt.exe
lasinfo.exe
las2shp.exe
shp2las.exe
las2tin.exe
las2dem.exe
las2iso.exe
lasboundary.exe
lasmerge.exe
las2las.exe
lasthin.exe
lasview.exe
laszip.exe-The program txt2las.exe converts LIDAR data from standard ASCII in various formattings to binary LAS format (version 1.2). The corresponding las2txt.exe turns binary LAS into human-readable and easy-to-parse textual representations. The tool lasinfo.exe prints out a quick overview of the contents of a LAS file, las2shp.exe turns binary LAS into ESRI s Shapefile format, shp2las.exe turns an ESRI s Shapefile into binary LAS, lasmerge.exe can merge several LAS files into one, las2las.exe allows extracting only last returns, only points within a bounding box, etc., lasthin.exe implements a simple point thinning algorithm, las2tin.exe triangulates the points of a LAS file into a TIN, las2dem.exe rasterizes them into a DEM, las2iso.exe extracts, optionally simplified, elevation contours, and lasboundary.exe computes a boundary polygon (i.e. a concave hull of the points). The little OpenGL viewer lasview.exe visualizes the contents of a LAS file and can also compute a TIN. It needs the GLUT32 Platform: |
Size: 7801856 |
Author:zhangboyd |
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Description: This code demomstrates an improved algorithm based on the local binary fitting (LBF) model
in Chunming Li et al s paper:
"Minimization of Region-Scalable Fitting Energy for Image Segmentation",
IEEE Trans. Image Processing, vol. 17 (10), pp.1940-1949, 2008.
Usage: These codes can be used for Matlab 7.0.4 or higher versions in Windows.
Run the Demos in the M-files for several test images. Once an image comes out, click
the mouse to generate a polygon as the initial contour: left click to get
a number of points, then right click to get the end point.
The number of iterations may need to be increased if the initial contour is too far
away from the desired object boundary. -This code demomstrates an improved algorithm based on the local binary fitting (LBF) model
in Chunming Li et al s paper:
"Minimization of Region-Scalable Fitting Energy for Image Segmentation",
IEEE Trans. Image Processing, vol. 17 (10), pp.1940-1949, 2008.
Usage: These codes can be used for Matlab 7.0.4 or higher versions in Windows.
Run the Demos in the M-files for several test images. Once an image comes out, click
the mouse to generate a polygon as the initial contour: left click to get
a number of points, then right click to get the end point.
The number of iterations may need to be increased if the initial contour is too far
away from the desired object boundary. Platform: |
Size: 269312 |
Author:Tina |
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Description: 种子算法，种子填充算法又称为边界填充算法。其基本思想是：从多边形区域的一个内点开始，由内向外用给定的颜色画点直到边界为止。如果边界是以一种颜色指定的，则种子填充算法可逐个像素地处理直到遇到边界颜色为止。
种子填充算法常用四连通域和八连通域技术进行填充操作。-Seed algorithm, seed filling algorithm, also known as the boundary filling algorithm. The basic idea is: starting a point within the polygon area within the external point of a given color painting until the border. If the border is a color specified, the seed filling algorithm processing pixel by pixel until it reaches the border color so far. Seed filling algorithm for the Four and eight-connected components connected domain technique the filling operation. Platform: |
Size: 11171840 |
Author:FanYang |
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Description: 在窗体上通过单击输入任意数个任意点，程序能自动的寻找到这些任意点的边界并且绘制出来。这就是所谓的盲人寻径法-By clicking on the form of any number of input at any point, the program can automatically find the boundaries of any of these points and drawn. This is called blind routing method Platform: |
Size: 84992 |
Author:aaa |
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Search - boundary point of polygon