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    分水岭分割方法,是一种基于拓扑理论的数学形态学的分割方法,其基本思想是把图像看作是测地学上的拓扑地貌,图像中每一点像素的灰度值表示该点的海拔高度,每一个局部极小值及其影响区域称为集水盆,而集水盆的边界则形成分水岭。分水岭的概念和形成可以通过模拟浸入过程来说明。在每一个局部极小值表面,刺穿一个小孔,然后把整个模型慢慢浸入水中,随着浸入的加深,每一个局部极小值的影响域慢慢向外扩展,在两个集水盆汇合处构筑大坝,即形成分水岭。   分水岭的计算过程是一个迭代标注过程。分水岭比较经典的计算方法是L. Vincent提出的。在该算法中,分水岭计算分两个步骤,一个是排序过程,一个是淹没过程。首先对每个像素的灰度级进行从低到高排序,然后在从低到高实现淹没过程中,对每一个局部极小值在h阶高度的影响域采用先进先出(FIFO)结构进行判断及标注。   分水岭变换得到的是输入图像的集水盆图像,集水盆之间的边界点,即为分水岭。显然,分水岭表示的是输入图像极大值点。因此,为得到图像的边缘信息,通常把梯度图像作为输入图像,即   g(x,y)=grad(f(x,y))={[f(x,y)-f(x-1,y)]2[f(x,y)-f(x,y-1)]2}0.5   式中,f(x,y)表示原始图像,grad{.}表示梯度运算。
其他资源
"分水岭"的最佳翻译为"watershed",相关的英文翻译自动加入检索

Hierarchical WaterShed Tranformation

Hierarchical WaterShed Tranformation
HWST stands for "Hierarchical Watershed Transformation" which is an image segmentation technique. The HWST library was designed for a comfortable use as a JAI operator (Java Advanced Imaging).

使用分水岭检测法进行图像分割的代码 - image segmentation using iterative watersheding plus ridge detection

这个程序是使用分水岭检测法进行图像分割的代码 A demo for image segmentation using iterative watersheding plus ridge detection.

Quake II .NET

Quake II .NET
Download installer - 2.7 Mb Introduction In 1997, the computer gaming company id Software released a watershed first-person shooter game called QUAKE II,

Shuffled Complex Evolution (SCE-UA) Method

Shuffled Complex Evolution (SCE-UA) Method
pp 501-521, 1993. A paper entitled "Optimal Use of the SCE-UA Global Optimization Method for Calibrating Watershed Models", by Q. Duan, S. Sorooshian, & V.K. Gupta, Journal of Hydrology, Vol.158, 265-284, 1994,

showregions.m

showregions.m
SHOWREGIONS(L,N) displays the regions of the label matrix L corresponding to the indices listed in the vector N. Display selected regions of a label matrix. GUI, Display, Annotation. bwlabel, watershed, label matrix

SegmentIt

SegmentIt: Watershed Based Image Segmentation Tool. This interactive segmentation tool allows to switch back and forth between the watershed approaches (watershedSegmentIt: Watershed Based Image Segmentation Tool.

Demo files from Image Processing Webinar

Demo files from Image Processing Webinar
enhancement and intensity segmentation * Analyze shape of touching objects from topographic data using watershed segmentation and morphological operations * Isolate cancer cell using edge enhancement and

Easy to use Wrapper (DLL) for Intel's OpenCV Library with Examples

Easy to use Wrapper (DLL) for Intel's OpenCV Library with Examples
Download library (including OpenCV DLL's) - 1.6 MB Download library source project - 72.48 KB Download sample executables - Camera Calibration, Watershed Trafo, Pyramids, Hough Trafo, Histogram and much more.

The R Statistical Language and C#.NET: Foundations

The R Statistical Language and C#.NET: Foundations
I have used R in this fashion for doing wavelet analysis for price analytics, watershed modeling for acid mine drainage,

Build a Desktop GIS Application Using MapWinGIS and C#

Build a Desktop GIS Application Using MapWinGIS and C#
Download sample app - 81.5 KB Download GIS sample data - 85.8 KB Introduction A Geographic Information System is a from simple purposes like GIS data exploration to sophisticated purposes like watershed mapping.

GeoSolid3D

Modflow and Sutra. Uses GIS data of DEMs, geologic maps, and maps of river, watershed, recharge, and aquifer parameters.

label2rgb3D

RGB = LABEL2RGB3D(L) converts a 3D label matrix L, such as returned by WATERSHED, into a color RGB image. RGB = LABEL2RGB3D(L, MAP) defines the colormap to be used in the RGB image.

mwNSPECT

 mwNSPECT
with developing a MapWindow GIS version of the N-SPECT watershed model which currently is implemented as an ...the tool operates most accurately in medium-to-large watersheds having moderate topographic relief."

Hydrologic Analysis and Modeling Toolbox

is a collection of program modules to support the analysis and modeling of rainfall-runoff dynamics of watersheds.

MOHID Water Modelling System

 MOHID Water Modelling System
Project DescriptionMOHID Water Modelling System is a set of state-of-the-art numerical models to simulate the water cycle in an integrated approach (SurfaceSurface Water Bodies, Watersheds and Groundwater).

Divide And Do

Divide And Do is a hierarchical personal TO-DO list manager. It's goal is to boost productivity by allowing the addition of sub-tasks to any task, as well as categorizing tasks,

Divide by Zero

I am attempting to divide by zero in this project without causing an unhandled exception.I am attempting to divide by zero in this project without causing an unhandled exception.

Divide and Conquer

Perl scripts for the usage of the online game Divide and Conquer http://www.the-game.ruPerl scripts for the usage of the online game Divide and Conquer http://www.the-game.ru

Divide Files in Groups by Certain Order

Divide Files in Groups by Certain Order
For example, if we want to burn files into CDR, we may divide files into groups less than 670 MB. Each group can be put into a certain folder.

CButtonST v3.9 (MFC Flat buttons)

CButtonST v3.9 (MFC Flat buttons)
Download demo project - 902 Kb Download source - 19 Kb SoftechSoftware homepageSoftechSoftware Email, etc) // Return value: // Class version. Divide by 10 to get actual version.
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