山脊线

利用分段三次多项式提取山谷线和山脊线

Derivation of valley line and ridge line by segmental cubic polynomials

针对当前山脊线和山谷线的提取都是从其几何特征或物理特征的单一方面进行研究和设计，不能够利用隐含在数字化资料中的山脊线和山谷线的有效信息的弊端；

The usual method for extracting ridge line and valley line is based on geometric and physical character which is difficult to use the information hiding in the digital data .

数字高程模型（DEM）是记录地形起伏变化的资料，当中蕴含着各种地形地貌的结构信息，其中包括山谷线和山脊线。

Digital Elevation Model ( DEM ) records topographic fluctuation changes and in which it contains various topographic construct information including valley lines and ridge lines .

北坡NDVI变化斜率最大的区域主要在最北段和山脊线附近，山脊线附近的植被覆盖明显增加，南坡NDVI变化斜率区域分布较为均匀，东南地区显著增加的区域相对较高。

North Slope largest regional NDVI changes , mainly in the northern section of the slope and ridgeline near the ridgeline near vegetation cover increased significantly change the slope of the southern slope of NDVI regional distribution is more uniform , relatively high significant increase in the Southeast region .

基于共轭地表曲面的山脊线和山谷线提取方法的研究

Extraction of ridge and valley from DEM based on conjugate terrain

提出了一种基于地形梯度方向的山脊线和山谷线的提取方法，该方法从理论上进一步完善了地形高程断面极值法。

The new method perfect terrain profile analysis method theoretically .

基于矢量等高线数据提取山脊线山谷线的研究

A Study of Extracting Terrain Feature Lines Based on Vector Contour Data

基于地形梯度方向的山脊线和山谷线的提取

Extraction of Ridge and Valley from DEM Based on Gradient

一种新的山脊线和山谷线自动提取方法

A New Method for Automatic Extraction of Ridge and Valley Axes from DEM

我绝不去山脊线高中！

No way I 'm going to ridgeline !

你自己也说过，山脊线高中的女孩更火辣性感。

The girls are so much hotter , I mean , you said it yourself .

山脊线高中开枪者母亲的采访。

Mother of a ridgeline school shooter .

由于山谷线和山脊线是地形起伏变化的分界线，因此它们对于地形地貌研究有着重要的意义；

As valley lines and ridge lines are boundaries defining topographic fluctuation changes , they are important to topographic research ;

把马丘比丘的山脊线左转90度，像人类脸孔的侧面。

Take a90 degree turn at the mountain ridge of Machu Picchu and to see the outline of a human face .

提出了一种新的自动提取山脊线和山谷线的方法&方向剖面法。

In this paper , a new method for automatic extraction of ridge and valley axes from DEM , named as Directional Profile Approach ( DPA ), is proposed .

同时山谷线和山脊线又是汇水线和分水线，所以它们在工程应用方面也有着特殊的意义；

What 's more , valley lines and ridge lines are respectively water collection lines and water divide lines , so they are also of special meaning to engineering application .

研究结果如下：（1）三峡库区消落带生态系统范围界定在水体&第一层山脊线之间的带状区域。

The results are as follows : ( 1 ) The water-level-fluctuating zone of Three Gorges Reservoir ecological system is defined in the " water-the first layer ridge line " between belt in the area .

广西苍梧县山脊防火线立地分类及其立地质量评价

Site Classification and Quality Evaluation of Fire Proof Belt of Ridge of Cangwu County , Guangxi Province

利用等高线数据提取山脊（谷）线算法研究

Research on the Algorithm of Extracting Ridge and Valley Lines Using Contour Data