In this paper, the methods of drawing contour line from terrain map, the vector of contour line and generating elevation data from vector data are discussed.
论述了从地形图中提取等高线、对等高线矢量化以及通过矢量数据生成高程数据的实现方法。
This paper introduces a simple but practical method to create high-quality contour line for grid data.
本文介绍了一种简单实用的基于规则格网数据绘制高质量等值线图形的方法。
The result of this method is content to contour line matching by building variant feature quality, constructing data structure, dealing with matching process's detail.
该方法通过提取曲线的相对不变特征量，构建数据结构，细致地处理匹配过程的细节，对轮廓曲线的部分匹配有着较为满意的匹配效果。
Data quality control is very important during the collection GIS basal data. It mainly introduces a method that applies rarefies and smooth to the automatic forming contour line.
在GIS基础数据的采集过程中，数据质量的控制非常重要。介绍了对自动生成的等高线进行圆滑和抽稀处理的一种方法。
A new approach to fit line is proposed. In this method, Hough transform and least square have been combined to process experiment data and the contour of binary images.
将霍夫变换与最小二乘法相结合，研究对实验数据和图像处理中的二值边缘图进行直线拟合的方法。
The results are compared with the data obtained by contour line method in Beilun Port. They coincide quite well.
计算成果与北仑港区地形测量资料比较一致。
The results are compared with the data obtained by contour line method in Beilun Port. They coincide quite well.
计算成果与北仑港区地形测量资料比较一致。
应用推荐