摘要
分形理论对于海岸线性质的研究具有重要作用,分形插值方法作为处理此类问题的全新手段,可以根据少量数据刻划景物特征,产生预期的景物图像。扼要介绍了分形插值函数,据此可得到景物曲线的分形模拟图像、分维和长度。在此基础上,结合Visual Basic环境和国产全组件式GIS软件SuperMap Objects组件开发平台,开发相应的分形插值计算系统,然后以天津市海岸线为实例,实现海岸线的分形模拟图像,计算出海岸线分维,并归算得到海岸线的实际分形长度。结果表明,应用分形插值系统可以一举获得海岸线的分形模拟图像、分维和长度。
Fractal theory has been one of the most important tools for studying coastline character. Fractal interpolation, as a new method to deal with such problems, may create prospective scene image based on a few data of the characteristics of the scene. The fractal interpolation functions are introduced briefly that can deduce the fractal simulation image and the fractal dimension and length of scene curve. On the basis of the above discussion, the fractal interpolation calculation system is developed by selecting Visual Basic as development environment and SuperMap Objects as ActiveX. And taking Tianjin coastline as an example, we use the system to establish fractal simulation image of the coastline, to calculate fractal dimension of the coastline and length of the coastline. The results show that the fractal simulation image, fractal dimension and length of the coastline can be obtained at one fling by applying fraetal interpolation function.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2008年第4期65-71,共7页
Marine Geology & Quaternary Geology
基金
国土资源部基金项目(40201052)
“天津宁河石综合地质调查研究”津国防任项目([2004]010)
关键词
GIS
海岸线
分形图像
分维
分形插值函数
GIS coastline fractal image fractal dimension fraetal interpolation function Tianjin
