全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

一种新的山脊线和山谷线自动提取方法

DOI: 10.11834/jig.2001012260

Keywords: 山脊线,山谷线,方向剖面法,细线化算法,自动提取,GIS,地理信息系统,图象提取,数字图象

Full-Text   Cite this paper   Add to My Lib

Abstract:

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。该方法可以根据穿过高程数据点的各个方向的剖面线特征,自动识别DEM中可能的山脊点和山谷点;然后,用修正的Hilditch细线化算法筛选山脊点和山谷点;接着再把筛选后两两相邻的山脊点或山谷点连接起来,形成山脊线或山谷线的“雏形”;最后,将山脊线或山谷线“雏形”中封闭的三角形断开,并剔除过短的山脊线和山谷线。用真实DEM数据进行试验研究,其自动提取的山脊线和山谷线与高程等值线图反映的地形起伏基本一致,从而证明了该方法的有效性。

References

[1]  [1]Penn B S, Gordon A J, Wendlandt R F. Using neural networks to locate edges and linear features in satellite images [J].Computers and Geosciences, 1993,19(10):1545~1565.
[2]  [3]Hills J S. Outline extraction of microfossils in reflected light images[J]. Computers and Geosciences, 1988,14(4):481~488.
[3]  [5]Nelson D D, Full W E, Evangelista S. FORMA: A program in C to trace object peripheries for two dimensional shape analysis [J]. Computers and Geosciences, 1996,22(6):683~695.
[4]  [7]Martz L W. Jong E D. CATCH: A Fortran program for measuring catchment area from digital elevation models [J].Computers and Geosciences, 1988,14(5) :627~640.
[5]  [9]Martz L W. Garbrecht J. An outlet breaching algorithm for the treatment of closed depressions in a raster DEM[J]. Computers and Geosciences, 1999,25 (6): 835~844.
[6]  余生辰,刘大有,刘洪.山脊线和山谷线的计算机自动检测[J].中国图象图形学报,1999,4(8):693-696.
[7]  [2]Raghavan V, Masumoto S, Koike K et al. Automatic lineament extraction from digital images using a segment tracing and rotation transformation approach [J]. Computers and Geosciences, 1995,21(4) :555~591.
[8]  [4]Scott J G, Frank F. Edge detection in petrographic images using the rotating polarizer stage [J]. Computers and Geosciences,1998, 24(8):745~751.
[9]  [6]Knappertsbusch M W. A simple Fortran 77 prograrn for outline detection [J]. Computers and Geosciences, 1998, 24 (9):897~900.
[10]  [8]Martz L W. Garbrecht J. Numerical definition of drainage network and subcatchment areas from digital elevation models [J]. Computers and Geosciences, 1992,18(6):747~761.
[11]  [10]Chang YC, Song G S, Hsu S K. Automatic extraction of ridge and valley axes using the profile recognition and polygonbreaking algorithm [J]. Computers and Geosciences, 1998,24(1) :83~93.
[12]  [12]孙家广等.计算机图形学[M].北京:清华大学出版社,1998.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133