|
|
- 2018
利用特征显著度提取地形特征线的方法
|
Abstract:
针对现有的地形特征线提取方法不能根据特征强弱对提取结果进行方便的筛选控制的问题，提出了一种基于特征显著度的山脊和山谷线提取方法。首先，对数字高程模型数据进行高斯滤波和下采样；然后，通过全局断面扫描确定特征点，并根据高度、高度落差和坡度计算特征显著度，在进行特征延伸后构造特征图，利用最小生成树算法得到特征森林；随后进行枝干分解并计算各枝干的特征显著度，根据特征显著度进行枝干裁剪；最后，通过尾钩剔除、位置修正和平滑等后处理得到最终特征线。实验结果表明，该方法能提供给用户方便有效的手段以根据特征显著度对特征进行筛选控制，提取的特征线与实际地形相符，有良好的抗噪能力且能较好地处理平坦地形特征
| [1] | Tribe A. Automated Recognition of Valley Lines and Drainage Networksfrom Grid Digital Elevation Models:A Review and A New Method[J]. <em>Journal of Hydrology</em>, 1992, 139(1-4):263-293 |
| [2] | Zhou Yi, Tang Guoan, Zhang Ting, et al. A New Method for the Derivation of Terrain Skeleton Lines Based on Wire-Like Analysis Window in Grid DEMs[J]. <em>Bulletin of Surveying and Mapping</em>, 2007(10):67-69(周毅, 汤国安, 张婷, 等. 基于格网DEM线状分析窗口的地形特征线快速提取方法[J]. 测绘通报, 2007(10):67-69) |
| [3] | Huang Peizhi, Liu Zehui. Extraction of Ridge and Valley from DEM Based on Gradient[J]. <em>Geomatics and Information Science of Wuhan University</em>, 2005, 30(5):396-399(黄培之, 刘泽慧. 基于地形梯度方向的山脊线和山谷线的提取[J]. 武汉大学学报·信息科学版, 2005, 30(5):396-399) |
| [4] | Bulterman R W, van der Sommen F W, Zwaan G, et al. On Computing a Longest Path in a Tree[J]. <em>Information Processing Letters</em>, 2002, 81(2):93-96 |
| [5] | Zhu Qing, Zhao Jie, Zhong Zheng, et al. The Extraction of Topographic Patterns Based on Regular Grid DEMs[J]. <em>Acta Geodaetica et Cartographica Sinica</em>, 2004, 33(1):77-82(朱庆, 赵杰, 钟正, 等. 基于规则格网DEM的地形特征提取算法[J]. 测绘学报, 2004, 33(1):77-82) |
| [6] | Chen Yongliang, Liu Dayou. A New Method for Automatic Extraction of Ridge and Valley Axes from DEM[J]. <em>Journal of Image and Graphics</em>, 2001, 6A(12):1230-1234(陈永良, 刘大有. 一种新的山脊线和山谷线自动提取方法[J]. 中国图象图形学报, 2001, 6A(12):1230-1234) |
| [7] | Chang Y C, Song G S, Hsu S K. Automatic Extraction of Ridge and Valley Axes Using the Profile Recognition and Polygon Breaking Algorithm[J]. <em>Computers & Geosciences</em>, 1998, 24(1):83-93 |
| [8] | Zhou H, Sun J, Turk G. Terrain Synthesis from Digital Elevation Models[J]. <em>IEEE Transactions on Visualization and Computer Graphics</em>, 2007, 13(4):834-848 |
| [9] | Tasse F P, Gain J, Marais P. Enhanced Texture-Based Terrain Synthesis on Graphics Hardware[J]. <em>Computer Graphics Forum</em>, 2012, 31(6):1959-1972 |
| [10] | Xiong Hanjiang, Li Xiujuan. A New Method to Extract Terrain Feature Lines[J]. <em>Geomatics and Information Science of Wuhan University</em>, 2015, 40(4):498-502, 515(熊汉江, 李秀娟. 一种提取山脊线和山谷线的新方法[J]. 武汉大学学报·信息科学版, 2015, 40(4):498-502, 515) |
| [11] | Guo Wanqin, Liu Shiyin, Yu Pengchun, et al. Automatic Extraction of Ridgelines Using Drainage Boundaries and Aspect Difference[J]. <em>Science of Surveying and Mapping</em>, 2011, 36(6):210-212(郭万钦, 刘时银, 余蓬春, 等. 利用流域边界和坡向差自动提取山脊线[J]. 测绘科学, 2011, 36(6):210-212) |
| [12] | Kong Yueping, Fang Li, Jiang Yonglin, et al. A New Method of Extracting Terrain Feature Lines by Morphology[J]. <em>Geomatics and Information Science of Wuhan University</em>, 2012, 37(8):996-999(孔月萍, 方莉, 江永林, 等. 提取地形特征线的形态学新方法[J]. 武汉大学学报·信息科学版, 2012, 37(8):996-999) |
