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Research on Constructing Contoursfrom Regular Terrain GridsContaining Invalid Data 被引量:1

Research on Constructing Contoursfrom Regular Terrain GridsContaining Invalid Data
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摘要 A new method for constructing contours from complicated terrain elevation grids containing invalid data is put forward. By using this method, the topological consistency of contours in groups can be maintained effectively and the contours can be drawn smoothly based on boundaries pre-searching and local correction. An experimental example is given to demonstrate that the contours constructed by this method are of good quality. A new method for constructing contours from complicated terrain elevation grids containing invalid data is put forward. By using this method, the topological consistency of contours in groups can be maintained effectively and the contours can be drawn smoothly based on boundaries pre-searching and local correction. An experimental example is given to demonstrate that the contours constructed by this method are of good quality.
作者 粟卫民 吴凡
出处 《Journal of China University of Mining and Technology》 2004年第2期138-142,共5页 中国矿业大学学报(英文版)
基金 NationalSignificantScienceFoundationofSurveying&MappingofChina(1469990324231)
关键词 CONTOURS TERRAIN ELEVATION grid INVALID DATA curves INTERSECTION topological consistency contours terrain elevation grid invalid data curves intersection topological consistency
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