Research on the Method of DLG Production with DEM

doi:10.13474/j.cnki.11-2246.2017.0031

Abstract

Abstract: This paper focuses on the geomorphic feature extraction based on DEM while inuestigates its accuracy evaluation methods, principles and typical algorithms of terrain feature extraction on DEM. Furthermore, it summaried the technical characteristics of the DLG's production using DEM data, designed processes and conducted a production test. Tests show that DLG production with DEM can meet the needs of basic contour interval greater than 2 meters, the scale less than 1:2000 DLG production in the case of high-resolution DEM data, which can be used as a complementary technology of photogrammetry.

Key words: digital elevation model, topographic feature points, terrain characteristic line, digital line graph

CLC Number:

P283

WANG Yuan, LIANG Tao. Research on the Method of DLG Production with DEM[J]. 测绘通报, 2017, 0(1): 139-143.

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