Automatic simplification and merging algorithm of isobaths based on surface simplification

Lulu Tang; Lihua Zhang; Jian Dong; Shuaidong Jia

doi:10.1117/12.2667680

10 February 2023 Automatic simplification and merging algorithm of isobaths based on surface simplification

Lulu Tang, Lihua Zhang, Jian Dong, Shuaidong Jia

Proceedings Volume 12552, International Conference on Geographic Information and Remote Sensing Technology (GIRST 2022); 125523B (2023) https://doi.org/10.1117/12.2667680
Event: International Conference on Geographic Information and Remote Sensing Technology (GIRST 2022), 2022, Kunming, China

Abstract

In view of the current situation that most of the current isobaths automatic simplification algorithms are aimed at a single depth contour and it is difficult to unify the automatic simplification and merging process, we propose an automatic simplification and merging algorithm of isobaths based on surface simplification. Firstly, the basic principles of surface simplification and rolling ball synthesis of seafloor topography are analyzed, and then high-precision digital depth model (DDM) is constructed using nautical chart data as the original three-dimensional data; Then, on this basis, the high-precision DDM is simplified by using the rolling ball transform; Finally, based on the simplified DDM, the isobaths are extracted reversely to realize the purpose of automatic simplification and merging. The experimental results show that: in typical regions, the proposed method can automatically identify and process the regions to be simplified and merged, and our method also improves the automatic synthesis quality of isobaths.

Citation Download Citation

Lulu Tang, Lihua Zhang, Jian Dong, and Shuaidong Jia "Automatic simplification and merging algorithm of isobaths based on surface simplification", Proc. SPIE 12552, International Conference on Geographic Information and Remote Sensing Technology (GIRST 2022), 125523B (10 February 2023); https://doi.org/10.1117/12.2667680

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KEYWORDS

Data modeling

Cartography

Oceanography

Safety

Coastal modeling

3D modeling

Mathematical modeling

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