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Yuanfu Li, Qun Sun, Wenyue Guo, Qing Xu and Xinming Zhu
Contour line group simplification methods can effectively preserve terrain features during map making and producing. This process involves two main steps, namely terrain feature line extraction and contour bend selection. The terrain feature line extract...
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Guoqing Chen and Haizhong Qian
The extraction of skeleton lines of buildings is a key step in building spatial analysis, which is widely performed for building matching and updating. Several methods for vector data skeleton line extraction have been established, including the improved...
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Jinqiang Bi, Miao Gao, Wenjia Zhang, Xuefeng Zhang, Kexin Bao and Quanbo Xin
Despite being a minor probability event, marine accidents can cause serious consequences such as casualties, environmental damage, and even massive economic losses. As an important part of the marine traffic safety system, the evaluation of navigation sa...
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Diao Lin, Ruoxin Zhu, Jian Yang and Liqiu Meng
The transit catchment area is an important concept for public transport planning. This study proposes a methodological framework to generate network-based transit catchment areas by walking. Three components of the framework, namely subgraph construction...
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Xianjin He, Min Deng and Guowei Luo
Building pattern recognition is fundamental to a wide range of downstream applications, such as urban landscape evaluation, social analyses, and map generalization. Although many studies have been conducted, there is still a lack of satisfactory results,...
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Chengming Li, Yong Yin, Pengda Wu and Wei Wu
Extraction of the skeleton line of complex polygons is difficult, and a hot topic in map generalization study. Due to the irregularity and complexity of junctions, it is difficult for traditional methods to maintain main structure and extension character...
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Peng Wu, Shuqing Zhang, Huapeng Li, Patricia Dale, Xiaohui Ding and Yuanbing Lu
The grouping of parcel data based on proximity is a pre-processing step of GIS and a key link of urban structure recognition for regional function discovery and urban planning. Currently, most literature abstracts parcels into points and clusters parcels...
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Yong Yin, Chengming Li and Pengda Wu
Filling dot maps with a regular pattern is a key step in visual representation of land use data. The traditional methods cannot adapt well to shape features of complex areas, leading to an unreasonable symbol arrangement in the inner region and area boun...
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