An improved map-symbol model to facilitate sharing of heterogeneous qualitative map symbols

Wu, Minxian; Zhu, A‐Xing; Zheng, Peibei; Zhang, Xueying

doi:10.1080/15230406.2015.1102083

Cited by 11 publications

(4 citation statements)

References 9 publications

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“…As data acquisition techniques have developed, a large volume of geographic data has been collected, and more is being gathered continuously. These raw data are often symbolized for perception, cognition and communications [1]. Although geographic data are gathered at specific scales, they can be simplified based on zoom level, where each zoom level emphasizes a different level of detail (LoD) [2].…”

Section: Introductionmentioning

confidence: 99%

“…In the third group, hardware-accelerated methods, the speed of both cartographic simplifications and rendering are improved by using hardware-accelerated techniques such as chain-based tessellation [1], graphics processing unit (GPU)-based rendering [31,33,34], and parallel algorithms for simplification [35]. In recent years, hardware-accelerated vector tile rendering has been widely used.…”

Section: Introductionmentioning

confidence: 99%

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An Efficient Visualization Method for Polygonal Data with Dynamic Simplification

Chen

Zhang

et al. 2018

IJGI

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Polygonal data often require rendering with symbolization and simplification in geovisualization. A common issue in existing methods is that simplification, symbolization and rendering are addressed separately, causing computational and data redundancies that reduce efficiency, especially when handling large complex polygonal data. Here, we present an efficient polygonal data visualization method by organizing the simplification, tessellation and rendering operations into a single mesh generalization process. First, based on the sweep line method, we propose a topology embedded trapezoidal mesh data structure to organize the tessellated polygons. Second, we introduce horizontal and vertical generalization operations to simplify the trapezoidal meshes. Finally, we define a heuristic testing algorithm to efficiently preserve the topological consistency. The method is tested using three OpenStreetMap datasets and compared with the Douglas Peucker algorithm and the Binary Line Generalization tree-based method. The results show that the proposed method improves the rendering efficiency by a factor of six. Efficiency-sensitive mapping applications such as emergency mapping could benefit from this method, which would significantly improve their visualization performances.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Efficient Visualization Method for Polygonal Data with Dynamic Simplification

Chen

Zhang

et al. 2018

IJGI

Self Cite

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“…For instance, primitive symbol and symbol layer both offer drawing service, primitive symbol draw itself, symbol layer call the set of primitive symbols to draw themselves. Reference [7] said that functional interface provide customer with its service. "Service" is used here because we think it's appropriate and vivid.…”

Section: B Complex Symbol Generation Using Composite Patternmentioning

confidence: 99%

“…As shown in Figure I, it is intercepted symbols in ArcGIS, some symbols are regular shapes, some are irregular shapes, some are vector symbol, some are character symbols, some are raster image symbols, some are single structure symbols, some are complex structure symbols. Reference [7] also pointed out that the complexity and diversity of symbols and platform compatibility are the huge barriers for symbol library to share in GIS and other systems. Therefore, only a well-designed symbol model can solve the problems described above.…”

Section: A Problem Description and Analysismentioning

confidence: 99%

Application of Design Patterns in Development of Reusable GIS Symbol Library

Li¹,

Jianxun²

2016

Proceedings of the 2016 2nd International Conference on Artificial Intelligence and Industrial Engineering (AIIE 2016)

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Abstract-The design and development of complex 2D symbol library system based on GIS system is completed by combining design pattern technology. Firstly, it states that the design of the symbol library system has its unique difficulties. The diversity and complexity of symbol library lead to difficulties in the design of symbol. Secondly, using the abstraction to implement the classification and generalization of symbol objects. Using and Improving the classic composite pattern to extend the diversity of symbols with the method of combining primitive symbols. Combining factory method and template method pattern to reduce the coupling between modules and improve the extendibility of the system. Finally, the design of the system is very good to achieve the 2D symbol library's function under GIS. It's integrated in the existing GIS system well. It's powerful, reusable and good extendibility.

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Secure map legends based on just noticeable distortion and watermark bit recovery

Zhou

Yuan

Liu

et al. 2023

Multimed Tools Appl

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An improved map-symbol model to facilitate sharing of heterogeneous qualitative map symbols

Cited by 11 publications

References 9 publications

An Efficient Visualization Method for Polygonal Data with Dynamic Simplification

An Efficient Visualization Method for Polygonal Data with Dynamic Simplification

Application of Design Patterns in Development of Reusable GIS Symbol Library

Secure map legends based on just noticeable distortion and watermark bit recovery

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