Fractal generator for efficient production of random planar patterns and symbols in digital mapping

Chen, Qiyu; Liu, Gang; Ma, Xiaogang; Li, Xinchuan; He, Zhenwen

doi:10.1016/j.cageo.2017.04.009

Cited by 2 publications

(4 citation statements)

References 33 publications

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“…The design of cartographic symbols including special symbols (user symbols) with regard to currently used symbols in EU states and their compatibility with applications for map production (GIS SW) is shown in [3,5,[10][11][12][13][14][15].…”

Section: Related Workmentioning

confidence: 99%

“…The use of random variable configurations and boundaries for the creation of cartographic symbols is a topic in [11]. These generating algorithms are limited by shape elements, cartographic standards, and many other conditions.…”

Section: Related Workmentioning

confidence: 99%

“…Another disadvantage is that the description of symbols using XML is extensive (of considerable size), complex, and confusing. The approach to symbol creation using fractal geometry proposed in another article has similar properties [11]. Other works focus more on cartographic language as a whole than on the creation of individual symbols.…”

mentioning

confidence: 92%

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Method for Cartographic Symbols Creation in Connection with Map Series Digitization

Bartoněk

Andělová

2022

IJGI

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The article addresses the issue of the unification of cartographic symbols in terms of graphics (visual) and interpretation in an international context. The motivation is the ongoing digitization of processes in the conditions of Industry 4.0, especially Construction 4.0, where geodesy and cartography have their irreplaceable share. The aim was both to design uniform cartographic symbols for the description of geographical objects on the map and to design a general method for the description of unified cartographic symbols so that it is independent of specific applications. The authors compared the symbols used in the map works of the Czech Republic and neighboring countries that are members of the EU and proposed a formal description of the graphics properties of the symbols, which is based on a general mathematical model. The description takes the form of a text string, and a Python algorithm was built to render the symbol and implemented in the QGIS environment. The article also presents a comparison of some cartographic symbols used in the Czech Republic and in selected EU countries and a proposal for their unification. The motivation is the effort to unify the cartographic language within the EU. The problem is in accordance with the INSPIRE directive (seamless map of Europe) at the international level and with the Digital Czechia 2018+ strategy at the national level.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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Method for Cartographic Symbols Creation in Connection with Map Series Digitization

Bartoněk

Andělová

2022

IJGI

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“…The description information in the borehole log is mainly the geological terminology of the text format. In order to improve the accuracy of description recognition, the Tesseract-OCR character library is trained by the geological terms in the same batch of borehole logs [27]. The Tesseract-OCR is imported in order to identify the graph.…”

Section: Text Identification Through Training Setsmentioning

confidence: 99%

A Rapid Method for Information Extraction from Borehole Log Images

Zhang

Tian

et al. 2020

Applied Sciences

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Borehole logs are very important for geological analysis and application. Extracting structured information from borehole logs in the image format is the key to any analysis and application based on borehole data. The current method has defects in solving the beard phenomenon of the borehole log and the identification of special geological symbols. This paper proposes an automatic extraction method for borehole log information by combining the structural analysis based on the corner mark, as well as the structural understanding based on deep learning. The principles and key technologies of the method are described in detail. The performance of the method was tested by specific examples. This method is implemented on a geological information platform called QuantyView. The information extraction of 100 borehole logs with the same specification is used to verify the effectiveness of the proposed method. The results show that the method can not only effectively solve the inconsistency between the thickness and the description information in the borehole log but it can also address the low recognition efficiency of professional vocabulary, which can improve the extraction efficiency and accuracy of the borehole log information.

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Fractal generator for efficient production of random planar patterns and symbols in digital mapping

Cited by 2 publications

References 33 publications

Method for Cartographic Symbols Creation in Connection with Map Series Digitization

Method for Cartographic Symbols Creation in Connection with Map Series Digitization

A Rapid Method for Information Extraction from Borehole Log Images

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