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Geovisualization: an optimization algorithm of viewpoint generation for 3D cadastral property units

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Abstract

Large amounts of geographical and property rights information are contained in 3D cadastral property units, although the amount of cadastral information expressed from various perspectives varies. Therefore, it is crucial to choose a perspective that is compatible with human visual perception and conveys the most data as the perspective changes. This paper proposes an optimization method for generating the optimal view of 3D cadastral property units to address the above issues. The construction of candidate perspectives is the first step, followed by the calculation of feature values, including visibility of 3D boundary points under each candidate perspective, visible area ratio, and visual comfort. Then, an improved particle swarm optimization technique is used to determine the optimal view of 3D cadastral property units and the ideal viewpoint for the expected input model. The research results show that the selected optimal viewpoint fully considers human visual comfort, can accommodate a large amount of cadastral information, and can be used as a map** drawing in social applications of 3D cadastral systems. This viewpoint can effectively supplement front views, side views, and axis side views, enabling more visual information to be transmitted in 3D religion maps and 3D property right maps and improving readability.

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The data and code supporting the findings are available in ‘figshare.com’ with the public link https://doi.org/10.6084/m9.figshare.19513693.v1.

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Acknowledgements

The authors would like to thank the anonymous referees and editor for their valuable comments, which significantly improved this article.

Funding

This research was supported by China National Funds supported this research for NSFC, grant number 42201504, 42230406, Fundamental science (Natural Science) research Project of higher education institutions in Jiangsu Province (22KJB420004).

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Correspondence to **nxin Zhou.

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Wang, L., Zhou, X., Shen, J. et al. Geovisualization: an optimization algorithm of viewpoint generation for 3D cadastral property units. J Geogr Syst 26, 91–116 (2024). https://doi.org/10.1007/s10109-023-00429-6

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  • DOI: https://doi.org/10.1007/s10109-023-00429-6

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