Weitere Kapitel dieses Buchs durch Wischen aufrufen
The availability of detailed and precise digital surface models based on LiDaR data allows accurate calculation of visibility analysis even in urban areas. Lately, the viewshed analysis, which is implemented in geographical information systems, is often used to determine the visibility of buildings or other structures in both natural and urban environments. Such utilization of viewshed tool, which is originally designed to assess visibility from point to its neighbourhood, however, brings issues regarding partial visibility of the target that are usually neglected. The core of the problem here is that the target building is often represented as a single point in the viewshed analysis. This simplification can lead to an incorrect assessment of the visibility as the specific point of the building can be invisible for the observer while other parts of the building are visible. To properly analyse visibility of a building it is necessary to consider partial visibility of the target. To allow the assessment of partial visibility more than one point that represents the building needs to be defined. In this contribution, the theoretical aspects of reverse viewshed, an area from which a target point is visible, are considered with a focus on the proper representation of target building in the reverse visibility analysis. A practical study of building visibility is conducted with the building represented as single and multiple points. The results are compared and the differences are explored.
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
Aichholzer, O., Aurenhammer, F., Alberts, D., & Gärtner, B. (1995). A novel type of skeleton for polygons. Journal of Universal Computer Science, 1(12), 752–761.
Bartie, P., Reitsma, F., Kingham, S., & Mills, S. (2011). Incorporating vegetation into visual exposure modelling in urban environments. International Journal of Geographical Information Science, 25(5), 851–868. CrossRef
Caha, J., & Rášová, A. (2015). Line-of-sight derived indices: Viewing angle difference to a local horizon and the difference of viewing angle and the slope of line of sight. In K. Růžičková & T. Inspektor (Eds.), Surface models for geosciences SE—6 (pp. 61–72). Ostrava: Springer International Publishing. CrossRef
Felleman, J. P. (1979). Landscape visibility mapping: Theory and practice. New York: Syracuse.
Fisher, P. F. (1993). Algorithm and implementation uncertainty in viewshed analysis. International Journal of Geographical Information Systems, 7(4), 331–347. CrossRef
Fisher, P. F. (1996). Extending the applicability of viewsheds in landscape planning. Photogrammetric Engineering and Remote Sensing, 62(11), 1297–1302.
Garnero, G., & Fabrizio, E. (2015). Visibility analysis in urban spaces: A raster-based approach and case studies. Environment and Planning B: Planning and Design, 42, 688–707. CrossRef
Hlavatá, Z., & Oťaheľ, J. (2010). Vizuálna analýza vybraných historických dominánt Bratislavy. Geografický Časopis, 62(4), 293–311.
Klouček, T., Lagner, O., & Šímová, P. (2015). How does data accuracy influence the reliability of digital viewshed models? A case study with wind turbines. Applied Geography, 64, 46–54. CrossRef
Maloy, M. A., & Dean, D. J. (2001). An accuracy assessment of various GIS-based viewshed delineation techniques. Photogrammetric Engineering & Remote Sensing, 67(11), 1293–1298.
Ogburn, D. E. (2006). Assessing the level of visibility of cultural objects in past landscapes. Journal of Archaeological Science, 33(3), 405–413. CrossRef
Rød, J. K., & van der Meer, D. (2009). Visibility and dominance analysis: Assessing a high-rise building project in Trondheim. Environment and Planning B: Planning and Design, 36(4), 698–710. CrossRef
Yu, S., Yu, B., Song, W., Wu, B., Zhou, J., & Huang, Y. (2016). Landscape and urban planning view-based greenery: A three-dimensional assessment of city buildings’ green visibility using floor green view index. Landscape and Urban Planning, 152, 13–26. CrossRef
- Representing Buildings for Visibility Analyses in Urban Spaces
Neuer Inhalt/© ITandMEDIA, Best Practices für die Mitarbeiter-Partizipation in der Produktentwicklung/© astrosystem | stock.adobe.com