3D Negatives & Public spaces

Tall buildings has a major impact not only on the landscape but also on the quality and functioning of public space in a city. The above was a subject of a separate research under the project. To a large extent, the urban structure is the effect of a game involving ‘the positive and the negative’, in other words buildings and space. The game also involves inhabitants of a city. The Positive takes the form of buildings, structures, facilities or elements of the natural landscape. The Negative is the world of invisible geometry determined by the structure of the Positive. The form and geometry of buildings can be seen directly, whereas the geometry of space between buildings is not measurable directly.

This led to the development of the 3D-Negavite method which enables (based on CityGML model) generating a 3d public space model, or the negative of a city, and then analysing its geometrical parameters: the spectrum analysis (CSP), angle typology analysis (TBS), dimension typology analysis and study of public space planes and surfaces (TBL, TBA).

Research on public space also focused on the intensity of the shadow effect produced and obstructing the view by tall buildings. The study applied specialist software providing for calculation of sun exposure time and Sky View Factor (SVF), a tool that enables calculation of surface area obstructed.

3D-Negative method

Software applied in research:
made by Cyber Urban Center, WPUT Szczecin

Shadowing analysis

Software applied in research:
SunHours v.2.0.7 by Solid Green Consulting – free plugin for Sketchup

SVF (Sky View Factor)

Software applied in research:
LSS Chronolux (Links’ System Software) – free plugin for Sketchup

PUBLICATIONS

Zwolinski, A. and Jarzemski, M.: Computing and monitoring potential of public spaces by shading analysis using 3d lidar data and advanced image analysis, Int. Photogramm. Remote Sens. Spatial Inf. Sci., XL-7/W3, 743-750, doi:10.5194/isprsarchives-XL-7-W3-743-2015, 2015.

Zwolinski, A. and Rubinowicz, P.: Parametric analysis of relation between tall buildings and adjacent public spaces in aspect of urban parameters and perception, 2TaLL Working Papier – No2, 2015

Zwolinski, A.: 3d-Negatives of Public Spaces: Detection, Analysis & Tall Buildings Relations, Poster from 10th International Space Syntax Symposium, London 2015

Zwolinski, A.: Complexity of Public Spaces System Between Key Tall Buildings (…), Poster from 16th International Conference on Geometry and Graphics, Innsbruck 2014

Zwoliński A.: Complexity of Public Spaces System Between Key Tall Buildings in City of Szczecin. Geometrical Aspect of Public Spaces in 3D City Model. In Hans-Peter Schröcker and Manfred Husty, editors, Proceedings of the 16th ICGG, pages 175–186. Innsbruck University Press, 2014. ISBN 978-3-902936-46-2.

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3D Negatives & Public spaces

PUBLICATIONS