Nürnberg - 1. Viewshed Greenness Visibility Index (VGVI)
By combining binary greenspace data with DSM/DTM viewshed analysis, the Visibility-based Greenspace Index (VGVI) captures how much vegetation is actually seen from a ground-level perspective—offering a more user-centered and comprehensive measure of urban greenery.
Jan 13, 2025
Modelling eye-level visibility of urban green space: Optimising city-wide point-based viewshed computations through prototyping
Studies from public and environmental health show strong indication of the importance of visible urban green space. However, current approaches for modelling viewshed based greenness visibility still have high computation costs. Therefore, we propose an algorithm for point-based viewshed computation using a novel prototyping approach. Our evaluation shows an average improvement of 34%. We anticipate that these findings lay the groundwork for further optimisation of point-based viewshed computation, improving the feasibility of subsequent comparative studies in the field of public and environmental health.
Jun 10, 2022
GVI: Greenness Visibility Index R package
The GVI R package provides tools for computing a Greenness Visibility Index (GVI) surface from a DSM, DTM and Greenness Surface.
Jul 5, 2021
Visibility - Sensitivity Analysis
Thinking critically about parameters before running the code is always important. In this post I will explain how to set important parameters when conducting a Visibility Analysis.
Jun 22, 2021
Visible Greenness Exposure
Exposure to residential greenness or green spaces such as parks or gardens are beneficial for multiple measures of health. One type of greenspace exposure is visibility, referring to the visual perception of greenness. In this post I will demonstrate, how to conduct a viewshed based visibility analysis.
Mar 15, 2021