2023 Volume 79 Issue 22 Article ID: 22-22016
In recent years, the number of heat stroke patients and deaths has increased due to rising temperatures caused by global warming and the heat island effect. Heat indices established to determine the likelihood of heat stroke are used to publicize the risk of heat stroke, and the Ministry of the Environment publishes heat indices for each city on the Web. However, there is no way for the general public to know the local heat index in outdoor environments such as daily life and workplaces because specific measurements are required to measure the radiant heat necessary for the heat index. Knowing the risk difference between sunny and shade distribution at any given time will facilitate planning actions and tasks. This paper quantitatively demonstrates the real-time visualization of heat risk for public parks and work site landscapes. In this study, we calculated the sunlight conditions based on 3D data from the site in order further to estimate the heat index on a pixel-by-pixel basis using a global illumination shading representation. By implementing this method in a game engine, it was possible to develop a system that visualizes the heat index distribution in real time for ever-changing heat environments.
