Modeling the Effect of Greenways’ Multilevel Visual Characteristics on Thermal Perception in Summer Based on Bayesian Network and Computer Vision

Yongrong Zheng, Siren Lan, Jiayi Zhao, Yuhan Liu, Songjun He and Chang Liu ()
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Yongrong Zheng: College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Siren Lan: College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Jiayi Zhao: College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Yuhan Liu: College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Songjun He: College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Chang Liu: College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Land, 2024, vol. 13, issue 11, 1-27

Abstract: The aim of this study is to reveal the effects of multilevel visual characteristics of greenways on thermal perception in hot and humid regions during summer and to explore the potential of visual design to enhance psychological thermal comfort. Data on light (L), color (C), plant richness (PR), space openness (SO), scenic view (SV), thermal sensation (TS), and thermal preference (TP) were collected through questionnaires ( n = 546). Computer vision technology was applied to measure the green view index (GVI), sky view index (SVI), paving index (PI), spatial enclosure (SE), and water index (WI). Using the hill climbing algorithm in R to construct a Bayesian network, model validation results indicated prediction accuracies of 0.799 for TS and 0.838 for TP. The results showed that: (1) SE, WI, and SV significantly positively influence TS, while L significantly negatively influences TS (R 2 = 0.6805, p -value < 0.05); (2) WI, TS, and SV significantly positively influence TP (R 2 = 0.759, p -value < 0.05).

Keywords: hot and humid areas; greenways; multilevel visual characteristics; thermal perception; bayesian network; computer vision; semantic image segmentation (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2024
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