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id caadria2022_177
authors Pan, Yongjie and Zhang, Tong
year 2022
title Outdoor Thermal Environment Assessment of Existing Residential Areas Supported by UAV Thermal Infrared and 3D Reconstruction Technology
source Jeroen van Ameijde, Nicole Gardner, Kyung Hoon Hyun, Dan Luo, Urvi Sheth (eds.), POST-CARBON - Proceedings of the 27th CAADRIA Conference, Sydney, 9-15 April 2022, pp. 729-738
doi https://doi.org/10.52842/conf.caadria.2022.2.729
summary The underlying surface temperature is an effective evaluation index to study the urban micro-scale thermal environment. For surface temperature acquisition, the thermal infrared camera mounted on a unmanned aerial vehicle (UAV) can reduce field work intensity, improve data collection efficiency, and ensure high accuracy at low cost. In order to convert the 2D thermal image into a more intuitive 3D thermal model, the UAV-based thermal infrared 3D reconstruction is adopted. The key element of thermal infrared 3D model reconstruction lies in the processing of thermal infrared images with low resolution and different temperature scales. In order to improve the quality of the final thermal 3D model, this paper proposes the reconstruction of the detailed 3D mesh using visible images (higher resolution), and map then mapping thermal textures onto the mesh using thermal images (low resolution). In addition, absolute temperature values are extracted from thermal images with different temperature ranges to ensure consistence between color and temperature values in the reconstructed thermal 3D model. The thermal 3D model generated for an existing residential area in Nanjing successfully displays the temperature distribution of the underlying surface and provides a valuable basis for outdoor thermal environment assessment.
keywords Thermal image, UAV, 3D reconstruction, Residential outdoor space, Underlying surface temperature, SDG 3, SDG 11
series CAADRIA
email
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100%; open Han, Y., Pan, Y., Zhao, T., Wang, C. & Sun, C. (2019) Find in CUMINCAD Use of UAV Photogrammetry to Estimate the Solar Energy Potential of Residential Buildings in Severe Cold Region , 24th International Conference on Computer-Aided Architectural Design Research Asia: Intelligent and Informed, CAADRIA 2019 (pp. 613-622). The Association for Computer-Aided Architectural Design Research Asia (CAADRIA)

100%; open Huang, M. , Li, J. & He, X. A. . (2019) Find in CUMINCAD The influence of underlying surface on land surface temperature -- a case study of urban green space in harbin , Energy Procedia, 157, 746-751

100%; open Liu, H., Huang, B., Gao, S., Wang, J., Yang, C. & Li, R. (2021) Find in CUMINCAD Impacts of the evolving urban development on intra-urban surface thermal environment: Evidence from 323 Chinese cities , Science of The Total Environment, 771, 144810

100%; open Rakha, T. & Gorodetsky, A. (2018) Find in CUMINCAD Review of Unmanned Aerial System (UAS) applications in the built environment: Towards automated building inspection procedures using drones , Automation in Construction, 93, 252-264

100%; open Tian, H., Li, F., Zhao, M., Song, G. & Dong, J. (2019) Find in CUMINCAD Analysis of Meticulous Features of Urban Surface Temperature based on UAV Thermal Thermography , Remote Sensing Technology and Application, 34(3), 553-563

100%; open Wu, Z., Wang, Y., Kong, F., Sun, R., Chen, L. & Zhan, W. (2016) Find in CUMINCAD Analysis of the thermal characteristics of selected urban surfaces in a typical residential area based on infrared thermography , Acta Ecologica Sinica, 36, 5421-5431

100%; open Zhao, X., Luo, Y. & He, J. (2020) Find in CUMINCAD Analysis of the thermal environment in pedestrian space using 3D thermal imaging , Energies, 13(14), 3674

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