Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt

Increasing artificial light at night (ALAN) impacts urban sustainability and contributes to light pollution. Nighttime satellites miss side ALAN, so drone-captured tilted images and measured illuminance are used to assess ALAN pollution within urban streets. By integrating deep learning methods, ALA...

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Main Authors: Jiejie Wu, Liang Zhou, Deping Li, Daoquan Zhang, Tingting Jiang, Chengzhi Zong
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Geocarto International
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/10106049.2025.2453631
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author Jiejie Wu
Liang Zhou
Deping Li
Daoquan Zhang
Tingting Jiang
Chengzhi Zong
author_facet Jiejie Wu
Liang Zhou
Deping Li
Daoquan Zhang
Tingting Jiang
Chengzhi Zong
author_sort Jiejie Wu
collection DOAJ
description Increasing artificial light at night (ALAN) impacts urban sustainability and contributes to light pollution. Nighttime satellites miss side ALAN, so drone-captured tilted images and measured illuminance are used to assess ALAN pollution within urban streets. By integrating deep learning methods, ALAN information is efficiently extracted and statistically analyzed. Key findings include: (1) With the drone camera set to f2.8, the best correlation between image RGB color channel brightness and measured illuminance occurs at ISO 200 and 1/4s, achieving R2 reaches 0.83 and MAE reaches 7.89 lx. (2) Mask R-CNN and Deeplabv3 achieve over 0.91 in extraction accuracy, with Mask R-CNN excelling in window, street, and neon lights, while Deeplabv3 better handles building sides and road surfaces. (3) Vertical light pollution from typical residential buildings shows a gradual attenuation trend with increasing height. This research presents a novel technical approach for monitoring urban ALAN pollution through UAV-captured tilted images.
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institution Kabale University
issn 1010-6049
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publishDate 2025-12-01
publisher Taylor & Francis Group
record_format Article
series Geocarto International
spelling doaj-art-7c2dd5ac625e484d8e9810faacaa5ef62025-01-22T07:28:33ZengTaylor & Francis GroupGeocarto International1010-60491752-07622025-12-0140110.1080/10106049.2025.2453631Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tiltJiejie Wu0Liang Zhou1Deping Li2Daoquan Zhang3Tingting Jiang4Chengzhi Zong5Hunan Key Laboratory of Geospatial Big Data Mining and Application Affiliation, Hunan Normal University, Changsha, ChinaHunan Key Laboratory of Geospatial Big Data Mining and Application Affiliation, Hunan Normal University, Changsha, ChinaHunan Key Laboratory of Geospatial Big Data Mining and Application Affiliation, Hunan Normal University, Changsha, ChinaHunan Key Laboratory of Geospatial Big Data Mining and Application Affiliation, Hunan Normal University, Changsha, ChinaHunan Key Laboratory of Geospatial Big Data Mining and Application Affiliation, Hunan Normal University, Changsha, ChinaHunan Key Laboratory of Geospatial Big Data Mining and Application Affiliation, Hunan Normal University, Changsha, ChinaIncreasing artificial light at night (ALAN) impacts urban sustainability and contributes to light pollution. Nighttime satellites miss side ALAN, so drone-captured tilted images and measured illuminance are used to assess ALAN pollution within urban streets. By integrating deep learning methods, ALAN information is efficiently extracted and statistically analyzed. Key findings include: (1) With the drone camera set to f2.8, the best correlation between image RGB color channel brightness and measured illuminance occurs at ISO 200 and 1/4s, achieving R2 reaches 0.83 and MAE reaches 7.89 lx. (2) Mask R-CNN and Deeplabv3 achieve over 0.91 in extraction accuracy, with Mask R-CNN excelling in window, street, and neon lights, while Deeplabv3 better handles building sides and road surfaces. (3) Vertical light pollution from typical residential buildings shows a gradual attenuation trend with increasing height. This research presents a novel technical approach for monitoring urban ALAN pollution through UAV-captured tilted images.https://www.tandfonline.com/doi/10.1080/10106049.2025.2453631UAV tilted imagesartificial light at nightlight pollutionilluminancedeep learning
spellingShingle Jiejie Wu
Liang Zhou
Deping Li
Daoquan Zhang
Tingting Jiang
Chengzhi Zong
Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt
Geocarto International
UAV tilted images
artificial light at night
light pollution
illuminance
deep learning
title Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt
title_full Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt
title_fullStr Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt
title_full_unstemmed Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt
title_short Assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt
title_sort assessing nighttime artificial light pollution from the perspective of an unmanned aerial vehicle tilt
topic UAV tilted images
artificial light at night
light pollution
illuminance
deep learning
url https://www.tandfonline.com/doi/10.1080/10106049.2025.2453631
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AT depingli assessingnighttimeartificiallightpollutionfromtheperspectiveofanunmannedaerialvehicletilt
AT daoquanzhang assessingnighttimeartificiallightpollutionfromtheperspectiveofanunmannedaerialvehicletilt
AT tingtingjiang assessingnighttimeartificiallightpollutionfromtheperspectiveofanunmannedaerialvehicletilt
AT chengzhizong assessingnighttimeartificiallightpollutionfromtheperspectiveofanunmannedaerialvehicletilt