Journal
APPLIED SCIENCES-BASEL
Volume 11, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/app11104543
Keywords
hyperspectral imagining; principle component analysis; multivariate regression analysis; suspended particles; near-infrared band; far-infrared band
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Funding
- Ministry of Science and Technology, The Republic of China [MOST 108-2823-8-194-002, 109-2622-8-194-001-TE1, 109-2622-8-194-007]
- Advanced Institute of Manufacturing with High-tech Innovations (AIM-HI)
- Center for Innovative Research on Aging Society (CIRAS) from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE)
- Ditmanson Medical Foundation Chia-Yi Christian Hospital
- National Chung Cheng University Joint Research Program in Taiwan [CYCH-CCU-2021-02]
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This study presents a method for detecting air pollution using a hyperspectral imaging algorithm, which involves principal component analysis and multivariate regression analysis to calculate the concentrations of PM2.5 and PM10. It is found that the visible light band has advantages in data acquisition and accuracy compared to the near-infrared and far-infrared bands.
This paper proposes a method to detect air pollution by applying a hyperspectral imaging algorithm for visible light, near infrared, and far infrared. By assigning hyperspectral information to images from monocular, near infrared, and thermal imaging, principal component analysis is performed on hyperspectral images taken at different times to obtain the solar radiation intensity. The Beer-Lambert law and multivariate regression analysis are used to calculate the PM2.5 and PM10 concentrations during the period, which are compared with the corresponding PM2.5 and PM10 concentrations from the Taiwan Environmental Protection Agency to evaluate the accuracy of this method. This study reveals that the accuracy in the visible light band is higher than the near-infrared and far-infrared bands, and it is also the most convenient band for data acquisition. Therefore, in the future, mobile phone cameras will be able to analyze the PM2.5 and PM10 concentrations at any given time using this algorithm by capturing images to increase the convenience and immediacy of detection.
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