SPECTRAL ANALYSIS OF IMAGES OF PLANTS UNDER STRESS USING A CLOSE-RANGE CAMERA

Plants signal their health in a broader spectrum than we can see with our eyes. We compared sunlight reflectance on plants at spectral wavelengths ranging from 430 nm to 870 nm in our study. These are based on multispectral images captured at a distance of 2 m. Indoor plants were observed over a per...

Full description

Saved in:
Bibliographic Details
Published inInternational archives of the photogrammetry, remote sensing and spatial information sciences. Vol. XLVIII-1/W3-2023; pp. 63 - 69
Main Authors Goebel, M., Iwaszczuk, D.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Gottingen Copernicus GmbH 19.10.2023
Copernicus Publications
Subjects
Archives & records
Cameras
Forest floor
Lasers
Leaves
Light
Photogrammetry
Plants
Plants (botany)
Reflectance
Remote sensing
Spectral analysis
Spectral signatures
Spectrum analysis
Sunlight
Unmanned aerial vehicles
Vegetation
Vegetation index
Wavelengths
Online AccessGet full text

Cover

More Information
Summary:Plants signal their health in a broader spectrum than we can see with our eyes. We compared sunlight reflectance on plants at spectral wavelengths ranging from 430 nm to 870 nm in our study. These are based on multispectral images captured at a distance of 2 m. Indoor plants were observed over a period of 18 days and stressed due to a lack of sunlight or water. Wild sedge photographed on the forest floor at close range and with a difficult capture setup produced results comparable to published multispectral signatures derived from aerial imagery. Changes of leaf reflectance were noticed in spectral signatures and in vegetation indices. When calculating vegetation indices, our results show that comparing red and red edge reflectance values is superior to comparing red and NIR reflectance values.
ISSN:2194-9034
1682-1750
2194-9034
DOI:10.5194/isprs-archives-XLVIII-1-W3-2023-63-2023