Spectral and spatial assessment of the Ikonos images fusion, using the Principal Components, Brovey Transform and Multiplicative

Medina, Javier; González, Laura; Upegui, Erika

doi:10.23919/cisti.2019.8760873

Cited by 2 publications

(1 citation statement)

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“…Improving the radiometric resolution of the OLI meter to 16 bits has made it possible to conduct some studies, especially in the field of preparing a distribution map of various types of vegetation [17]. The characteristics of water from satellite images are analyzed using different indices such as Normalized Vegetation Index (NDVI), Normalized Water Cover Index (NDWI), and modified normalized water cover index [18][19][20]. In past research, the MNDWI index has obtained more favorable results for water extraction from Landsat, Spot, Aster, and MODIS satellite images [7,21].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Quality of Satellite Images for Estimating the Water Body

Roohi

2024

JSM Environ Sci Ecol

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Water resources are indeed limited, and factors such as drought, climate change, and human activities can contribute to their decrease. To estimate the amount of water stored in a dam lake, several methods can be employed. Remote sensing techniques, such as satellite imagery can be used to estimate the water surface area of the reservoir. In this study, the amount of water cover changes is investigated using a remote sensing technique. Also, to increase the level of accuracy in estimating the water cover of the dam lake, the technique of Image Fusion Landsat-8 satellites images and increasing the level of spatial accuracy from 30 meters to 15 meters has been used. In this study, it has been shown that by combining Landsat satellite images, the accuracy in calculating and estimating the water cover area has increased. Also, in this study, the depth changes between 2017-2020 have been investigated. In the research conducted, the amount of water stored in the dam lake has decreased due to the droughts of the last few years, due to the increase in water consumption in the urban and agricultural areas, especially during the drought period.

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