Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data

Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data

A methodology for the measurement of height in water reservoirs is developed. It is based on Sentinel 2 imagery and aerial LiDAR data. The methodology is automatized using Matlab software and focused on image processing techniques (equalization, binarization, and edge detection) combined with LiDAR...

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Main Authors: Higinio González-Jorge, Luis Miguel González-deSantos, Joaquin Martínez-Sánchez, Ana Sánchez-Rodríguez, Henrique Lorenzo
Format: Article
Language:English
Published: MDPI AG 2018-06-01
Series:Remote Sensing
Subjects:
remote sensing
earth observation
sentinel satellites
climate change
drought
water reservoir
Online Access:http://www.mdpi.com/2072-4292/10/6/902
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spelling doaj-8d5a5adfa19043dab1c519fdd9e6a2c72020-11-24T21:17:59ZengMDPI AGRemote Sensing2072-42922018-06-0110690210.3390/rs10060902rs10060902Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR DataHiginio González-Jorge0Luis Miguel González-deSantos1Joaquin Martínez-Sánchez2Ana Sánchez-Rodríguez3Henrique Lorenzo4Department of Natural Resources and Environmental Engineering, University of Vigo, As Lagoas s/n, 36310 Vigo, SpainDepartment of Natural Resources and Environmental Engineering, University of Vigo, As Lagoas s/n, 36310 Vigo, SpainDepartment of Natural Resources and Environmental Engineering, University of Vigo, As Lagoas s/n, 36310 Vigo, SpainDepartment of Natural Resources and Environmental Engineering, University of Vigo, As Lagoas s/n, 36310 Vigo, SpainDepartment of Natural Resources and Environmental Engineering, University of Vigo, As Lagoas s/n, 36310 Vigo, SpainA methodology for the measurement of height in water reservoirs is developed. It is based on Sentinel 2 imagery and aerial LiDAR data. The methodology is automatized using Matlab software and focused on image processing techniques (equalization, binarization, and edge detection) combined with LiDAR data processing (near neighbour search and height averaging). It is applied in a region of interest selected by the user characterized by a water–land interface. Results are validated in the As Conchas water reservoir (Spain) using an in situ sensing system provided by the Hydrographic Miño-Sil Confederation. The duration of the experiment was one year. The Sentinel 2 bands B2, B3, B4, and B8 were tested during this study. The best results for water height evaluation were obtained for band B8 (842 nm) with an error of 0.20 m and a standard deviation of 0.17 m. The time resolution of the technique depends on the Sentinel 2 revisit time. The time resolution and height accuracy could be improved using complementary satellite systems.http://www.mdpi.com/2072-4292/10/6/902remote sensingearth observationsentinel satellitesclimate changedroughtwater reservoir
collection DOAJ
language English
format Article
sources DOAJ
author Higinio González-Jorge
Luis Miguel González-deSantos
Joaquin Martínez-Sánchez
Ana Sánchez-Rodríguez
Henrique Lorenzo
spellingShingle Higinio González-Jorge
Luis Miguel González-deSantos
Joaquin Martínez-Sánchez
Ana Sánchez-Rodríguez
Henrique Lorenzo
Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data
Remote Sensing
remote sensing
earth observation
sentinel satellites
climate change
drought
water reservoir
author_facet Higinio González-Jorge
Luis Miguel González-deSantos
Joaquin Martínez-Sánchez
Ana Sánchez-Rodríguez
Henrique Lorenzo
author_sort Higinio González-Jorge
title Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data
title_short Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data
title_full Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data
title_fullStr Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data
title_full_unstemmed Automatic Measurement of Water Height in the As Conchas (Spain) Reservoir Using Sentinel 2 and Aerial LiDAR Data
title_sort automatic measurement of water height in the as conchas (spain) reservoir using sentinel 2 and aerial lidar data
publisher MDPI AG
series Remote Sensing
issn 2072-4292
publishDate 2018-06-01
description A methodology for the measurement of height in water reservoirs is developed. It is based on Sentinel 2 imagery and aerial LiDAR data. The methodology is automatized using Matlab software and focused on image processing techniques (equalization, binarization, and edge detection) combined with LiDAR data processing (near neighbour search and height averaging). It is applied in a region of interest selected by the user characterized by a water–land interface. Results are validated in the As Conchas water reservoir (Spain) using an in situ sensing system provided by the Hydrographic Miño-Sil Confederation. The duration of the experiment was one year. The Sentinel 2 bands B2, B3, B4, and B8 were tested during this study. The best results for water height evaluation were obtained for band B8 (842 nm) with an error of 0.20 m and a standard deviation of 0.17 m. The time resolution of the technique depends on the Sentinel 2 revisit time. The time resolution and height accuracy could be improved using complementary satellite systems.
topic remote sensing
earth observation
sentinel satellites
climate change
drought
water reservoir
url http://www.mdpi.com/2072-4292/10/6/902
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AT luismiguelgonzalezdesantos automaticmeasurementofwaterheightintheasconchasspainreservoirusingsentinel2andaeriallidardata
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