Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles
Geospatial data obtained using Unmanned Aerial Vehicles (UAVs) and Unmanned Surface Vehicles (USVs) are increasingly used to model the terrain in the coastal zone, in particular in shallow waterbodies (with a depth of up to 1 m). In order to generate a terrain relief, it is important to choose a met...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2023-10-01
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| Series: | Metrology and Measurement Systems |
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| Online Access: | https://journals.pan.pl/Content/129008/PDF/art05_int_LR.pdf |
| _version_ | 1797648160489734144 |
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| author | Oktawia Lewicka |
| author_facet | Oktawia Lewicka |
| author_sort | Oktawia Lewicka |
| collection | DOAJ |
| description | Geospatial data obtained using Unmanned Aerial Vehicles (UAVs) and Unmanned Surface Vehicles (USVs) are increasingly used to model the terrain in the coastal zone, in particular in shallow waterbodies (with a depth of up to 1 m). In order to generate a terrain relief, it is important to choose a method for modelling that will allow it to be accurately projected. Therefore, the aim of this article is to present a method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles. Bathymetric and photogrammetric measurements were carried out on the waterbody adjacent to the public beach in Gdynia (Poland) in 2022 using a DJI Phantom 4 RTK UAV and an AutoDron USV. The geospatial data integration process was performed in the Surfer software. As a result, Digital Terrain Models (DTMs) in the coastal zone were developed using the following terrain modelling methods: Inverse Distance to a Power (IDP), Inverse Distance Weighted (IDW), kriging, the Modified Shepard’s Method (MSM) and Natural Neighbour Interpolation (NNI). The conducted study does not clearly indicate any of the methods, as the selection of the method is also affected by the visualization of the generated model. However, having compared the accuracy measures of the charts and models obtained, it was concluded that for this type of data, the kriging (linear model) method was the best. Very good results were also obtained for the NNI method. The lowest value of the Root Mean Square Error (RMSE) (0.030 m) and the lowest value of the Mean Absolute Error (MAE) (0.011 m) were noted for the GRID model interpolated with the kriging (linear model) method. Moreover, the NNI and kriging (linear model) methods obtained the highest coefficient of determination value (0.999). The NNI method has the lowest value of the R68 measure (0.009 m), while the lowest value of the R95 measure (0.033 m) was noted for the kriging (linear model) method. |
| first_indexed | 2024-03-11T15:27:08Z |
| format | Article |
| id | doaj.art-6107809b9a40453aa77f56a007c8fec9 |
| institution | Directory Open Access Journal |
| issn | 2300-1941 |
| language | English |
| last_indexed | 2024-03-11T15:27:08Z |
| publishDate | 2023-10-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Metrology and Measurement Systems |
| spelling | doaj.art-6107809b9a40453aa77f56a007c8fec92023-10-27T10:33:56ZengPolish Academy of SciencesMetrology and Measurement Systems2300-19412023-10-01vol. 30No 3461480https://doi.org/10.24425/mms.2023.146421Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehiclesOktawia Lewicka0Department of Geodesy and Oceanography, Gdynia Maritime University, ul. Morska 81-87, 81-225 Gdynia, PolandGeospatial data obtained using Unmanned Aerial Vehicles (UAVs) and Unmanned Surface Vehicles (USVs) are increasingly used to model the terrain in the coastal zone, in particular in shallow waterbodies (with a depth of up to 1 m). In order to generate a terrain relief, it is important to choose a method for modelling that will allow it to be accurately projected. Therefore, the aim of this article is to present a method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles. Bathymetric and photogrammetric measurements were carried out on the waterbody adjacent to the public beach in Gdynia (Poland) in 2022 using a DJI Phantom 4 RTK UAV and an AutoDron USV. The geospatial data integration process was performed in the Surfer software. As a result, Digital Terrain Models (DTMs) in the coastal zone were developed using the following terrain modelling methods: Inverse Distance to a Power (IDP), Inverse Distance Weighted (IDW), kriging, the Modified Shepard’s Method (MSM) and Natural Neighbour Interpolation (NNI). The conducted study does not clearly indicate any of the methods, as the selection of the method is also affected by the visualization of the generated model. However, having compared the accuracy measures of the charts and models obtained, it was concluded that for this type of data, the kriging (linear model) method was the best. Very good results were also obtained for the NNI method. The lowest value of the Root Mean Square Error (RMSE) (0.030 m) and the lowest value of the Mean Absolute Error (MAE) (0.011 m) were noted for the GRID model interpolated with the kriging (linear model) method. Moreover, the NNI and kriging (linear model) methods obtained the highest coefficient of determination value (0.999). The NNI method has the lowest value of the R68 measure (0.009 m), while the lowest value of the R95 measure (0.033 m) was noted for the kriging (linear model) method.https://journals.pan.pl/Content/129008/PDF/art05_int_LR.pdfterrain modellingcoastal zonegeospatial dataunmanned aerial vehicle (uav)unmannedsurface vehicle (usv) |
| spellingShingle | Oktawia Lewicka Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles Metrology and Measurement Systems terrain modelling coastal zone geospatial data unmanned aerial vehicle (uav) unmannedsurface vehicle (usv) |
| title | Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles |
| title_full | Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles |
| title_fullStr | Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles |
| title_full_unstemmed | Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles |
| title_short | Method for accuracy assessment of topo-bathymetric surface models based on geospatial data recorded by UAV and USV vehicles |
| title_sort | method for accuracy assessment of topo bathymetric surface models based on geospatial data recorded by uav and usv vehicles |
| topic | terrain modelling coastal zone geospatial data unmanned aerial vehicle (uav) unmannedsurface vehicle (usv) |
| url | https://journals.pan.pl/Content/129008/PDF/art05_int_LR.pdf |
| work_keys_str_mv | AT oktawialewicka methodforaccuracyassessmentoftopobathymetricsurfacemodelsbasedongeospatialdatarecordedbyuavandusvvehicles |