Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application
From an extensive search of papers related to the comparison of Global Digital Elevation Models (hereinafter GDEMs), an analysis is carried out that aims to answer several questions such as: Which GDEMs have been compared? Where have the comparisons been made? How many comparisons have been made? Ho...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/12/8/337 |
| _version_ | 1797584513866399744 |
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| author | Carlos López-Vázquez Francisco Javier Ariza-López |
| author_facet | Carlos López-Vázquez Francisco Javier Ariza-López |
| author_sort | Carlos López-Vázquez |
| collection | DOAJ |
| description | From an extensive search of papers related to the comparison of Global Digital Elevation Models (hereinafter GDEMs), an analysis is carried out that aims to answer several questions such as: Which GDEMs have been compared? Where have the comparisons been made? How many comparisons have been made? How have the assessments been carried out? Which is the GDEM option with the lowest RMSE? Analysis shows that SRTM and ASTER are the most popular GDEMs, that the countries where more comparisons have been made are Brazil, India, and China, and that the main type of reference data for evaluations is the use of points surveyed by GNSS techniques. A variety of criteria have been found for the comparison of GDEMs, but the most used are the RMSE and the standard deviation of the elevation error. There are numerous criteria with a more user-centric character in thematic areas, such as morphometry, geomorphology, erosion, etc. However, in none of the thematic areas does there exist a standard method of comparison. This limits the possibilities of establishing a ranking of GDEMs based on their user-focused quality. In addition, the methods and reference data set are not adequately explained or shared, which limits the interoperability of the studies carried out and the ability to make robust comparisons between them. |
| first_indexed | 2024-03-10T23:53:45Z |
| format | Article |
| id | doaj.art-d1ad318771fd4c4e8e8de90a54c54088 |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-03-10T23:53:45Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-d1ad318771fd4c4e8e8de90a54c540882023-11-19T01:24:06ZengMDPI AGISPRS International Journal of Geo-Information2220-99642023-08-0112833710.3390/ijgi12080337Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their ApplicationCarlos López-Vázquez0Francisco Javier Ariza-López1Laboratorio de Tecnologías de la Información Geográfica (LatinGEO), Facultad de Ingeniería, Universidad ORT, Montevideo 11100, UruguayDepartamento Ingeniería Cartográfica, Geodésica y Fotogrametría, Escuela Politécnica Superior, Universidad de Jaén, 23071 Jaén, SpainFrom an extensive search of papers related to the comparison of Global Digital Elevation Models (hereinafter GDEMs), an analysis is carried out that aims to answer several questions such as: Which GDEMs have been compared? Where have the comparisons been made? How many comparisons have been made? How have the assessments been carried out? Which is the GDEM option with the lowest RMSE? Analysis shows that SRTM and ASTER are the most popular GDEMs, that the countries where more comparisons have been made are Brazil, India, and China, and that the main type of reference data for evaluations is the use of points surveyed by GNSS techniques. A variety of criteria have been found for the comparison of GDEMs, but the most used are the RMSE and the standard deviation of the elevation error. There are numerous criteria with a more user-centric character in thematic areas, such as morphometry, geomorphology, erosion, etc. However, in none of the thematic areas does there exist a standard method of comparison. This limits the possibilities of establishing a ranking of GDEMs based on their user-focused quality. In addition, the methods and reference data set are not adequately explained or shared, which limits the interoperability of the studies carried out and the ability to make robust comparisons between them.https://www.mdpi.com/2220-9964/12/8/337DEMGDEMSRTMASTERNASADEMWorldDEM |
| spellingShingle | Carlos López-Vázquez Francisco Javier Ariza-López Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application ISPRS International Journal of Geo-Information DEM GDEM SRTM ASTER NASADEM WorldDEM |
| title | Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application |
| title_full | Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application |
| title_fullStr | Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application |
| title_full_unstemmed | Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application |
| title_short | Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application |
| title_sort | global digital elevation model comparison criteria an evident need to consider their application |
| topic | DEM GDEM SRTM ASTER NASADEM WorldDEM |
| url | https://www.mdpi.com/2220-9964/12/8/337 |
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