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DEMIX GIS Database Version 2

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This database supports the work of the Digital Elevation Model Intercomparison eXperiment (DEMIX) working group (Strobl and others, 2021; Guth and others, 2021; Bielski and others, 2023, 2024). The two files have the database in CSV format, and a metadata file describing the contents of each field in the database. To understand the use of the database, see the prepint (Bielski and others, 2023). Changes to version 2 which is the only version you should use: 1. Added 2 new areas, Stateline and Canary Islands East which should have minimal differences between the DSM and the DTM and no significant changes over the last 20 years. 2. Added the country to the database 3. Added a number of areas in France 4. Added some additional tiles for a few areas 5. Total number of tiles almost doubled 6. Now using GDAL to compute the datum shift, horizontal and vertical, for USGS 3DEP 7. Fixed some anomalies computing pixel-is-area DEMs 8. Recomputed all the reference data and the version 1.0 GIS database (Guth, 2022) 9. New file naming conventions References: Bielski, C.; López-Vázquez, C.; Guth. P.L.; Grohmann, C.H. and the TMSG DEMIX Working Group, 2023. DEMIX Wine Contest Method Ranks ALOS AW3D30, COPDEM, and FABDEM as Top 1” Global DEMs: https://arxiv.org/pdf/2302.08425.pdf Bielski, C.; López-Vázquez, C.; Grohmann, C.H.; Guth. P.L.; Hawker, L.; Gesch, D.; Trevisani, S.; Herrera-Cruz, V.; Riazanoff, S.; Corseaux, A.; Reuter, H.; Strobl, P., 2024. Novel approach for ranking DEMs: Copernicus DEM improves one arc second open global topography. IEEE Transactions on Geoscience & Remote Sensing. vol. 62, pp. 1-22, 2024, Art no. 4503922, https://doi.org/10.1109/TGRS.2024.3368015 Guth, P.L.; Van Niekerk, A.; Grohmann, C.H.; Muller, J.-P.; Hawker, L.; Florinsky, I.V.; Gesch, D.; Reuter, H.I.; Herrera-Cruz, V.; Riazanoff, S.; López-Vázquez, C.; Carabajal, C.C.; Albinet, C.; Strobl, P. Digital Elevation Models: Terminology and Definitions. Remote Sens. 2021, 13, 3581. https://doi.org/10.3390/rs13183581 Strobl, P.A.; Bielski, C.; Guth, P.L.; Grohmann, C.H.; Muller, J.P.; López-Vázquez, C.; Gesch, D.B.; Amatulli, G.; Riazanoff, S.; Carabajal, C. The Digital Elevation Model Intercomparison eXperiment DEMIX, a community based approach at global DEM benchmarking. Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci. 2021, XLIII-B4-2021, 395–400. https://doi.org/10.5194/isprs-archives-XLIII-B4-2021-395-2021

本数据库服务于数字高程模型比对试验(Digital Elevation Model Intercomparison eXperiment,DEMIX)工作组的相关研究工作(Strobl等,2021;Guth等,2021;Bielski等,2023、2024)。该数据库包含两类文件:其一为CSV格式的数据库本体文件,其二为描述数据库各字段内容的元数据文件。 若需了解该数据库的使用方法,请参阅预印本文献(Bielski等,2023)。 仅可使用版本2,其更新内容如下: 1. 新增2个研究区域:州界区域(Stateline)与东加那利群岛(Canary Islands East),上述区域的数字表面模型(Digital Surface Model,DSM)与数字地形模型(Digital Terrain Model,DTM)差异极小,且近20年间无显著变化。 2. 为数据库新增国家字段。 3. 新增法国境内的多个研究区域。 4. 为部分区域补充了若干影像瓦片。 5. 影像瓦片总数几乎翻倍。 6. 针对美国地质调查局(United States Geological Survey,USGS)3DEP数据,采用GDAL计算其水平与垂直基准面偏移量。 7. 修复了像素区域型数字高程模型计算中的部分异常问题。 8. 重新计算了所有参考数据与1.0版GIS数据库(Guth,2022)。 9. 采用全新的文件命名规范。 参考文献: 1. Bielski C、López-Vázquez C、Guth P.L.、Grohmann C.H. 及TMSG DEMIX工作组,2023。DEMIX竞赛排名法将ALOS AW3D30、COPDEM与FABDEM列为全球顶级1弧秒数字高程模型:https://arxiv.org/pdf/2302.08425.pdf 2. Bielski C、López-Vázquez C、Grohmann C.H.、Guth P.L.、Hawker L、Gesch D、Trevisani S、Herrera-Cruz V、Riazanoff S、Corseaux A、Reuter H、Strobl P,2024。一种全新的数字高程模型排序方法:哥白尼数字高程模型优化1弧秒开放全球地形数据。《IEEE Geoscience & Remote Sensing汇刊》,第62卷,第1-22页,2024,文章编号4503922:https://doi.org/10.1109/TGRS.2024.3368015 3. Guth P.L.、Van Niekerk A、Grohmann C.H.、Muller J.-P.、Hawker L、Florinsky I.V.、Gesch D、Reuter H.I.、Herrera-Cruz V、Riazanoff S、López-Vázquez C、Carabajal C.C.、Albinet C、Strobl P.《数字高程模型:术语与定义》,《遥感》(Remote Sens.),2021年,第13卷,第3581页:https://doi.org/10.3390/rs13183581 4. Strobl P.A.、Bielski C、Guth P.L.、Grohmann C.H.、Muller J.P.、López-Vázquez C、Gesch D.B.、Amatulli G、Riazanoff S、Carabajal C.《数字高程模型比对试验DEMIX:一种面向全球数字高程模型基准评测的社区化方法》,《国际摄影测量、遥感与空间信息科学档案》(Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci.),2021年,第XLIII-B4-2021卷,第395-400页:https://doi.org/10.5194/isprs-archives-XLIII-B4-2021-395-2021

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2024-07-11
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