INTEGRAÇÃO DO BANCO DE DADOS DO SIGEF E DA FUNDAÇÃO ITESP PARA VALIDAÇÃO DA ACURÁCIA VERTICAL DE MODELOS DIGITAIS DE SUPERFÍCIE
The geometric reliability of Digital Surface Model (DSM) affects the quality of the products generated from it. As a continuation of the research already started and published by Machado et al. (2019), in this paper, we propose the assessment of the vertical accuracy of free-available MDS, using a l...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | Brasil |
| Institución: | Universidade Federal de Uberlândia (UFU) |
| Repositorio: | Caminhos de Geografia |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.www.seer.ufu.br:article/51178 |
| Acceso en línea: | https://seer.ufu.br/index.php/caminhosdegeografia/article/view/51178 |
| Access Level: | acceso abierto |
| Palabra clave: | Controle de qualidade Produção cartográfica Banco de dados geográfico Quality control Cartographic production Geographic Database |
| Sumario: | The geometric reliability of Digital Surface Model (DSM) affects the quality of the products generated from it. As a continuation of the research already started and published by Machado et al. (2019), in this paper, we propose the assessment of the vertical accuracy of free-available MDS, using a large set of points from the Land Management System (SIGEF) and the São Paulo State Land Institute (ITESP) databases. The validation was applied in the following models: DSM v3 SRTM, ALOS-Palsar, ASTER GDEM2 and Bare-Earth SRTM. The initial set of points acquired was subjected to systematic filtering and removal of outliers following recent literature recommendations. The quality control of the DSM was based on the Cartographic Accuracy Standard for Digital Cartographic Products (PEC-PCD). It was concluded that DSM ALOS-Palsar is the most accurate for the study area, followed by DSM v3 SRTM, both being indicated for the elaboration of products in the 1:50.000 scale. Similar studies could be applied for other regions of Brazil to demonstrate the quality of the MDS currently available and to contribute to vertical quality control of these data. |
|---|