METHODOLOGY FOR THE EXTRACTION OF HOMOLOGOUS POINTS FROM A DEM/DSM TO EVALUATE THE RELATIVE POSITIONAL ACCURACY
| Autor: | Aluir Porfírio Dal Poz, Paulo César Emiliano, Nilcilene das Graças Medeiros, Dalto Domingos Rodrigues, Gérson Rodrigues dos Santos, Afonso de Paula dos Santos |
|---|---|
| Přispěvatelé: | Universidade Federal de Viçosa (UFV), Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
biology
Computer science business.industry positional accuracy DEM Pattern recognition Terrain Shuttle Radar Topography Mission biology.organism_classification DSM Photogrammetry spatial data quality Spatial data quality General Earth and Planetary Sciences homologous point extraction Artificial intelligence Scale (map) business Aster (genus) |
| Zdroj: | Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Boletim de Ciências Geodésicas v.26 n.2 2020 Boletim de Ciências Geodésicas Universidade Federal do Paraná (UFPR) instacron:UFPR Boletim de Ciências Geodésicas, Volume: 26, Issue: 2, Article number: e2020007, Published: 22 MAY 2020 |
| ISSN: | 1982-2170 |
| Popis: | Made available in DSpace on 2020-12-10T20:01:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01. Added 1 bitstream(s) on 2021-07-15T15:25:05Z : No. of bitstreams: 1 S1982-21702020000200202.pdf: 2257362 bytes, checksum: 47ff6929009b499649cf97303300d0db (MD5) This work presents a new methodology for extracting 3D homologous points from a DEM/DSM for relative evaluation of positional accuracies, from terrain features such as ridgelines and hydrography. Firstly, it extracts 3D intersection points between the linear features and then it performs a selection of these homologous points. A discussion regarding the spatial resolution effect of the DEM/DSM on the proposed methodology is carried out. As case study, the planimetric and altimetric positional accuracies evaluation of SRTM (X-band) and Aster GDEM (version 2) DSMs was conducted using, as reference, a DSM obtained via photogrammetry. The SRTM and Aster GDEM (version 2) DSMs showed similar classifications, that is, Class A for the altimetry and Class B for the planimetry at the 1:100,000 scale, according to the Brazilian technical standard of positional accuracy. Univ Fed Vicosa UFV, Dept Engn Civil, Setor Engn Agrimensura & Cartog, Vicosa, MG, Brazil Univ Estadual Paulista UNESP, Fac Ciencia & Tecnol, Dept Cartog, Presidente Prudente, SP, Brazil Univ Fed Vicosa UFV, Dept Estat, Vicosa, MG, Brazil Univ Estadual Paulista UNESP, Fac Ciencia & Tecnol, Dept Cartog, Presidente Prudente, SP, Brazil |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|