| Título: | Ontology-based topological representation of remote-sensing images |
| Autores: |
Oliva Santos, Rafael Maciá Pérez, Francisco Garea Llano, Eduardo |
| Fecha: |
2013-12-02 2013-12-02 2013-11-20 |
| Publicador: | RUA Docencia |
| Fuente: |
 |
| Tipo: | info:eu-repo/semantics/article |
| Tema: |
Geo-ontology Semantic representation GIS Remote sensing images Spatial relations Arquitectura y Tecnología de Computadores |
| Descripción: | This article proposes an ontology-based topological representation of remote-sensing images. Semantics, especially related to the topological relationships between the objects represented, are not explicit in remote-sensing images and this fact limits spatial analysis. Our aim is to provide an explicit ontological definition of the topological relations between objects in the image using the Quadtree data structure for spatial indexing. This structure is explicitly defined in an ontology allowing the automatic interpretation of the representations obtained, taking into account the topological relations and increasing the spatial analytical capabilities. This representation has been validated by a case study of semantic retrieval based on the normalized difference vegetation index (NDVI), taking into account the topological relations between NDVI regions in images. In the experiments, we compare the effectiveness of results from eight queries using four traditional supervised image classification algorithms and the proposal representation. The experimental results show the feasibility of the proposal, supporting the concept of the image retrieval process providing a semantic complement to remote-sensing images. The proposed representation contributes to incorporation of semantics into geographical data, especially to remote-sensing images, and it can be used to develop applications in the Geospatial Semantic Web. |
| Idioma: | Inglés |
1 Choosing the correct paradigm for unknown words in rule-based machine translation systems por Sánchez Cartagena, Víctor Manuel,Esplà Gomis, Miquel,Sánchez Martínez, Felipe,Pérez Ortiz, Juan Antonio | 6 Análisis Real de Varias Variables II. Problemas (27-3-2013) por Conde Calero, Juan Manuel |
2 Using external sources of bilingual information for on-the-fly word alignment por Esplà Gomis, Miquel,Sánchez Martínez, Felipe,Forcada Zubizarreta, Mikel L. | 7 Introducción a mirada/s trans/identitarias,Introduction to trans-identitary look(s) por Amaro Quintas, Ángel Manuel |
3 | 8 |
4 | 9 |
5 Los espacios periurbanos en el área ibérica contestana: las novedades y algunas reflexiones históricas por Sala Sellés, Feliciana | 10 Matrimonio igualitario y parentesco: discursos, hegemonías y acontecimiento,Egalitarian marriage and kinship: discourses, hegemony and event por Buzaglo, Analía,Morandi, Mariela,Culla, Mónica |