A Cluster Graph Approach to Land Cover Classification Boosting
| Autor: | Simon Streicher, Ekaterina Chuprikova, Johan A. du Preez, Lloyd Haydn Hughes |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Volunteered geographic information
Earth observation cluster graphs Information Systems and Management Geospatial analysis Boosting (machine learning) 010504 meteorology & atmospheric sciences Computer science Cluster graph 0211 other engineering and technologies 02 engineering and technology Land cover computer.software_genre 01 natural sciences crowdsourcing data land cover probabilistic graphical models Graphical model 021101 geological & geomatics engineering 0105 earth and related environmental sciences OSM Probabilistic logic lcsh:Z ddc lcsh:Bibliography. Library science. Information resources Computer Science Applications ComputingMethodologies_PATTERNRECOGNITION classification Data mining computer Information Systems |
| Zdroj: | Data, Vol 4, Iss 1, p 10 (2019) Data Volume 4 Issue 1 |
| ISSN: | 2306-5729 |
| DOI: | 10.3390/data4010010 |
| Popis: | When it comes to land cover classification, the process of deriving the land classes is complex due to possible errors in algorithms, spatio-temporal heterogeneity of the Earth observation data, variation in availability and quality of reference data, or a combination of these. This article proposes a probabilistic graphical model approach, in the form of a cluster graph, to boost geospatial classifications and produce a more accurate and robust classification and uncertainty product. Cluster graphs can be characterized as a means of reasoning about geospatial data such as land cover classifications by considering the effects of spatial distribution, and inter-class dependencies in a computationally efficient manner. To assess the capabilities of our proposed cluster graph boosting approach, we apply it to the field of land cover classification. We make use of existing land cover products (GlobeLand30, CORINE Land Cover) along with data from Volunteered Geographic Information (VGI), namely OpenStreetMap (OSM), to generate a boosted land cover classification and the respective uncertainty estimates. Our approach combines qualitative and quantitative components through the application of our probabilistic graphical model and subjective expert judgments. Evaluating our approach on a test region in Garmisch-Partenkirchen, Germany, our approach was able to boost the overall land cover classification accuracy by 1.4% when compared to an independent reference land cover dataset. Our approach was shown to be robust and was able to produce a diverse, feasible and spatially consistent land cover classification in areas of incomplete and conflicting evidence. On an independent validation scene, we demonstrated that our cluster graph boosting approach was generalizable even when initialized with poor prior assumptions. |
| Databáze: | OpenAIRE |
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