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| Global fjernmålingsklassifikation× | Hot Spot Analysis (Getis-Ord Gi*)× | |
|---|---|---|
| Fagområde | Rumlig analyse | Rumlig analyse |
| Familie | Regression model | Regression model |
| Oprindelsesår≠ | 1970s–1980s (pixel-based global classifiers); global land-cover products 1990s–2000s | 1992 |
| Ophavsperson≠ | Rosenfeld & Kak; Jensen; Campbell & Wynne (textbook codifications) | Arthur Getis and J. Keith Ord |
| Type≠ | Supervised / unsupervised image classification | Local spatial statistic |
| Oprindelig kilde≠ | Campbell, J. B., & Wynne, R. H. (2011). Introduction to Remote Sensing (5th ed.). Guilford Press. ISBN: 978-1609181765 | Getis, A., & Ord, J. K. (1992). The analysis of spatial association by use of distance statistics. Geographical Analysis, 24(3), 189-206. DOI ↗ |
| Aliasser | global pixel-based classification, global image classification, wall-to-wall remote sensing classification, global land cover classification | Getis-Ord Gi* statistic, spatial hot spot detection, cluster and outlier analysis, HSA |
| Relaterede≠ | 3 | 5 |
| Resumé≠ | Global Remote Sensing Classification assigns every pixel across an entire image or worldwide dataset to a discrete land-cover or thematic class. Treating the scene uniformly — rather than adapting to local subregions — this wall-to-wall approach underpins continental and global land-cover products such as GlobCover, FROM-GLC, and ESA CCI Land Cover. | Hot Spot Analysis uses the Getis-Ord Gi* local spatial statistic to identify geographic locations where high or low attribute values cluster together to a degree that is statistically significant. Each feature is evaluated in relation to its neighbours, producing a z-score that flags genuine spatial hot spots and cold spots against a background of random variation. |
| ScholarGateDatasæt ↗ |
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