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Reducing the impacts of intra-class spectral variability on the accuracy of soft classification and super-resolution mapping of shoreline
- Doan, Huong T. X., Foody, Giles M., Tien Bui, Dieu
- International journal of remote sensing 2019 v.40 no.9 pp. 3384-3400
- Landsat, remote sensing, shorelines
- The main objective of this research is to assess the impact of intra-class spectral variation on the accuracy of soft classification and super-resolution mapping. The accuracy of both analyses was negatively related to the degree of intra-class spectral variation, but the effect could be reduced through the use of spectral sub-classes. The latter is illustrated in mapping the shoreline at a sub-pixel scale from Landsat ETM+ data. Reducing the degree of intra-class spectral variation increased the accuracy of soft classification, with the correlation between predicted and actual class coverage rising from 0.87 to 0.94, and super-resolution mapping, with the RMSE in shoreline location decreasing from 41.13 m to 35.22 m.