Title :
Correction of land-cover area estimates from low spatial resolution remotely sensed data
Author_Institution :
Dept. of Geogr., North Carolina Univ., Chapel Hill, NC, USA
Abstract :
A two stage modeling strategy improves area estimates by correcting coarse-resolution measurements of class proportions. Stage I models use measurements of landscape spatial properties to estimate the slope and intercept of proportion transition relationships. A stage II model uses a regression estimator to predict true class proportions based on measured coarse-scale proportions, and the slope and intercept estimates from the stage I models. Model development and testing on a calibration site is followed by testing and inversion for a validation site. A probabilistic sampling strategy allows statistical assessment of the models and results
Keywords :
geophysical signal processing; geophysical techniques; image processing; remote sensing; area estimation; correction; geophysical measurement technique; land cover; land surface; land-cover area estimate; landscape spatial properties; low spatial resolution; probabilistic sampling strategy; remote sensing; statistical assessment; terrain mapping; two stage model; two stage modelling; Area measurement; Calibration; Context modeling; Geography; Image sampling; Predictive models; Sampling methods; Scattering; Spatial resolution; Testing;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516398