AVHRR channel selection for land cover classification
| Autor: | S. K. Maxwell, R. M. Hoffer, P. L. Chapman |
|---|---|
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | International Journal of Remote Sensing. 23:5061-5073 |
| ISSN: | 1366-5901 0143-1161 |
| DOI: | 10.1080/01431160210145588 |
| Popis: | Mapping land cover of large regions often requires processing of satellite images collected from several time periods at many spectral wavelength channels. However, manipulating and processing large amounts of image data increases the complexity and time, and hence the cost, that it takes to produce a land cover map. Very few studies have evaluated the importance of individual Advanced Very High Resolution Radiometer (AVHRR) channels for discriminating cover types, especially the thermal channels (channels 3, 4 and 5). Studies rarely perform a multi-year analysis to determine the impact of inter-annual variability on the classification results. We evaluated 5 years of AVHRR data using combinations of the original AVHRR spectral channels (1-5) to determine which channels are most important for cover type discrimination, yet stabilize inter-annual variability. Particular attention was placed on the channels in the thermal portion of the spectrum. Fourteen cover types over the entire state of Colorado were e... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|