Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
| one publication added to basket [125765] |
Sediment facies classification of a sandy shoreline by means of airborne imaging spectroscopy
Deronde, B.; Kempeneers, P.; Houthuys, R.; Henriet, J.-P.; Van Lancker, V. (2008). Sediment facies classification of a sandy shoreline by means of airborne imaging spectroscopy. Int. J. Remote Sens. 29(15): 4463-4477. https://dx.doi.org/10.1080/01431160801891804
In: International Journal of Remote Sensing. Taylor & Francis: London. ISSN 0143-1161; e-ISSN 1366-5901, meer
|  |
| Abstract |
Airborne imaging spectroscopy data (AISA Eagle and HyMap) were applied to classify the sediments of a sandy beach in seven sand type classes. On the AISA-Eagle data, several classification strategies were tried out and compared with each other. The best classification results were obtained applying a linear discriminant classifier (LDC) in combination with feature selection based on sequential floating forward search (SFFS). The statistical LDC was used in a multiple binary approach. In the first step, the original bands were used in the classification, but transformation of the bands to wavelet coefficients enhanced the accuracy obtained. The combination of LDC with SFFS resulted in an overall accuracy of 82% (using three wavelet coefficients). Replacing the LDC with the non-statistical SAM algorithm reduced the overall accuracy to 74% (using all bands or wavelet coefficients). When applying LDC, the optimal number of bands/wavelet coefficients to be used was defined: using more than two bands or three wavelet coefficients did not result in a higher classification accuracy. Finally, the HyMap data, featuring 126 bands in the VNIR-SWIR range, were used to demonstrate that the VNIR range outperforms the SWIR range for this application. |
| Dataset |
- Hyperspectrale vliegtuigopnamen strand Vlaamse kust, geïntegreerd met LIDAR, meer
|
IMIS is ontwikkeld en wordt gehost door het VLIZ.
