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SETSCI - Volume 3 (2018)
ISAS2018-Winter - 2nd International Symposium on Innovative Approaches in Scientific Studies, Samsun, Turkey, Nov 30, 2018

Improving Hyperspectral Image Classification with Watershed Segmentation-Based Texture Features (ISAS2018-Winter_67)
Çiğdem Şerifoğlu Yılmaz1, Volkan Yılmaz2*, Oğuz Güngör3
1Karadeniz Technical University, Trabzon, Turkey
2Karadeniz Technical University, Trabzon, Turkey
3Karadeniz Technical University, Trabzon, Turkey
* Corresponding author: volkanyilmaz.jdz@gmail.com
Published Date: 2019-01-14   |   Page (s): 353-356   |    33     6

ABSTRACT Hyperspectral images offer a good separability among land cover classes, owing to their advantages to provide spectral
bands with narrow wavelength intervals. It is also possible to further increase classification accuracy of hyperspectral images by
integrating some auxiliary data to classification process. The aim of this study was to increase the classification accuracy of
AVIRIS (Airborne Visible Infrared Imaging Spectrometer) and ROSIS (Reflective Optics System Imaging Spectrometer)
hyperspectral data by integrating the Watershed Segmentation (WS)-based texture features to the SVM (Support Vector
Machines) and RF (Random Forest) classification process. Since the used hyperspectral images contained a high number of
bands, the PCA (Principal Component Analysis) technique was used to reduce the dimensionality of texture features and avoid
redundant texture characteristics. It was found that the used procedure increased the RF classification accuracy of the AVIRIS
and ROSIS data by 13.89% and 23.93%, respectively. It was also concluded that the SVM classification accuracy of the AVIRIS
and ROSIS data was increased by 18.89% and 30.42%, respectively.  
KEYWORDS image classification, texture extraction, watershed segmentation, hyperspectral imagery
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