Impact of discrete wavelet transform on discriminating airborne hyperspectral tropical rainforest tree species

Azadeh Ghiyamat; Helmi Zulhaidi Mohd Shafri; Ghafour Amouzad Mahdiraji; Ravshan Ashurov; Abdul Rashid Mohamed Shariff; Shattri Mansor

doi:10.1117/1.JRS.8.083556

3 September 2014 Impact of discrete wavelet transform on discriminating airborne hyperspectral tropical rainforest tree species

Azadeh Ghiyamat, Helmi Zulhaidi Mohd Shafri, Ghafour Amouzad Mahdiraji, Ravshan Ashurov, Abdul Rashid Mohamed Shariff, Shattri Mansor

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 8, Issue 1, 083556 (September 2014). https://doi.org/10.1117/1.JRS.8.083556

Abstract

Discriminating tropical rainforest tree species is still a challenging task due to a variety of species with high spectral similarity and due to very limited studies conducted in this area. We are investigating the effect of discrete wavelet transform (DWT) on enhancing discrimination of tropical rainforest tree species. For this purpose, airborne imaging spectrometer for applications (AISA) airborne hyperspectral data obtained from Malaysian’s rainforest area are used; six tree species were selected from the study area. For comparison purposes, the performance of DWT is compared with the original reflectance, first, and second derivative spectra by using five different spectral measure techniques. An overall discrimination accuracy of ∼74% is obtained with DWT using Euclidean distance, which outperforms the original reflectance and first and second derivatives by ∼16.6 , 11.9, and 22.1%, respectively. The results suggest a significant impact of the DWT approach on improving tropical rainforest tree species discrimination.

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Azadeh Ghiyamat, Helmi Zulhaidi Mohd Shafri, Ghafour Amouzad Mahdiraji, Ravshan Ashurov, Abdul Rashid Mohamed Shariff, and Shattri Mansor "Impact of discrete wavelet transform on discriminating airborne hyperspectral tropical rainforest tree species," Journal of Applied Remote Sensing 8(1), 083556 (3 September 2014). https://doi.org/10.1117/1.JRS.8.083556

Published: 3 September 2014

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