UPM Institutional Repository

Airborne hyperspectral discrimination of tree species with different ages using discrete wavelet transform


Citation

Ghiyamat, A. and Mohd Shafri, Helmi Zulhaidi and Mahdiraji, G .A. and Ashurov, R. and Mohamed Shariff, Abd Rashid and Mansor, Shattri (2015) Airborne hyperspectral discrimination of tree species with different ages using discrete wavelet transform. International Journal of Remote Sensing, 36 (1). pp. 318-342. ISSN 0143-1161; ESSN: 1366-5901

Abstract

In this article, the capability of discrete wavelet transform (DWT) to discriminate tree species with different ages using airborne hyperspectral remote sensing is investigated. The performance of DWT is compared against commonly used traditional methods, i.e. original reflectance and first and second derivatives. The hyperspectral data are obtained from Thetford forest of the UK, which contains Corsican and Scots pines with different ages and broadleaved tree species. The discrimination is performed by employing three different spectral measurement techniques (SMTs) including Spectral Angle Mapper (SAM), Spectral Information Divergence (SID), and a combination of SAM and SID. Five different mother wavelets with a total of 50 different orders are tested. The wavelet detail coefficient (CD) from each decomposition level and combination of all CDs plus the approximation coefficient from the final decomposition level (C-All) are extracted from each mother wavelet. The results show the superiority of DWT against the reflectance and derivatives for all the three SMTs. In DWT, C-All provided the highest discrimination accuracy compared to other coefficients. An over- all accuracy difference of about 20 – 30% is observed between the finest coefficient and C-All. Amongst the SMTs, SID provided the highest accuracy, while SAM showed the lowest accuracy. Using DWT in combination with SID, an overall accuracy up to around 71.4% is obtained, which is around 13.5%, 14.7%, and 27% higher than the accuracies achieved with reflectance and first and second derivatives, respectively.


Download File

[img]
Preview
PDF (Abstract)
Airborne hyperspectral discrimination of tree species with different ages using discrete wavelet transform..pdf

Download (103kB) | Preview
Official URL or Download Paper: http://www.tandfonline.com/loi/tres20

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Institute of Gerontology
DOI Number: https://doi.org/10.1080/01431161.2014.995272
Publisher: Taylor & Francis
Keywords: Discrete Wavelet Transform (DWT); Airborne hyperspectral
Depositing User: Mohd Hafiz Che Mahasan
Date Deposited: 08 Aug 2016 07:07
Last Modified: 08 Aug 2016 07:07
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/01431161.2014.995272
URI: http://psasir.upm.edu.my/id/eprint/43683
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item