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Proceedings Paper

Mapping of total suspended solids in reservoir using images captured by a conventional digital camera from a low-altitude light aircraft
Author(s): Mohammad Zubir Mat Jafri; Khiruddin Abdullah; Hwe San Lim; Wan Ruslan bin Ismail
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Paper Abstract

The feasibility of using digital camera imagery for estimating the concentration of total suspended sediments (TSS) in the Timah Tasoh reservoir was investigated. Digital images were captured from a low-altitude light aircraft. Three selected images were mosaiced to produce bigger image of the study area. Atmospheric corrections and mosaic sincronourization were performed by using the average digital number of grass in the images as a reference value. Water samples were collected simultaneously with the airborne image acquisition and later analyzed in the laboratory. The color mosaic image was separated into three bands assigned as red, green and blue bands and analysis separately. The digital numbers for each bands corresponding to the ground-truth locations were extracted and used for calibration of the water quality algorithm. A single band second order polynomial algorithm was used in this study due to limited ground-truth data. The calibrated algorithm was used to generate the water quality maps. The proposed algorithm can estimate TSS concentration with linear correlation coefficient square (R2) of 0.98.

Paper Details

Date Published: 8 May 2003
PDF: 6 pages
Proc. SPIE 4892, Ocean Remote Sensing and Applications, (8 May 2003); doi: 10.1117/12.466076
Show Author Affiliations
Mohammad Zubir Mat Jafri, Univ. Sains Malaysia (Malaysia)
Khiruddin Abdullah, Univ. Sains Malaysia (Malaysia)
Hwe San Lim, Univ. Sains Malaysia (Malaysia)
Wan Ruslan bin Ismail, Univ. Sains Malaysia (Malaysia)


Published in SPIE Proceedings Vol. 4892:
Ocean Remote Sensing and Applications
Robert J. Frouin; Yeli Yuan; Hiroshi Kawamura, Editor(s)

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