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Proceedings Paper

Algorithm for total suspended solids mapping using digital camera images
Author(s): Mohammad Zubir Mat Jafri; Khiruddin Abdullah; Hwe San Lim; Mohd Noordin bin Abu Bakar; Zubir Bin Din; Steve Marshall
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Paper Abstract

An algorithm was developed based on reflectance model of inherent properties of seawater. A digital camera was used to capture digital images of river estuaries of Prai, Muda, and Merbok from a low altitude flying light aircraft. Water samples were collected simultaneously with the airborne image acquisition and later analyzed in the laboratory. Vertical images were captured through a special hole at the floor of the aircraft. Atmospheric correction for multidate images was performed by selecting average digital number of grass as a reference. The digital colour images of the study areas were separated into three bands (red, green and blue) for multi-spectral analysis. The digital numbers for each band corresponding to the sea-truth locations were extracted and used to calibrate the algorithm. The calibrated total suspended solids (TSS) algorithm was then used to generate the water quality maps of the study areas. This study indicates that a digital camera can be a useful tool for airborne remote sensing. The newly developed algorithm can estimate TSS concentration with linear correlation coefficient square (R2) of 0.94.

Paper Details

Date Published: 8 May 2003
PDF: 6 pages
Proc. SPIE 4892, Ocean Remote Sensing and Applications, (8 May 2003); doi: 10.1117/12.467269
Show Author Affiliations
Mohammad Zubir Mat Jafri, Univ. Sains Malaysia (Malaysia)
Khiruddin Abdullah, Univ. Sains Malaysia (Malaysia)
Hwe San Lim, Univ. Sains Malaysia (Malaysia)
Mohd Noordin bin Abu Bakar, Univ. Sains Malaysia (Malaysia)
Zubir Bin Din, Univ. Sains Malaysia (Malaysia)
Steve Marshall, Univ. of Strathclyde (United Kingdom)

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

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