Algorithm for total suspended solids mapping using digital camera images

Mohammad Zubir Mat Jafri; Khiruddin Abdullah; Hwe San Lim; Mohd Noordin bin Abu Bakar; Zubir Bin Din; Steve Marshall

doi:10.1117/12.467269

8 May 2003 Algorithm for total suspended solids mapping using digital camera images

Mohammad Zubir Mat Jafri, Khiruddin Abdullah, Hwe San Lim, Mohd Noordin bin Abu Bakar, Zubir Bin Din, Steve Marshall

Proceedings Volume 4892, Ocean Remote Sensing and Applications; (2003) https://doi.org/10.1117/12.467269
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

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.

Citation Download Citation

Mohammad Zubir Mat Jafri, Khiruddin Abdullah, Hwe San Lim, Mohd Noordin bin Abu Bakar, Zubir Bin Din, and Steve Marshall "Algorithm for total suspended solids mapping using digital camera images", Proc. SPIE 4892, Ocean Remote Sensing and Applications, (8 May 2003); https://doi.org/10.1117/12.467269

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