Mapping of total suspended solids in reservoir using images captured by a conventional digital camera from a low-altitude light aircraft

Mohammad Zubir Mat Jafri; Khiruddin Abdullah; Hwe San Lim; Wan Ruslan bin Ismail

doi:10.1117/12.466076

8 May 2003 Mapping of total suspended solids in reservoir using images captured by a conventional digital camera from a low-altitude light aircraft

Mohammad Zubir Mat Jafri, Khiruddin Abdullah, Hwe San Lim, Wan Ruslan bin Ismail

Author Affiliations +

Proceedings Volume 4892, Ocean Remote Sensing and Applications; (2003) https://doi.org/10.1117/12.466076
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

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.

Citation Download Citation

Mohammad Zubir Mat Jafri, Khiruddin Abdullah, Hwe San Lim, and Wan Ruslan bin Ismail "Mapping of total suspended solids in reservoir using images captured by a conventional digital camera from a low-altitude light aircraft", Proc. SPIE 4892, Ocean Remote Sensing and Applications, (8 May 2003); https://doi.org/10.1117/12.466076

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