The Potential Use of Digital Image in Turbidity Measurement

概要

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This study is conducted to determine the potential of digital images in turbidity measurement. To do this, image data of turbid water is obtained using a digital camera in the laboratory, and the possibility of the qualitative analysis of turbidity using imaging control software is examined. The experiments reveal a relationship between the average image brightness of a digital image, obtained by special software technique, and the turbidity measured by a turbidimeter. Photographs of a digital image are not affected directly or indirectly by the lighting conditions. The relationship between turbidity and the average image brightness is highly significant in 4 channels, GRAY, RED, GREEN and BLUE. However, BLUE is determined to be most suitable because of the large gradient of the regression line. This is proved by field data during a rainfall event.
日本雨水資源化システム学会の論文