A MEASUREMENT OF SUSPENDED MUD CONCENTRATION BY USING LUMINANCE DATA OF IMAGE

Abstract

As a method of measuring the temporal and spatial distribution of suspended mud concentration in water, an image processing technique is proposed in the present paper. An equation that represents the relationship between luminance in the image and the concentration of the suspended mud in water is derived by taking the effect of light attenuation into consideration. Based on the luminance data of images that are visualized under uniform concentration conditions, both the modified equation, in which the effect of scatter of the light is introduced, and the optimized values of coefficients in its equation are obtained. The accuracy of the present method is verified by comparing the estimated concentrations with the experimental ones.