kernels is equal to 35.39 pixels on the average. Using Eq.
(2), the FCCl was obtained as 4.73. The calibration between
the mass and number values of PBK indicated a high coefficient
of determination (R2 = 0.988) between the manual
measurement and image processing methods (Fig. 3). The
mean accuracy of the image processing algorithm in calculation
of PBK was 98.71%. In the case of PBK index,
although a high coefficient of determination (R2 = 0.989)
was obtained between the manual and image processing
methods, as mentioned in the previous sections, the number
value of PBK was used in the FIS.
The results of calibration for DOM index are shown in
Fig. 4. As it can be seen, the DOM obtained by the image
analysis method and that by the laboratory analysis had