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  Indian J Med Microbiol
 

Figure 3: The images were converted to 8-bit type (a, i) and blurred by Gaussian filter (b, j). The resulting image was subtracted (c, k). 128 value was added to the image (d, l) at pixel location. The image was transformed to binary (e, m) and the resultant image was eroded to reduce noise (f, n). The image was dilated and skeletonised (g, o). The fractal dimension (FD) of all the skeletonised images was calculated using fractal box count method. A graph was obtained between box count and box size in log values which showed the fractal dimension value (h, p)

Figure 3: The images were converted to 8-bit type (a, i) and blurred by Gaussian filter (b, j). The resulting image was subtracted (c, k). 128 value was added to the image (d, l) at pixel location. The image was transformed to binary (e, m) and the resultant image was eroded to reduce noise (f, n). The image was dilated and skeletonised (g, o). The fractal dimension (FD) of all the skeletonised images was calculated using fractal box count method. A graph was obtained between box count and box size in log values which showed the fractal dimension value (h, p)