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  Indian J Med Microbiol
 

Figure 3: (a) Input image and its histogram, (b) processed image with global histogram equalization and its histogram, (c) Processed image with global histogram equalization followed by normalization and its histogram, (d) global histogram equalization, contrast stretch, and normalization

Figure 3: (a) Input image and its histogram, (b) processed image with global histogram equalization and its histogram, (c) Processed image with global histogram equalization followed by normalization and its histogram, (d) global histogram equalization, contrast stretch, and normalization