Fig. 2

Sample example of the primary image and its corrected outcome: (A-1) input image, (A-2) histogram of (A-1), (B-1) enhanced image, and (B-2) histogram of (B-1).

Sample example of the primary image and its corrected outcome: (A-1) input image, (A-2) histogram of (A-1), (B-1) enhanced image, and (B-2) histogram of (B-1).