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Digital Image Processing Chapter 3. Image Enhancement Hanoi University of Science and Technology 1/27 School of Electronics and Telecommunications 1 Hanoi University of Science and Technology 2/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 3/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 4/27 School of Electronics and Telecommunications ì L if u = 1 i v = í ; u = (u -1 , L , u , , u ) and n = log 2 L n i L 0 ỵ0 otherwise Hanoi University of Science and Technology 5/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 6/27 School of Electronics and Telecommunications u v D F u ( u ) = ò p u ( x ) dx 0 Hanoi University of Science and Technology 7/27 School of Electronics and Telecommunications u v = å p ( x ) u i x = 0 i é v - v ù min v = Int ê ( - 1 + 0 5 L ) ú ë 1 - v min û * Hanoi University of Science and Technology 8/27 School of Electronics and Telecommunications u é v - v ù min v = å p ( x ) v* = Int ê ( L - 1 + 0 5 ) ú u i 1 - v x = 0 ë min û i Hanoi University of Science and Technology 9/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 10/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 13/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 14/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 15/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 16/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 17/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 18/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 19/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 20/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 21/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 22/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 23/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 24/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 25/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 26/27 School of Electronics and Telecommunications Hanoi University of Science and Technology 27/27 School of Electronics and Telecommunications