Active Image Forgery Detection Using Cellular Automata - Cellular Automata in Image Processing and Geometry - page 138

Ta b l e 7 . 7 PSNR evaluation of the proposed approaches. Three different logical operations
and two arithmetic operations are used in this experiment. We used a hundred images for both
scenarios, putting the average in this table.
Approach PSNR
Scenario 1: (XOR operation + embedding into the first and middle eight pixels 39.11
Scenario 1: XOR operation + embedding into first, middle and end eight pixels 39.04
Scenario 1: AND operation + embedding into first eight pixels 39.25
Scenario 1: AND operation + embedding into first and middle eight pixels 39.21
Scenario 1: AND operation + embedding into first, middle and end eight pixels 39.01
Scenario 1: OR operation + embedding into first eight pixels 39.27
Scenario 1: OR operation + embedding into first and middle eight pixels 39.22
Scenario 1: OR operation + embedding into first, middle and end eight pixels 39.16
Scenario 1: Addition operation + embedding into first eight pixels 37.76
Scenario 1: Addition operation + embedding into first and middle eight pixels 37.58
Scenario 1: Addition operation + embedding into first, middle and end eight pixels 37.51
Scenario 1: Multiply operation + embedding into first eight pixels 37.69
Scenario 1: Multiply operation + embedding into first and middle eight pixels 37.57
Scenario 1: Multiply operation + embedding into first, middle and end eight pixels 37.42
Scenario 2: XOR operation + embedding into first eight pixels 38.13
Scenario 2: XOR operation + embedding into first and middle eight pixels 38.07
Scenario 2: XOR operation + embedding into first, middle and end eight pixels 37.92
Scenario 2: AND operation + embedding into first eight pixels 38.19
Scenario 2: AND operation + embedding into first and middle eight pixels 38.11
Scenario 2: AND operation + embedding into first, middle and end eight pixels 38.05
Scenario 2: OR operation + embedding into first eight pixels 38.28
Scenario 2: OR operation + embedding into first and middle eight pixels 38.16
Scenario 2: OR operation + embedding into first, middle and end eight pixels 38.08
Scenario 2: Addition operation + embedding into first eight pixels 36.14
Scenario 2: Addition operation + embedding into first and middle eight pixels 36.10
Scenario 2: Addition operation + embedding into first, middle and end eight pixels 36.01
Scenario 2: Multiply operation + embedding into first eight pixels 36.36
Scenario 2: Multiply operation + embedding into first and middle eight pixels 36.27
Scenario 2: Multiply operation + embedding into the first, middle and end eight pixels) 36.12