Single Character Image Steganography

encrypted character

a

random grayscale image

random color image

random seed

100

originalimage

3.29

86.70

57.14

177.78

116.33

234.52

78.71

66.67

224.74

112.89

11.76

244.85

194.81

33.45

180.65

120.32

216.91

28.25

49.76

216.92

67.05

0.83

12.52

3.08

encryptedimage

2.01

87.34

57.22

176.69

116.45

234.92

78.31

67.26

224.88

112.44

12.05

244.96

194.76

32.13

180.71

120.47

216.85

28.11

50.20

216.85

66.26

0.00

12.05

2.01

adjustedsubtraction

1.29

-0.65

-0.08

1.09

-0.12

-0.40

0.40

-0.60

-0.14

0.46

-0.29

-0.11

0.05

1.32

-0.06

-0.15

0.06

0.14

-0.43

0.07

0.79

0.83

0.47

1.07

decryptedcharacter:

a

This Demonstration shows how a character can be hidden in an image with least significant bit substitution. You can see that the encrypted image is indistinguishable from the original. The "adjusted subtraction" image shows the difference between the images.