Shuo-Fang Hsu, Yu-Jie Chang, Ran-Zan Wang, Yeuan-Kuen Lee, Shih-Yu Huang

furiouserectAI and Robotics

Nov 21, 2013 (3 years and 8 months ago)

85 views

Shuo
-
Fang Hsu, Yu
-
Jie

Chang, Ran
-
Zan

Wang,
Yeuan
-
Kuen

Lee, Shih
-
Yu Huang



2012 sixth international conference on genetic and evolutionary
computing

*
(a) Secret image.

(b) Tag image 1.

(c) Tag image 2.

Share 1.

Share 2.

Recovered
secret image.

Recovered tag image 1.

Recovered tag image 2.

Folding up share 1
.

Folding up share 2
.

(a) Secret image.

(b)
Verification image.

Share 1.

Share 2.

Recovered
secret image.

Recovered
verification image.

Stack them by share1
right
-
half to share2
left
-
half, and share1
left
-
half to share2
right
-
half.

w

[0]


V

b

[1]

If
Verification image pixel
= “b”, but corresponding
pixels both are “w”.

Random choose one pixel to set black.

w

[0]

Share1

Share2

b

[1]

w

[0]

Share1

Share2

If Verification image pixel

= “w”, but one of
corresponding pixel are “w”.

Have ¼ probability to set “w” to “b”.

w

[0]


V

w

[0]

b

[1]

Share1

Share2

b

[1]

b

[1]

Share1

Share2

T

corresponding
pixel on share

Whether

the pixel
need to change or
not

stack

result

b

w

w

b

w

b

w

b

b

w

b

w

b

b

b

w

b

w

b

b

b

b

b

b

w

w

w

w

w

w

w

b

b

b

w

b

w

b

w

b

b

b

b

b

b

w

b

w

b

b

b

b

b

b

b

b

b