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Visual Cryptography

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Generation of two-out-of-two Visual Cryptography Scheme shares.

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This program generates a two-out-of-two Visual Cryptography Scheme shares. The input image for this program should be a binary image. The shares and the overlapping result of the shares are written as output. The Shares (1 & 2) can be printed in separate transparent sheets and overlapping them reveals the secret image.

PRANESH KULKARNI

SHIVA SHAHI

SHIVA SHAHI (view profile)

myetceteramail myetceteramail

myetceteramail myetceteramail (view profile)

if i want 3 shares. then i each pixel would be divided into three shares, so that should make the size of each share 3 times the original image. But i am getting the results for just wice the size. I am not able to understand the concept?

Troy Steiner

Troy Steiner (view profile)

Is there a way to use this so a single share1 image can complement multiple share2 images resulting in distinct overlap images?
a+b=c
a+d=e
a+f=g
....

Sandhya stanley

Sandhya stanley (view profile)

sir how do i do for multiple share

EL HAMDAOUI Atman

manal rezz

Nikesh Tanwer

ashwathy dev

ashwathy dev (view profile)

Sir What is the difference in the effect of 4 shares and 6 shares.

ANUSREE

ANUSREE (view profile)

sir how to apply vcs to color face images.. relpy me fast sir

ANUSREE

ANUSREE (view profile)

sir how to apply vcs to color face images.. rely me fast sir

draj

dipjit

dipjit

dipjit (view profile)

what is the meaning of the code portion"
pixShare=generateShare(s1a,s1b);
share1((a),(2*b-1):(2*b))=pixShare(1,1:2);
share2((a),(2*b-1):(2*b))=pixShare(2,1:2);"
and is the pixShare is a variable which is userdefined or it is a function from matlab library.

Huynh Tu

STEVEN

ambika poojary

ambika poojary (view profile)

I want code for 2 out 3 sheme sharing visual cryptography,can you explain the code u used in 2outof 2 scheme, the line is share1((a),(2*b-1):(2*b))=pixShare(1,1:2); pls?

I have the same question as how to generate the same shares for colour images.

sander

sander (view profile)

sir how to generate the same shares for colour images. shares of red green and blue. den combining them to get colour visual cryptography

Gopi Subramanian

Gopi Subramanian (view profile)

Why pixel expansion 2 is used?. Comments not enough.
Open source is way the technology free to learn, not just code.
- Freedom Software

priya anthony

priya anthony (view profile)

Hi Athi
It is quite interesting could u tell me how to do it for 3 out of 3 scheme

Christopher

Christopher (view profile)

Quite Interesting. Its working for my own images.