The original image:

The first share:

The second share:

The third share:

The fourth share:

Shares 1 and 2 superimposed:

Shares 1 and 3 superimposed:

Shares 3 and 4 superimposed:

You can download postscript files of the four shares:

• share #1
• share #2
• share #3
• share #4

Back to Doug Stinson's visual cryptography page: click here.