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Visual Cryptography and Bit-Plane Complexity Segmentation in Python
...Cyberbit lets you transmit a secret message to an intended person in a new manner.
The secret message is an 1-bit deep black & white image. The message can contain
written text, a drawing, a secret code etc. Using Visual Cryptography the
application splits the secret message into two "shadow images" called <<shares>>.
Any of the two shares will be embedded into a "normal" image file called by tradition
<<vessel>>. You can use a method of hand to send the two vessels to your correspondent.
For instance you can post one vessel image on facebook. ...