Histogram as image

Monday 1 October 2007

David at Ironic Sans had a cool idea: hide an image in the histogram of another image. Not a generally useful technique, but a neat hack that demonstrates that a stream of data may be interpretable in unusual ways. Nick Fisher took it one step further and made an online tool for creating these.

A commenter points to images hidden in audio spectrographs, a similar idea.

All these techniques are forms of steganography, the art of hiding messages inside other messages. It's a form of secret communication complete distinct from cryptography, and has a long, rich and fascinating history.

Completely off-topic: Ironic Sans also has a witty line of pre-pixelated T-shirts for reality TV.

Comments

[gravatar]
David Boudreau 12:48 AM on 3 Oct 2007

cool, reminds me of that part in the movie Contact.

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