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Discovery

Cracking the Code of Images

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A picture of the setting sun off the coast of Estonia and the letter "A."

This picture of the setting sun off the coast of Estonia was taken in the fall of 1999 from a ferry boat on a return trip to Helsinki, Finland. The letters "A" and "B" (next image) were added in 2005 to create an example of steganography. One of the images, "A," contains a map of downtown Washington, D.C., hidden in the least significant bits of the green color.

Credit: Charles Boncelet, University of Delaware


Download the high-resolution TIF version of the image. (933 KB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.

A picture of the setting sun off the coast of Estonia and the letter "B."

This picture of the setting sun off the coast of Estonia was taken in the fall of 1999 from a ferry boat on a return trip to Helsinki, Finland. The letters "A" (previous image) and "B" were added in 2005 to create an example of steganography. The image with the letter "A" contains a map of downtown Washington, D.C., hidden in the least significant bits of the green color.

Credit: Charles Boncelet, University of Delaware


Download the high-resolution TIF version of the image. (933 KB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.