Digital Watermarking
Imperceptible to the Human Senses
Digimarc's digital watermarking technologies allow users to embed into audio, images, video and printed documents a digital code that is imperceptible during normal use but readable by computers and software.
A Digimarc digital watermark is a special message embedded in an image, whether it is a photo, video or other digital content. Digimarc's software embeds these "imperceptible" messages by making subtle changes to the data of the original digital content. These watermarks can then be "read" to validate original content and/or deliver an action, such as delivering content to a mobile phone.
The change to the media are so subtle that Digimarc digital watermarks are considered imperceptible. To help illustrate the impact of a digital watermark, here is a comparison of an original image, a digitally watermarked image, and the result of an image calculation done through a Digimarc-enabled application. The image calculation allows you to see the changes to the image caused by embedding the digital watermark. The calculation is created by subtracting the original image from the watermarked image; the result is then exaggerated for illustration purposes.
Steganography & Digital Watermarking
Steganography (literally "covered writing") is a technique designed to secure a message for transit by hiding that message within another object so that the message is concealed to everyone but the intended recipient. Read More >>
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