What's a watermark? How can I put one on my image?
Digimarc's digital watermarking technologies allow users to embed in audio, images, video and printed documents a digital code that is imperceptible during normal use but readable by computers and software. The science of creating these imperceptible codes is known as digital watermarking. Digimarc is a leading owner of intellectual property relating to digital watermarks and a pioneer in the commercial application of this technology.
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 messages by making subtle changes to the data of the original digital content. These changes are so subtle that Digimarc digital watermarks are considered imperceptible.
Digimarc ImageBridge digital watermarking is the industry leading digital watermarking solution that allows digital image owners to place imperceptible codes into their digital images and photographs.
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Everything you want to know about digital watermarking can be found at http://www.digimarc.com/