A major concern for creators of digital content, whether it's Web content, music, or movies on digital disc, is to protect their work from unauthorised copying and distribution. DataHiding is a technology that allows owners of content to embed data invisibly or inaudibly into other digital media, such as video, audio data, or still images. When the data is embedded, it is not written as part of the data header, but rather embedded directly into the digital media itself. This process changes the original digital data, but the change is so slight that it cannot be visually detected, and has no impact on the performance of the original data.
The beauty of DataHiding is that it gives content creators a powerful means of marking their digital creations without affecting the end user's appreciation of it. The embedded information does not change the size of the original data, and it survives normal image processes such as compression and format transformation
