A Review of Digital Watermarking

This paper reviews a number of aspects of Digital Watermarking. Watermarking can be applied to many digital documents to protect against copyright infringements, including image, text and video formats. Image watermarking is commonly applied in the spatial and transform domains to achieve robust protection. Watermarking also has a role in legal aspects where the method can be used in a court of law as evidence of ownership. Malicious attacks are often used to degrade the watermark allowing copies to be distributed without protection. Several new methods are currently being researched to increase the effectiveness of watermarks. Such methods include the use of artificial intelligence and a second generation of benchmark software to check for robustness of watermarks.