Copyright protection on the web: a hybrid digital video watermarking scheme
Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters
Image copyright protection with forward error correction
Expert Systems with Applications: An International Journal
NPT based video watermarking with non-overlapping block matching
Transactions on computational science XI
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We present a variant to the DCT-based block algorithm proposed in [2] for signal embedding in digital images. Instead of inter-block relations, our algorithm uses intrablock relations to generate the watermarked image. We describe the algorithm and its performance against translation and cropping. The features of our method are : (1) the watermark is perceptually invisible; (2) few loss of relevant information of original image; (3) the watermark can be retrieved by using a secret key; and (4) the watermark is robust against translation and area cropping.