IRIW: image retrieval based image watermarking for large-scale image databases
IWDW'11 Proceedings of the 10th international conference on Digital-Forensics and Watermarking
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Watermark is a new effective digital copyright protection method and data security technology. A new scheme of image retrieval based upon digital watermarking has been proposed. First, embeds the binary watermark information in carried image, computes the value of NC（normalizedcorrelation coefficient）between query watermark and extracted watermark,and gains the retrieval results. The watermarking algorithm is carried out inDCT (discrete cosine transform) domain, and extracting process isinstantaneous and blind. The experimental results show that this method cannot only protect the copyright reliably, but also realize image retrievaleffectively.