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There are many types of digital watermarking algorithms, but each type corresponds with a certain detecting method to detect the watermark. However, the embedding method is usually unknown, so that it is not possible to know whether the hidden information exists or not. An extensive digital watermarking detecting method based on the known template is proposed in this paper. This method extracts some feature parameters form the spatial, DCT and DWT domains of the image and template, and then use some detecting strategies on those parameters to detect the watermark. The experiment result shows that the correct detecting rate is more than 97%. Obviously, the extensive digital watermarking detection method can be realized, and the method is valuable in theory and practice.

An Extensive Method to Detect the Image Digital Watermarking Based on the Known Template