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A Visual Cryptography and Statistics Based Method for Ownership Identification of Digital Images

Authors: Ching-Sheng Hsu, Young-Chang Hou


In this paper, a novel copyright protection scheme for digital images based on Visual Cryptography and Statistics is proposed. In our scheme, the theories and properties of sampling distribution of means and visual cryptography are employed to achieve the requirements of robustness and security. Our method does not need to alter the original image and can identify the ownership without resorting to the original image. Besides, our method allows multiple watermarks to be registered for a single host image without causing any damage to other hidden watermarks. Moreover, it is also possible for our scheme to cast a larger watermark into a smaller host image. Finally, experimental results will show the robustness of our scheme against several common attacks.

Keywords: Digital Watermarking, visual cryptography, copyright protection, samplingdistribution

Digital Object Identifier (DOI):

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