Fragile watermarking using the VW2D watermark

  title={Fragile watermarking using the VW2D watermark},
  author={Raymond B. Wolfgang and Edward J. Delp},
  booktitle={Security and Watermarking of Multimedia Contents},
Two classes of digital watermarks have been developed to protect the copyright ownership of dig ital ima es. Robust watermarks are designed to withstand attacks on an image (such as compression or scaling), while fragile watermarks are designed to detect minute changes in an image. Fragile marks can also identify where an image has been altered. This paper compares two fragile watermarks. The first method uses a hash function to obtain a digest of the image. An altered or f orged version of the… CONTINUE READING
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