Efficient image tamper detection and recovery technique using dual watermark

@article{Chaluvadi2009EfficientIT,
  title={Efficient image tamper detection and recovery technique using dual watermark},
  author={Surya Bhagavan Chaluvadi and M. V. N. K. Prasad},
  journal={2009 World Congress on Nature & Biologically Inspired Computing (NaBIC)},
  year={2009},
  pages={993-998}
}
In this paper, we proposed an efficient dual watermark scheme for image tamper detection and recovery. In the proposed watermarking algorithm each block in the image contains watermark of other two blocks, i.e. two copies of watermark of the whole image is maintained and second chance for block recovery is provided in case one copy is destroyed. The algorithm proposed by Lee and Shinfeng [1] is unable to detect the tamper in the watermarked image, if any one bit or more than one bit in 5-MSBs… CONTINUE READING