Quantization index modulation based watermarking using holography

Okman O. E., Akar G. B.

Conference on Mathematics of Data/Image Pattern Recognition, Compression and Encryption with Application IX, California, United States Of America, 15 - 16 August 2006, vol.6315 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 6315
  • Doi Number: 10.1117/12.680022
  • City: California
  • Country: United States Of America
  • Middle East Technical University Affiliated: Yes


In this paper, we propose a blind watermarking method where watermark is chosen as the hologram of the signal to be embedded. In the proposed approach the quantized phase of the hologram is embedded into an image using quantization index modulation (QIM). The robustness of the proposed technique is tested against several attacks such as filtering, compression, occlusion and cropping. Also the effects of quantization of the hologram on the reconstruction quality are demonstrated.