Multiple-description coding for robust image watermarking

If we treated image watermarking as a communication problem using the image as the communication channel, applying error-correcting codes (ECC) to the watermarking system should increase the robustness significantly and there has been a lot of works done in this direction. For fading channels, using diversity or signal repetition could be more effective than other ECC methods. However, twice the signal repetition needed twice the bandwidth which can be excessive because the available bandwidth in watermarking was usually small. Multiple-description coding was a mean of trading off between transmission bandwidth and bit error rate. Thereby, we could increase diversity without increasing as much bandwidth as signal repetition. In this paper, we proposed a new image watermarking method using multiple-description coding to increase robustness. Since traditional multiple-description coding was considered in on-off channels where channels were not marred by bit errors but occasional connect...

• Type: Conference
• Year: 2004
• Where: ICIP
• Authors: Ying-Fen Hsia, Chen-Yao Chang, Jay-Ray Liao
• Keywords: ICIP 2004, Image Processing, Image Watermarking Method, Multiple-description Coding, Noisy Channels, On-off Channels, Signal Repetition