Robust Watermarking with Adaptive Receiving

This paper presents a watermarking scheme with enhanced robustness owing to adaptive receiving and turbo code in addition to other measures. We embed a training sequence with informative watermark in the original image. A new adaptive receiver is developed, which is adjusted adaptively according to the responsive distribution of the training sequence. Together with carefully designed data embedding techniques, concatenated coding of direct sequence spread spectrum (DSSS) and Turbo code, 2-D interleaving, our newly developed resynchronization technique and incorporated with the registration technique based on motion estimation technique developed by Loo and Kinsbury, our proposed algorithm can successfully resist almost all the StirMark testing functions including both common signal processing, such as JPEG compression and median filtering, and geometric distortions. The watermarking is robust against the combination of geometric distortion and JPEG_10, the combination of large global distortion and arbitrary local small distortion. To our best knowledge, we use adaptive receiving to combat the fading of host media feature (watermark carrier) for the first time.