On the amount of embedded information of watermarking methods based on the parallel combinatorial spread spectrum scheme
Thr maximum amounts: of embedded information that is important in practical system design of two watermarking methods based on the parallel combinatorial spread spectrum (PC/SS) scheme are discussed in this paper. One is a private watermarking method proposed in this paper and has a practical strong point to make the quality of tile watermarked image to be constant in any images. The other is a public watermarking method that was previously proposed bq the authors. Through this: study, the minimum number of orthogonal sequences for embedding tile required amount of information under the condition that quantization noise is only assumed is found in each watermarking method.
pc/ss digital watermark real-number sequence maximum amount of embedded information