A Robust Triple Digital Watermarking Algorithm Based on Image Blocking

摘要

In this paper, the host image is partitioned into blocks according to the size of watermarking to be embedded. One-bit watermarking data is triple-embedded then in each block by proper algorithms, i.e., SVD (Singular value decomposition) domain embedding, DWT (Discrete Wavelet Transform) domain embedding, and random-pixel embedding. Chaotic system is involved in the embedding procedures, which improves the security of proposed algorithm further. The triple-embedded watermarking can be obliviously extracted in parallel and is robust against several attacks, such as JPEG compression, noise attack, cutting attack, etc.