Energy-efficient data gathering in multi-hop wireless sensor networks was studied,considering that different node produces different amounts of data in realisti
We present a novel quantization-based digital audio watermarking scheme in wavelet domain. By quantizing a host audios wavelet coefficients (Integer Lifting Wav
A geometrical transformations resistant digital image watermarking based on quantization is described. Taking advantage of the rotation, scale and translation i
The difficulty of extracting hidden information,which is essentially a kind of secrecy, is analyzed by information-theoretic method. The relations between key r