变换域加密图像数字水印算法研究

本文主要对图像数字水印算法进行了研究，主要利用离散小波变换实现数字水印的嵌

入和提取，这是因为小波变换可以将信号或图像进行多分辨率分解，具有放大、缩小和

平移的数学显微镜功能，利用小波分解的特性可以将水印信息嵌入到载体图像的不同区

域，更好地抵抗各种信号处理操作。-Transform domain encrypted image digital watermarking algorithm of this paper, the image watermarking algorithm using discrete wavelet transform digital watermark embedding and extraction This is because the wavelet transform signal or image multi-resolution decomposition, with zoom out and panning mathematical microscope function, using the characteristics of wavelet decomposition can watermark information is embedded into different regions of the image carrier, a better resistance to a variety of signal processing operation.