摘要
提出了一种子离散小波变换域实现图象水印的方法。其优点是良好的稳健性和层次性的检测方法。这种算法充分利用小波变换的特点 ,把原始图象和水印分解成多频段的图象来嵌入水印。检测时 ,把加了水印的图象塔式分解 。
This paper presents an image watermarking technology based on disperse wavelet transform.Its exam technique has the advantages of steadiness and layeredness,and the operation law makes full use of the characteristics of wavelet transform.The original images and watermarks are transformed into a multi-frequent image to be embedded in watermark.Being measured,it is subject to pyramidal multiresolution decomposition and as a result,all the related information can be obtained.
出处
《贵州工业大学学报（自然科学版）》
CAS
2001年第2期22-26,共5页
Journal of Guizhou University of Technology(Natural Science Edition)
关键词
图象水印
DWT
离散小波变换
图象处理
版权保护
image watermarking
disperse wavelet transform
image manipulation
copyright pretecting
