摘要： An image adaptive digital watermarking algorithm based on discrete wavelet transform(DWT) is proposed.With wavelet transform,the image is decomposed into subband coefficients corresponding to different spatial position and frequency,among which a tree str

关键词: 图像水印算法 图像压缩 小波变换 自适应数字水印 图像处理 版权保护 多媒体