【摘要】 提出了一个基于小波变换的有意义图像水印算法。该算法在 5 12× 5 12× 8bits图像上嵌入了一个 5 36bits的有意义字符串 ,水印检测时不需要原始图像 ,并借助于模板、登记图像的大小、纠错编码和二维交织技术 ,水印不但可以对抗一般的信号处理 ,还可以抵抗缩放、改变长宽比、伴随着剪裁的旋转和随机去行去列等几何攻击。更多还原

【Abstract】 A watermarking algorithm in DWT domain is proposed. The proposed algorithm hides data as many as 536 bits in 512×512×8 bits images. And no original images are required in watermark signals’ extraction. By means of BCH coding, 2-D interleaving, template, and registration of the width and height of the original image technology, the algorithm is robust against the common signal processing procedures as well as some geometric attacks of StirMark 3.1, such as aspect ratio variation, jitter, rotation, scaling, etc.更多还原