提出一种基于小波变换与分形编码技 术 相 结 合 的 矢 量 地 图 零 水 印 模 型 通 过 小 波 变

换获得地图的低频系数块 利用分形相似计算获得与该低频系数块匹配的图像子块 将图像子

块通过拼贴生成零水印并提交第三方版权认证机构备案-Proposed based on wavelet transform and fractal coding technology in the rise of a close and operation of map zero water seal of the small wave model change

Change the map for low-frequency coefficients piece of fractal similar to gain and the low frequency coefficients calculated block matching image sub-block son images

Piece of through the collage generation zero watermark and submit third-party authentication institutions copyright record