中文摘要：

提出了一种新的数字矢量地图信息隐藏方案。该方案通过建立动态编码压缩表缩减水印编码长度，达到提高水印容量的目的；同时将数字水印压缩码嵌入到地图属性文件的对象定义块内的冗余空间中，由于压缩信息都存储在结束符之后，使得任何地图编辑及浏览软件都无法阅读或显示嵌入冗余空间的水印信息。实验结果表明该隐藏方案鲁棒性强，具有突出的不可感知性，方案对地理精度零损伤，可抵抗剪切、旋转、投影等多种几何攻击。

英文摘要：

A novel scheme for hiding vector map information is presented. The scheme uses the method of dynamic coding compression to reduce watermarks to achieve a large watermark capacity, and embeds watermarks into object definition blocks in the attribute file for a vector map. So it is ensured that the watermarks would never be read and displayed when the map is edited or browsed by any tool software because there are many free spaces in the blocks, followed the concrete object definitions. The experimental results show that the scheme has the features of outstanding imperceptibility and zero loss on accuracy, especially, it can strongly resist various geometric attacks such as croooing, rotation and oroiection, etc.