保持几何形状的矢量地图水印算法应用分析

Application and Analysis of Shape-preserving Algorithm for Watermarking 2-D Vector Map Data

不同类型的矢量地图水印嵌入算法对矢量地图几何特征的影响程度不同,导致含水印矢量地图的可用性遭到不同程度的破坏。针对这一问题,实现了一种现有的保持几何形状的矢量地图水印算法,将其应用于某居民地面矢量数据,并提出了几何形状和坐标精度评价方法,对该水印嵌入算法的普适性和有效性进行分析与评价。

Different types of vector map watermark embedding algorithms have different impacts on the geometric characteristics of vector maps,resulting in the usability of watermarked vector maps being damaged to varying degrees.In order to solve this problem,this paper proposed an vector map watermarking algorithm that maintained similar geometric shapes,and applied it to a resident’s ground vector data.A geometric shape and coordinate accuracy evaluation method was introduced to analyze and evaluate the universality and effectiveness of the watermarking algorithm.