一种基于叠加嵌入机制的矢量地理数据多重数字水印算法研究  

Research on a Multiple Digital Watermarking Algorithm for Vector Geographic Data Based on Superposition Embedding Mechanism

作　　者：王莹莹 杨忠 WANG Ying-ying;YANG Zhong(Jinling Institute of Technology,Nanjing 211169,China)

机构地区：[1]金陵科技学院智能科学与控制工程学院,江苏南京211169

出　　处：《金陵科技学院学报》2022年第2期45-52,共8页Journal of Jinling Institute of Technology

基　　金：国家自然科学基金青年项目(42101428);江苏省高校自然科学研究面上项目(20KJD170002);金陵科技学院博士科研启动基金项目(jit-b-201913);金陵科技学院科研基金孵化项目(jit-fhxm-201905)。

摘　　要：在矢量地理数据跟踪过程中,多重数字水印技术能够提供有效的保护。提出了一种基于叠加嵌入机制的矢量地理数据多重数字水印算法。水印嵌入时,随机选取一定数量的矢量地理数据点,利用加性法则,在这些数据点中依次叠加嵌入多个水印信息;水印检测时,提取载体中的水印信息,并将其与原始水印信息逐一进行相关检测,进而根据所提出的水印检测模型来判断载体数据中含有的水印信息情况。最后,对算法的鲁棒性和小数据矢量地理数据的适应性进行了实验分析。实验结果表明:算法可以在矢量地理数据中嵌入多个水印信息,对于常见的数据裁剪、随机删点、随机增点、要素删除和数据压缩均具有较好的鲁棒性;同时,该算法在小数据矢量地理数据方面也具有较好的适应性。In the process of vector geographic data tracking, multiple digital watermarking technology can provide effective protection. A multiple digital watermarking algorithm for vector geographic data based on superposition embedding mechanism is proposed. In the step of watermark embedding, a certain number of coordinate points are randomly selected, and multiple watermarks are superposed in these points in turn according to the additive rule. In the step of watermark detection, the watermarks in the carried data are extracted and the extracted watermarks are relatively detected with the original watermarks one by one. Then the watermarks contained in the carried data are judged according to the proposed watermark detection model. Finally, the robustness of the algorithm and the adaptability of vector geographic data with small data size are experimentally analyzed. The experimental results show that the algorithm can embed multiple watermarks in vector geographic data, and it has good robustness to data clipping, random deletion, random addition, feature deletion and data compression. At the same time, the algorithm also has good adaptability in vector geographic data with small data size.

关 键 词：多重数字水印 矢量地理数据 叠加机制 加性法则 

分 类 号：TN319.41[电子电信—物理电子学]