首页> 外文期刊>International journal of digital crime and forensics >Reversible Fragile Watermarking for Locating Tampered Polylines/Polygons in 2D Vector Maps
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Reversible Fragile Watermarking for Locating Tampered Polylines/Polygons in 2D Vector Maps

机译:可逆脆弱水印技术,用于定位2D矢量地图中的篡改折线/多边形

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摘要

For 2D vector maps, obtaining high tamper localization accuracy without requiring extra space is a technically challenging problem. Using an adaptive group division approach and an improved reversible data hiding approach, the author proposes a reversible fragile watermarking method for locating tampered Polylines/Polygons in 2D vector maps. In particular, the author adaptively divide the features of the vector map into groups according to a predefined threshold, calculate an authentication watermark for each group, embed the watermark using the improved reversible data hiding approach, and hide the mark of each feature into the feature itself. Since the adaptive group division method and the improved reversible data hiding method are combined in an attempt to make full use of the watermark embedding space, superior tamper localization accuracy and original content recovery can be ensured. Besides, no extra space is required by hiding the mark of each feature. Experimental results have been provided to demonstrate the effectiveness of our method.
机译:对于2D矢量地图,在不需要额外空间的情况下获得较高的篡改定位精度是一项技术难题。通过使用自适应组划分方法和改进的可逆数据隐藏方法,作者提出了一种可逆的脆弱水印方法,用于在2D矢量地图中定位篡改的折线/多边形。特别是,作者根据预定义的阈值将矢量地图的特征自适应地分为几组,为每组计算一个认证水印,使用改进的可逆数据隐藏方法将水印嵌入,并将每个特征的标记隐藏到特征中本身。由于将自适应分组分割方法和改进的可逆数据隐藏方法结合在一起以尝试充分利用水印嵌入空间,因此可以确保出色的篡改定位精度和原始内容恢复。此外,通过隐藏每个功能的标记,不需要额外的空间。提供了实验结果以证明我们方法的有效性。

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