一种抗压缩的等高线数据盲水印算法

A Blind Watermarking Algorithm of Anti-Compression for Contour Data

根据等高线数据的特点,提出了一种抗压缩的等高线数据盲水印算法。首先采用逐点前进法对等高线数据进行数据压缩,提取特征点,然后基于量化思想将水印信息嵌入在特征点的小数部分。实验结果表明,该算法具有较好的抗压缩效果。

According to characteristics of contour data, a blind watermark algorithm of anti - compression for contour data is proposed. First, contour lines are compressed; then the watermarking is embedded in the decimal parts of the coordinates of the compressed ver- tex data. The experiments conducted on watermarking with different compression degrees show that the algorithm is robust.