一种抗压缩的等高线数据盲水印算法 |
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引用本文: | 牛莉婷,王明孝,曾端阳,高晨,黄定军. 一种抗压缩的等高线数据盲水印算法[J]. 测绘与空间地理信息, 2013, 0(12): 31-33 |
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作者姓名: | 牛莉婷 王明孝 曾端阳 高晨 黄定军 |
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作者单位: | [1]兰州交通大学测绘与地理信息学院,甘肃兰州730070 [2]68029部队,甘肃兰州730020 |
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基金项目: | 国家科技支撑计划项目“数字流域关键技术”(2013BAB05801)资助 |
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摘 要: | 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。
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关 键 词: | 等高线数据 抗压缩 盲水印 |
A Blind Watermarking Algorithm of Anti- Compression for Contour Data |
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Affiliation: | NIU Li- ting , WANG Ming - xiao , ZENG Duan -yang , GAO Chen , HUANG Ding- jun (1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China; 2.68029 Troops, Lanzhou 730020, China) |
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Abstract: | 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. |
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Keywords: | contour data anti - compression blind watermarking |
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