Based on the difference expansion and difference shifting, a novel reversible watermarking algorithm for digital vector map is proposed.
利用差分平移和差分扩张，提出一种新的应用于数字矢量地图的可逆水印算法。
The experimental results show that the proposed scheme is fast and accurate, and provides a basis for application of multi-layer reversible watermarking.
实验结果表明：该方法速度快、估计精度高，为实际使用直方图平移可逆水印算法提供了一种快速、有效的判决依据。
The experimental results clearly indicate that this scheme is superior to most of the existing reversible watermarking algorithms and can embed large data with low distortion.
实验的结果表明，该算法优于现有的可逆水印算法，并可以在具有较小失真度的情况下嵌入大量的数据。
The experimental results clearly indicate that this scheme is superior to most of the existing reversible watermarking algorithms and can embed large data with low distortion.
实验的结果表明，该算法优于现有的可逆水印算法，并可以在具有较小失真度的情况下嵌入大量的数据。
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