带纹理的三维地形数据信息隐藏技术研究

Three-Dimensional Landform Data with Texture Information Hiding Technique

提出了纹理图像隐藏高程信息来保护三维地形数据的信息隐藏技术 在保持地形形状和起伏特征的前提下,实现了高程数据的极低比特率压缩提出可嵌入隐藏信息的小波系数集合生成方法,应用基于视觉系统小波域量化噪声的视觉权重分析方法,自适应地确定信息嵌入的强度应用Rabin方法生成单向Hash函数。

In this paper, a method of information hiding technology is introduced for protecting 3-D landform data where the information of elevation is hidden in the texture. Keeping the terrain figure and hypsography, the terrain information is compressed in low bit ratio. We present a method to build the wavelet coefficient set which can embed hidden information. The strength of the embedding data is image-adaptive according to the wavelet quantization noise, with the maximum strength of just noticeable distortion tolerance of human visual system. We construct Hash one-way by the Rabin method, and the arithmetic can be fully open to the public.