基于藏传佛教纹饰符号构造纹理的信息隐藏方法

Information Hiding of Textures Based on Tibetan Buddhist Decorative Symbols

利用藏传佛教纹饰符号生成具有藏文化特征纹理的含密纹理图像,进而实现信息隐藏。信息隐藏者首先构造一个包含不同特征的纹饰符号库,对其特征选择或构造特征值进行编码,以实现二进制数据与纹饰符号之间的映射关系;根据秘密信息从纹饰符号库中选择对应的纹饰符号,并确定合适的坐标值进行摆放,对源含密纹理图像进行可逆形变操作,生成初步的含密纹理图像,然后随机选择干扰符号和相近的背景颜色进行填充,最终生成一副藏文化特色的具备良好视觉美学效果的含密纹理图像。信息提取者对生成的含密纹理图像去除背景颜色和干扰符号,然后进行逆变换操作,根据特征解码得到秘密信息。实验证明该方法比其他方法生成类似加密数据的含密纹理图像更具民族特色,因而不易引起攻击者怀疑,视觉上更具隐蔽性。

The use of Tibetan Buddhist decoration symbols to generate a dense texture image with the texture of Tibetan cultural characteristics to hide information.Information hidden first constructs a decorative symbol library that contains different features,and encodes its feature selection or constructive feature value to achieve the mapping relationship between binary data and decorative symbols;select the corresponding decoration from the decorative symbol library according to the secret information from the secret information.Symbols,and determine the appropriate coordinate value to place it,carry out reversible formats for the source of the dense texture,generate a preliminary dense texture image,and then select the interference symbols and similar background colors to fill it,and finally generate a pair of Tibetan culture.Features with a good visual aesthetic image containing texture.The information extractor removes the background color and interference symbols of the generated texture-containing texture,and then the inverter replacement operation is performed,and the secret information is obtained according to the characteristic decoding.Experiments have proved that this method has more national characteristics than other methods to generate a dense texture image similar to encrypted data,so it is not easy to cause the attacker to doubt,and it is more concealed visually.