基于指纹图像特征的无损数据隐藏  

Reversible data hiding based on fingerprint image characteristics

作　　者：张旦[1] 童学锋[1] 宣国荣[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《计算机应用》2008年第10期2683-2685,共3页journal of Computer Applications

摘　　要：提出一种基于指纹图像特征采用直方图对进行数据隐藏的方法,将其用于基于指纹识别和易碎数字水印的银行养老金发放系统。通过分析指纹图像的特征,发现指纹图像直方图在0和255像素有极大值,且和其相近值有极大的落差,采用直方图对方法先压缩0和255邻近值,再嵌入在0和255位置,实验获得较高的峰值信噪比和较高的嵌入量(>5000比特)。A lossless data hiding technique was proposed using histogram pair based on fingerprint characteristics. It was used in an online bank pension distribution system for fingerprint recognition and fragile watermarking. The fingerprint characteristics of mass fingerprint image were analyzed. It was concluded that there was max number in pixel value equal to 0 and 255 from histogram of fingerprint image, and there was maximum fall between 0 or 255 and near pixel value. The values of 0 or 255 and near pixel were compressed, and then hidden data was embedded into 0 or 255. Experiment shows that it can get better Peak Signal-to-Noise Ratio （PSNR） and enough data embedding capacity to normal application （ over 5 000 bits）.

关 键 词：指纹图像 无损数据隐藏 直方图对 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]