基于直方图对的无损数据隐藏在指纹图像中的应用  

Application of lossless data hiding in figure image based on histogram shifting

作　　者：刘凤梅[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计算机系,上海200092

出　　处：《计算机工程与设计》2008年第20期5155-5158,共4页Computer Engineering and Design

摘　　要：指纹识别技术是最早的通过计算机实现的身份识别手段,在今天也是应用最为广泛的生物特征识别技术,但是该识别技术仅针对指纹图像本身。研究了在确保指纹图像不变的情况下隐藏信息,从而来提高识别的正确率。主要讲述了指纹图像(JPEG)的无损数据隐藏,采用的方法是直方图对,该方法的核心是构造直方图对从而嵌入信息。实验结果表明,该方法对指纹图像的纹理特征破坏小,嵌入后的图像的视觉失真也较小,图像质量较高,几乎不影响指纹图像的识别,同时可以把嵌入的信息和指纹识别结合起来从而提高身份认证的效率。Figure recognition technology is the old identity recognition method by computer, it is also the most popular technology of biology character recognition. But these recognition technologies just aim at figure image, so how to protect figure image and improve the ratio of recognition, it is the purpose. The lossless data hiding for figure image （JPEG） is mainly presented by using the method of histogram pairs. The main points of the method are to construct histogram pairs to hide data. The experimental results show that the method has no destroy for the texture characteristic of figure image. Meanwhile, it has no effect for figure recognition, The visual distortion of embedded image is very small and the quality of the embedded image is very high.

关 键 词：指纹图像 JPEG 无损数据隐藏 直方图对 数字水印 信息隐藏 

分 类 号：TP309[自动化与计算机技术—计算机系统结构] TP309.7[自动化与计算机技术—计算机科学与技术]