面向纹理特征的图像置乱程度的衡量方法  

Evaluation method of image scrambling degree based on texture feature

作　　者：綦科[1,2] 张大方[1] 谢冬青[2] 

机构地区：[1]湖南大学计算机通信学院,长沙410082 [2]广州大学计算机科学与教育软件学院,广州510006

出　　处：《计算机工程与应用》2010年第8期174-176,共3页Computer Engineering and Applications

基　　金：广东省自然科学基金 Grant No.8151007101000021~~

摘　　要：图像置乱是信息隐藏中最常用的一项技术,其目的是通过将图像的信息次序打乱来提高隐蔽载体的鲁棒性和隐蔽性。如何评价图像置乱的程度,是信息隐藏研究的重点问题之一。利用图像纹理基元行程特征和灰度级的连续概率特征对图像质量的描述方法,提出了基于图像纹理特征的图像置乱程度衡量方法,实验表明,该方法能较好地评价图像的置乱程度,与人的主观视觉评价有较好的一致性。Image scrambling is a common method in information hiding with purpose of improving robustness and imperceptibility of image by scrambling image＇s information order.How to evaluate the image scrambling degree is the important issue of research.This paper describes a new evaluation method of scrambling degree based on the description of image quality which measures the image features of texture primitive scale and continuous probability of gray level.Experimental results show that the proposed method can well evaluate the scrambling degree and is consistent with human subjective vision.

关 键 词：信息隐藏 图像置乱程度 置乱算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]