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应用科学学报 >

2014 , Vol. 32 >Issue 2: 178 - 184

DOI: https://doi.org/10.3969/j.issn.0255-8297.2014.02.010

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基于显著性分类的数字图像自嵌入方法

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  • 上海大学通信与信息工程学院，上海200072
钱振兴，副研究员，研究方向：信息隐藏、图像取证与反取证，E-mail: zxqian@shu.edu.cn

收稿日期: 2013-04-03

  修回日期: 2013-04-24

  网络出版日期: 2013-04-24

基金资助

国家自然科学基金(No.61103181, No.61071187)；上海自然科学基金(No.11ZR1413200)；上海市教委创新基金(No.11YZ10)资助

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Self-Embedding Based on Saliency Distribution

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  • School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China

Received date: 2013-04-03

  Revised date: 2013-04-24

  Online published: 2013-04-24

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摘要

数字图像自嵌入与恢复是在图像中嵌入与自身相关的信息，用于接收端判断图像是否被篡改并恢复被篡改区域的内容. 提出一种基于显著性分类的数字图像自嵌入方法，根据图像自身的特点对图像进行分类，动态决定每个区域的参考数据量和嵌入容量，采用喷泉码对参考数据进行编码，并将其嵌入到原图像的不同区域中. 与传统方法相比，所提出的方法主要有以下两点优势：在生成参考数据方面，所提出的方法可根据内容分类确定编码长度，在保证整体恢复质量的同时，能重点保护显著性区域；在数据嵌入方面，选择在不同区域中嵌入不等的数据量，可避免传统均匀嵌入法导致图像伪轮廓等缺陷，保证含密图像具有良好的质量.

关键词： 自嵌入; 自恢复; 信息隐藏; 显著性

本文引用格式

赵丽丽， 钱振兴， 韩喜玉 . 基于显著性分类的数字图像自嵌入方法[J]. 应用科学学报, 2014 , 32(2) : 178 -184 . DOI: 10.3969/j.issn.0255-8297.2014.02.010

Abstract

 The purpose of image self-embedding is to achieve content authentication and self-recovery by imperceptibly embedding relevant information into the host image. This paper proposes a novel self-embedding method based on significance classification. After classifying the image into three kinds of regions dynamically, the code length and embedding capacity of each block are determined. Using fountain coding, the reference information is embedded into the entire image. The proposed method is superior to the traditional methods in two aspects. First, the method assigns different code length to different regions so that the recovery quality for the whole image is good and significant regions can be protected effectively. Second, the method embeds different amounts of data into different regions thus avoiding false contour and ensuring good quality of the stego-image.

Key words： self-embedding; self-recovery; data hiding; significant region

参考文献

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