应用科学学报 ›› 2014, Vol. 32 ›› Issue (1): 65-73.doi: 10.3969/j.issn.0255-8297.2014.01.011

• 信号与信息处理 • 上一篇    下一篇

结合嵌入式小波零树编码和喷泉码的图像自嵌入

廖纯, 钱振兴, 倪婧, 王朔中   

  1. 上海大学通信与信息工程学院
  • 收稿日期:2013-09-30 修回日期:2013-12-12 出版日期:2014-01-31 发布日期:2013-12-12
  • 作者简介:钱振兴,副研究员,研究方向:信息隐藏、多媒体信息安全, E-mail:zxqian@shu.edu.cn
  • 基金资助:

    国家自然科学基金(No. 61103181,No. 61071187);上海市自然科学基金(No. 11ZR1413200)资助

Image Self-Embedding Based on EZW Coding and Fountain Codes

LIAO Chun, QIAN Zhen-xing, NI Jing, WANG Shuo-zhong   

  1. School of Communication and Information Engineering, Shanghai University, shanghai 200444, China
  • Received:2013-09-30 Revised:2013-12-12 Online:2014-01-31 Published:2013-12-12

摘要: 利用嵌入式小波零树对小波变换系数进行编码生成参考数据,采用喷泉码对参考数据进一步编码,并将编码数据与认证数据嵌入到原始图像中. 在接收端,通过提取认证数据确定图像中的篡改位置,再从未被篡改区域提取参考数据,经喷泉码解码后重构被篡改区域的内容. 与基于分块离散余弦变换的参考数据生成方法相比,所提出的方法克服了恢复图像中的块效应. 该方法可实现动态的数据嵌入与图像恢复,通过参数选择可实现恢复面积与恢复质量的平衡.

关键词: 信息隐藏, 自嵌入, 图像认证, 图像恢复

Abstract: We first utilize EZW to encode the wavelet coefficients of the image, and then the fountain encoding to generate the reference data. By extracting forensic data and reference data which is self-embedded into the image, tampered area is detected and reference data is also reconstructed. Comparing to block-based DCT,we overcome the blocking artifact of the recovered image. Besides this, we propose a method which makes the data embedding and image quality dynamic by adjusting the parameters. A balance between the recovered area and recovered quality is also achievable.

Key words: information hiding, self-embedding, image authentication, image recovery

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