计算机应用 ›› 2014, Vol. 34 ›› Issue (10): 2985-2989.DOI: 10.11772/j.issn.1001-9081.2014.10.2985

• 虚拟现实与数字媒体 • 上一篇    下一篇

基于直方图对的MPEG-4格式视频无损数据隐藏

韩一罡1,童学锋1,宣国荣1,曲欣1,施云庆2   

  1. 1. 同济大学 电子与信息工程学院,上海 201804
    2. 新泽西理工学院 电子与计算机工程系,美国 新泽西 07102
  • 收稿日期:2014-04-15 修回日期:2014-06-24 出版日期:2014-10-01 发布日期:2014-10-30
  • 通讯作者: 韩一罡
  • 作者简介:韩一罡(1990-),男,浙江杭州人,硕士研究生,主要研究方向:图像处理、模式识别;
    童学锋(1963-),男,湖北蕲春人,教授,博士,主要研究方向:图像处理、模式识别;
    宣国荣(1935-),男,上海人,教授,博士,主要研究方向:图像处理、模式识别。
  • 基金资助:

    国家自然科学基金资助项目;上海市教委科研创新基金资助项目

Reversible data hiding based on histogram pairs in MPEG-4 video

HAN Yigang1,TONG Xuefeng1,XUAN Guorong1,QU Xin1,SHI Yunqing2   

  1. 1. College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China;
    2. Department of Electrical and Computer Engineering, New Jersey Institute of Technology, New Jersey 07102, USA
  • Received:2014-04-15 Revised:2014-06-24 Online:2014-10-01 Published:2014-10-30
  • Contact: HAN Yigang

摘要:

针对视频中的无损数据隐藏问题,提出了基于直方图对数据嵌入的方法,在I帧的离散余弦变换(DCT)域中,通过选择合理的起伏值、频段和区域来进行数据嵌入,达到了MPEG-4视频高质量的嵌入效果。通过选择在图像空域的最优局部区域的宏块(8×8),在DCT宏块内部最优频率范围内,在最优DCT幅度上嵌入数据,来达到视频的最优直方图对无损嵌入。在6个常用的测试视频序列的实验中,得到比过去方法更高的峰值信噪比(PSNR)。如akiyo视频,I帧嵌入PSNR,分别达到了45.33dB(1000b/帧)、43.58dB(2000b/帧)和40.28dB(4000b/帧)。在大嵌入量的情况下,依旧保持了较低的比特率的增加,平均约6%。在DCT系数上嵌入数据,所提算法比“基于DCT量化表”上嵌入数据得到的PSNR更高。嵌入I帧比嵌入B帧好,形成了比较完备的视频无损数据隐藏方法。

Abstract:

In terms of the issue of reversible data hiding algorithm in videos, a novel algorithm based on histogram-pair method was proposed, which embedded data by selecting reasonable fluctuation value, freguercy range and area in I frames Discrete Cosine Transform (DCT) field, achieved high quality embedded MPEG-4 video. By embedding data in the macroblocks (8×8) in the optimum area, optimum frequency range in the macroblocks, and optimum DCT fluctuation, optimum reversible data hiding was completed. Higher Peak Signal-to-Noise Ratio (PSNR) was achieved in the experiments of 6 sequences videos. For akiyo, the PSNR of embedded I frame reached 45.33dB (1000b/frame),43.58dB (2000b/frame)和40.28dB (4000b/frame)。In the cases of high capacity, the increase of bit rate is relatively low, approximately 6% on average. The proposed method embedded data in DCT coefficient, achieves higher PSNR than the method based on DCT quantization table. The method embedded information in I frame beter than in B frame, which has formed relatively completed reversible data hiding method in video.

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