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A difference matching technique for data embedment based on absolute moment block truncation coding

机译:基于绝对时刻块截断编码的数据嵌入差异匹配技术

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摘要

In this paper, an optimized data embedding method based on Huang et al.'s work for absolute moment block truncation coding (AMBTC) is proposed. Huang et al.'s work successfully exploits the difference of quantization levels (QLs) for data embedment and has an excellent embedding performance. However, the modified QLs are not adjusted to minimize the distortion. In some rare cases, they might exceed the grayscale range. Moreover, the order of QLs in smooth blocks is not utilized for data embedment, losing the chance to embed one additional bit without deteriorating the image block. We propose a method to give analytical solutions to adjust QLs such that the distortions in both smooth and complex blocks are minimized. A subtle mechanism is also provided to ensure that no QLs will overflow or underflow. Moreover, the order of QLs is utilized in data embedment to further increase the payload without sacrificing the image quality. The experimental results reveal that the proposed method offers a better image quality over Huang et al.'s and other state-of-the-art works while providing a comparable or larger payload.
机译:在本文中,提出了一种基于Huang等人的优化数据嵌入方法。提出了绝对时刻块截断编码(AMBTC)的工作。 Huang等人。的工作成功利用了数据嵌入量的量化级别(QLS)的差异,并具有出色的嵌入性能。但是,未调整修改的QL以最小化失真。在一些罕见的情况下,它们可能超过灰度范围。此外,QLS在平滑块中的顺序不用于数据嵌入,失去机会嵌入一个附加位而不会恶化图像块。我们提出了一种方法来提供分析解决方案来调整QL,使得光滑和复杂块中的失真最小化。还提供了一种微妙的机制,以确保没有QLS将溢出或下溢。此外,QLS的顺序用于数据嵌入中,以进一步增加有效载荷而不会牺牲图像质量。实验结果表明,该方法提供了优质的图像质量,而不是Huang等人。和其他最先进的工作,同时提供了可比或更大的有效载荷。

著录项

  • 来源
    《Multimedia Tools and Applications》 |2019年第10期|13987-14006|共20页
  • 作者单位

    Sun Yat Sen Univ Sch Elect & Comp Engn Nanfang Coll Guangzhou Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Elect & Comp Engn Nanfang Coll Guangzhou Guangdong Peoples R China;

    Guangdong Univ Technol Sch Informat Engn Guangzhou Guangdong Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    AMBTC; Data embedding; Difference matching;

    机译:AMBTC;数据嵌入;差异匹配;

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