论文标题
隐藏在JPEG图像中的基于代码映射的可逆数据的新框架
New Framework for Code-Mapping-based Reversible Data Hiding in JPEG Images
论文作者
论文摘要
代码映射（CM）是JPEG图像中可逆数据隐藏（RDH）的有效技术，该技术通过在JPEG BITSTREAM中构造使用的和未使用的代码之间的映射关系来嵌入数据。这项研究提出了设计基于CM的RDH方法的新框架。首先，提出了一种新的代码映射策略来抑制文件大小扩展并提高适用性。根据我们提出的策略，通过创建新的Huffman表，而不是从原始Huffman表中的未使用的代码中选择它们，从而重新定义了映射的代码。设计基于CM的RDH方法的关键问题，即构建代码映射，转换为组合优化问题。这项研究提出了一种基于CM的新型RDH方法，该方法利用遗传算法（GA）。实验结果表明，所提出的方法在抑制文件大小扩展的同时，没有信号失真，实现了高嵌入能力。
Code mapping (CM) is an efficient technique for reversible data hiding (RDH) in JPEG images, which embeds data by constructing a mapping relationship between the used and unused codes in the JPEG bitstream. This study presents a new framework for designing a CM-based RDH method. First, a new code mapping strategy is proposed to suppress file size expansion and improve applicability. Based on our proposed strategy, the mapped codes are redefined by creating a new Huffman table rather than selecting them from the unused codes in the original Huffman table. The critical issue of designing the CM-based RDH method, that is, constructing code mapping, is converted into a combinatorial optimization problem. This study proposes a novel CM-based RDH method that utilizes a genetic algorithm (GA). The experimental results demonstrate that the proposed method achieves a high embedding capacity with no signal distortion while suppressing file size expansion.
