论文标题
隐藏在JPEG中的多域可逆数据
Multi-domain Reversible Data Hiding in JPEG
论文作者
论文摘要
作为可逆数据隐藏（RDH）的分支，隐藏在JEPG中的可逆数据尤为重要。由于JPEG图像被广泛使用，因此研究可逆数据隐藏JEPG图像的算法是很重要的。现有的JEPG可逆数据方法可以分为两类，一种基于离散的余弦变换（DCT）系数修改，另一种是基于Huffman Table修改，基于DCT系数修改的方法会导致大量文件扩展和视觉质量标断，而基于entropy编码域修改的方法可能会导致较低的文件扩展，并导致大量文件扩展。为了有效解决这两种方法中的问题，本文提出了基于多域修改的JPEG图像方法中隐藏的可逆数据。在此方法中，秘密数据通过有效载荷分布算法分为两个部分，首先将秘密数据的一部分嵌入到DCT系数域中，然后将其余的秘密数据嵌入到熵编码域中。实验结果表明，与以前的RDH方案相比，大多数带有此方案的JPEG图像文件具有较小的文件大小增加，有效载荷更高。
As a branch of reversible data hiding (RDH), reversible data hiding in JEPG is particularly important. Because JPEG images are widely used, it is great significance to study reversible data hiding algorithm for JEPG images. The existing JEPG reversible data methods can be divided into two categories, one is based on Discrete Cosine Transform (DCT) coefficients modification, the other is based on Huffman table modification, the methods based on DCT coefficient modification result in large file expansion and visual quality distortion, while the methods based on entropy coding domain modification have low capacity and they may lead to large file expansion. In order to effectively solve the problems in these two kinds of methods, this paper proposes a reversible data hiding in JPEG images methods based on multi-domain modification. In this method, the secret data is divided into two parts by payload distribution algorithm, part of the secret data is first embedded in the DCT coefficient domain, and then the remaining secret data is embedded in the entropy coding domain. Experimental results demonstrate that most JPEG image files with this scheme have smaller file size increment and higher payload than previous RDH schemes.
