Reversible Data Embedding and Scrambling Method Based on JPEG Images

摘要

With the continuous development of Internet technology, a joint method of data embedding and scrambling has become a new research trend. As the most frequently used image in our daily life, JPEG is applied in many ways. In this paper, we present a new reversible data embedding and scrambling scheme based on JPEG images. We use the histogram shifting method to embed the secret data for the AC coefficients after decoding the JPEG image. And for the DC coefficients, we apply the re-encoding method to embed the data, and then scramble the DCT blocks of the JPEG image. The experimental results show that we can easily achieve high embedding capacity and scrambling effect by using the proposed scheme. At the same time, the original image can be perfectly reconstructed after the secret data extraction.