Journal of Applied Sciences ›› 2022, Vol. 40 ›› Issue (3): 457-469.doi: 10.3969/j.issn.0255-8297.2022.03.009

• Signal and Information Processing • Previous Articles     Next Articles

Reversible Data Hiding in Encrypted Image Using Parametric Binary Tree Labeling

QIU Yingqiang1, CHEN Xin1, YANG Yuyan1, ZENG Huanqiang1, QIAN Zhenxing2   

  1. 1. College of Information Science and Engineering, Huaqiao University, Xiamen 361021, Fujian, China;
    2. School of Computer Science, Fudan University, Shanghai 200433, China
  • Received:2020-12-17 Published:2022-05-25

Abstract: To achieve high embedding capacity, an improved reversible data hiding method based on parametric binary tree labeling is proposed for encrypted images. The proposed method includes the following three independent stages:image owner, data hider and authorized receivers. In the first stage, image owner encrypts the original image in a special way of modulating randomly and scrambling image blocks but reserving the pixels' correlation within image blocks. After the encrypted image is uploaded onto cloud servers, data hider first chooses a reference pixel of each image block by adoptive way, and predicts the rest pixels according to the correlation information. Then the data hider can embed large amounts of additional data into the encrypted image by using parametric binary tree labeling in the second stage. In the last stage, authorized receivers can extract the embedded data, or recover the original image losslessly. Experimental results show that the improved method can not only achieve high embedding capacity, but also be applicable in medical, cloud services, military and other fields.

Key words: reversible data hiding (RDH), encrypted image, binary tree labeling, embedding capacity

CLC Number: