Authors: Yu Chen; Jiangyi Lin; Chin-Chen Chang; Yu-Chen Hu
Addresses: School of Information Science and Engineering, Fujian University of Technology, 33 Xuefu South Road, Minhou, Fuzhou, 350118, China ' Department of Computer Science, Xiamen University of Technology, 600 Ligong Road, Jimei District, Xiamen, 361024, China; Department of Information Engineering and Computer Science, Feng Chia University, 100 Wenhwa Road, Seatwen, Taichung, 40724, Taiwan ' Department of Information Engineering and Computer Science, Feng Chia University, 100 Wenhwa Road, Seatwen, Taichung, 40724, Taiwan ' Department of Computer Science and Information Management, Providence University, 200, Sec. 7, Taiwan Boulevard, Shalu Dist., Taichung, 43301, Taiwan
Abstract: This paper presents a novel greyscale image reversible data hiding scheme based on exploiting modification direction (EMD) method. In this scheme, two 5-ary secret numbers are embedded into each pixel pair in the cover image according to the EMD method to generate two pairs of stego pixels. Two meaningful shadow images are obtained by shifting the generated corresponding pixel pairs, and the original image and the secret data can be accurately recovered when the two shadow images are operated together. Experimental results show that the proposed scheme has a good performance in the shadow image quality and the image embedding ratio.
Keywords: reversible data hiding; secret image sharing; exploiting modification direction; EMD.
International Journal of Computational Science and Engineering, 2020 Vol.21 No.4, pp.583 - 592
Received: 03 Jan 2019
Accepted: 17 Apr 2019
Published online: 24 Apr 2020 *