Authors: Hyunjun Choi
Addresses: Mokpo National Maritime University, Haeyangdaehak-ro 91, Mokpo-si, Jeonnam, 530-729, Korea
Abstract: This paper proposes a contents security technique for digital holographic display systems. A digital holographic display system assumes that it follows faithfully the current system frame in processes such as image acquisition, processing, transmission, reception and reconstruction to provide 2D or 3D video services. For the image acquisition in this system, RGB and depth cameras are used. An image contents encryption technique, which is executed in the digital holographic display system, is proposed. This technique encrypts only a part of data by performing the frequency transformation of depth-maps and RGB images. In this paper, two applications of the proposed encryption technique are discussed. In the first one, only depth-maps are encrypted and in the second one, depth-maps and RGB image information are encrypted simultaneously. The experiment results reveal that 0.73% of the entire data are encrypted and that the proposed technique can effectively hide the visual information of an original RGB image and depth-map.
Keywords: data protection; image encryption; depth maps; information security; DCT; texture; video content; image security; digital holographic display; image acquisition; RGB images; cryptography; visual information; information hiding; frequency transformation.
International Journal of Information and Computer Security, 2014 Vol.6 No.4, pp.333 - 343
Received: 15 Nov 2013
Accepted: 04 Mar 2014
Published online: 13 Mar 2015 *