Share Email Print

Journal of Electronic Imaging

Quantum signal processing-based visual cryptography with unexpanded shares
Author(s): Surya Sarathi Das; Kaushik Das Sharma; Jayanta K. Chandra; Jitendra Nath Bera
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

This paper proposes a visual cryptography scheme (VCS) based on quantum signal processing (QSP). VCS is an image encryption technique that is very simple in formulation and is secure. In (k,n)-VCS, a secret binary image is encoded into n share images and minimum k shares are needed to decrypt the secret image. The efforts to encrypt a grayscale image are few in number and the majority are related to grayscale to binary conversion. Thus, a generalized approach of encryption for all types of images, i.e., binary, gray, and color is needed. Here, a generic VCS is proposed based on QSP where all types of images can be encrypted without pixel expansion along with a smoothing technique to enhance the quality of the decrypted image. The proposed scheme is tested and compared for benchmark images, and the result shows the effectiveness of the scheme.

Paper Details

Date Published: 15 October 2015
PDF: 18 pages
J. Electron. Imaging. 24(5) 053026 doi: 10.1117/1.JEI.24.5.053026
Published in: Journal of Electronic Imaging Volume 24, Issue 5
Show Author Affiliations
Surya Sarathi Das, Kalyani Government Engineering College (India)
Kaushik Das Sharma, Univ. of Calcutta (India)
Jayanta K. Chandra, Future Institute of Engineering and Management (India)
Jitendra Nath Bera, Univ. of Calcutta (India)

© SPIE. Terms of Use
Back to Top