Devil's Vortex Phase Structure as Frequency Plane Mask for Image Encryption Using the Fractional Mellin Transform. (7th May 2014)

• Record Type: Journal Article
• Authors: Vashisth, Sunanda; Singh, Hukum; Yadav, A. K.; Singh, Kehar
• Other Names: Kivshar Yu S. Academic Editor.
• Is Part Of: International journal of optics. Volume 2014(2014)
• Publication Date: 2014-05-07
• Subjects: Optics -- Periodicals; Optics; Periodicals; 535
• DOI: 10.1155/2014/728056
• Languages: English
• ISSNs: 1687-9392

Abstract

Abstract : A frequency plane phase mask based on Devil's vortex structure has been used for image encryption using the fractional Mellin transform. The phase key for decryption is obtained by an iterative phase retrieval algorithm. The proposed scheme has been validated for grayscale secret target images, by numerical simulation. The efficacy of the scheme has been evaluated by computing mean-squared-error between the secret target image and the decrypted image. Sensitivity analysis of the decryption process to variations in various encryption parameters has been carried out. The proposed encryption scheme has been seen to exhibit reasonable robustness against occlusion attack.