Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain
We have carried out a study of optical image encryption in the Fresnel transform (FrT) domain, using a random phase mask (RPM) in the input plane and a phase mask based on devil’s vortex toroidal lens (DVTL) in the frequency plane. The original images are recovered from their corresponding encrypted...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2015/926135 |
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| author | Hukum Singh A. K. Yadav Sunanda Vashisth Kehar Singh |
| author_facet | Hukum Singh A. K. Yadav Sunanda Vashisth Kehar Singh |
| author_sort | Hukum Singh |
| collection | DOAJ |
| description | We have carried out a study of optical image encryption in the Fresnel transform (FrT) domain, using a random phase mask (RPM) in the input plane and a phase mask based on devil’s vortex toroidal lens (DVTL) in the frequency plane. The original images are recovered from their corresponding encrypted images by using the correct parameters of the FrT and the parameters of DVTL. The use of a DVTL-based structured mask enhances security by increasing the key space for encryption and also aids in overcoming the problem of axis alignment associated with an optical setup. The proposed encryption scheme is a lensless optical system and its digital implementation has been performed using MATLAB 7.6.0 (R2008a). The scheme has been validated for a grayscale and a binary image. The efficacy of the proposed scheme is verified by computing mean-squared-error (MSE) between the recovered and the original images. We have also investigated the scheme’s sensitivity to the encryption parameters and examined its robustness against occlusion and noise attacks. |
| format | Article |
| id | doaj-art-ee1c6ebd62c7472081308cb4b4d4f787 |
| institution | Kabale University |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-ee1c6ebd62c7472081308cb4b4d4f7872025-02-03T01:20:24ZengWileyInternational Journal of Optics1687-93841687-93922015-01-01201510.1155/2015/926135926135Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform DomainHukum Singh0A. K. Yadav1Sunanda Vashisth2Kehar Singh3Department of Applied Sciences, The Northcap University, Sector 23-A, Gurgaon 122 017, IndiaDepartment of Applied Sciences, The Northcap University, Sector 23-A, Gurgaon 122 017, IndiaDepartment of Applied Sciences, The Northcap University, Sector 23-A, Gurgaon 122 017, IndiaDepartment of Applied Sciences, The Northcap University, Sector 23-A, Gurgaon 122 017, IndiaWe have carried out a study of optical image encryption in the Fresnel transform (FrT) domain, using a random phase mask (RPM) in the input plane and a phase mask based on devil’s vortex toroidal lens (DVTL) in the frequency plane. The original images are recovered from their corresponding encrypted images by using the correct parameters of the FrT and the parameters of DVTL. The use of a DVTL-based structured mask enhances security by increasing the key space for encryption and also aids in overcoming the problem of axis alignment associated with an optical setup. The proposed encryption scheme is a lensless optical system and its digital implementation has been performed using MATLAB 7.6.0 (R2008a). The scheme has been validated for a grayscale and a binary image. The efficacy of the proposed scheme is verified by computing mean-squared-error (MSE) between the recovered and the original images. We have also investigated the scheme’s sensitivity to the encryption parameters and examined its robustness against occlusion and noise attacks.http://dx.doi.org/10.1155/2015/926135 |
| spellingShingle | Hukum Singh A. K. Yadav Sunanda Vashisth Kehar Singh Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain International Journal of Optics |
| title | Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain |
| title_full | Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain |
| title_fullStr | Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain |
| title_full_unstemmed | Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain |
| title_short | Optical Image Encryption Using Devil’s Vortex Toroidal Lens in the Fresnel Transform Domain |
| title_sort | optical image encryption using devil s vortex toroidal lens in the fresnel transform domain |
| url | http://dx.doi.org/10.1155/2015/926135 |
| work_keys_str_mv | AT hukumsingh opticalimageencryptionusingdevilsvortextoroidallensinthefresneltransformdomain AT akyadav opticalimageencryptionusingdevilsvortextoroidallensinthefresneltransformdomain AT sunandavashisth opticalimageencryptionusingdevilsvortextoroidallensinthefresneltransformdomain AT keharsingh opticalimageencryptionusingdevilsvortextoroidallensinthefresneltransformdomain |