Szczegóły publikacji
Opis bibliograficzny
Improved reference image encryption methods based on $2^{K}$ correction in the integer wavelet domain / Turker Tuncer, Sengul Dogan, Ryszard TADEUSIEWICZ, Paweł Pławiak // International Journal of Applied Mathematics and Computer Science ; ISSN 1641-876X. — 2019 — vol. 29 no. 4, s. 817–829. — Bibliogr. s. 827–829
Autorzy (4)
- Tuncer Turker
- Dogan Sengul
- AGHTadeusiewicz Ryszard
- Pławiak Paweł
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 127200 |
|---|---|
| Data dodania do BaDAP | 2020-01-30 |
| Tekst źródłowy | URL |
| DOI | 10.2478/amcs-2019-0060 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | International Journal of Applied Mathematics and Computer Science |
Abstract
Many visually meaningful image encryption (VMIE) methods have been proposed in the literature using reference encryption. However, the most important problems of these methods are low visual quality and blindness. Owing to the low visual quality, the pre-encrypted image can be analyzed simply from the reference image and, in order to decrypt nonblind methods, users should use original reference images. In this paper, two novel reference image encryption methods based on the integer DWT (discrete wavelet transform) using 2(k) correction are proposed. These methods are blind and have high visual quality, as well as short execution times. The main aim of the proposed methods is to solve the problem of the three VMIE methods existing in the literature. The proposed methods mainly consist of the integer DWT, pre-encrypted image embedding by kLSBs (k least significant bits) and 2(k) correction. In the decryption phase, the integer DWT and pre-encrypted image extraction with the mod operator are used. Peak signal-to-noise ratio (PSNR) measures the performances of the proposed methods. Experimental results clearly illustrate that the proposed methods improve the visual quality of the reference image encryption methods. Overall, 2(k) correction and kLSBs provide high visual quality and blindness.
