- Tytuł:
- Fully-phase optical image encryption in diffractive-imaging scheme with QR-code-based random illumination
- Autorzy:
-
Wang, Z.
Zhang, Y.
Gong, Q.
Li, S.
Qin, Y. - Powiązania:
- https://bibliotekanauki.pl/articles/174126.pdf
- Data publikacji:
- 2017
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
optical encryption
diffractive imaging
fully phase
phase retrieval algorithm - Opis:
- Based on a fully phase encoding and phase retrieval algorithm, a diffractive-imaging-based optical encryption scheme with random illumination is proposed. In the encryption process, a QR code image is placed in the optic path to modulate the incident light and thus generate a random illumination, which has been demonstrated to enable the proposed scheme to resist the multi-slice ptychographic phase retrieval algorithm attack. The plaintext is phase-encoded, and then encrypted by two random phase masks. The diffraction pattern in the output plane is recorded as ciphertext by a CCD camera. For decryption, an iterative phase retrieval algorithm with median filtering operation is implemented. Simulation results demonstrate the effectiveness, security, and robustness of the proposal.
- Źródło:
-
Optica Applicata; 2017, 47, 2; 233-243
0078-5466
1899-7015 - Pojawia się w:
- Optica Applicata
- Dostawca treści:
- Biblioteka Nauki
Artykuł