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.

Identyfikatory

DOI

10.5277/oa170206

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

optical encryption; diffractive imaging; fully phase; phase retrieval algorithm

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2017
• Tom: Vol. 47, nr 2
• Strony: 233--243
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Wang Z.

• College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China

autor

Zhang Y.

• College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China

autor

Gong Q.

• College of Mechanical and Electrical Engineering, Nanyang Normal University, Nanyang 473061, China

autor

Li S.

• College of Mechanical and Electrical Engineering, Nanyang Normal University, Nanyang 473061, China

autor

Qin Y.

• College of Mechanical and Electrical Engineering, Nanyang Normal University, Nanyang 473061, China

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).