article · IEEE Access
A method for encrypting colour images uses double random phase encoding applied to distinct image blocks. The process begins by segmenting a colour image into equal-sized blocks before an optical emitter converts them into optical signals. Encryption takes place through double random phase encoding, which applies phase modulation across both time and Fourier domains. Following the encryption stage, a charge-coupled device digital camera captures the resulting optical cipher image and converts it back into a digital format. Experimental testing and security analysis indicate that this block-based optical colour encryption approach is secure and effective. Furthermore, increasing the block size provides robust performance alongside good immunity against channel noise during transmission.
Transmitting digital colour imagery across open communication channels creates vulnerability to interception and noise corruption. Optical encryption offers a distinct approach to securing sensitive visual data by combining optical hardware with mathematical phase modulation. This system demonstrates how block-based processing can safeguard colour images while preserving data integrity in noisy transmission environments.
This technology addresses secure image transmission and storage, which could interest developers of optical communication systems, secure hardware platforms, and digital surveillance equipment. Because the work is validated through laboratory experiments and security evaluations using an optical emitter and a charge-coupled device camera, it remains at an applied research stage requiring further engineering before integration into commercial optical encryption products.
AI-generated from the published abstract. Always read the original work before citing.
This paper investigates and presents a block-based opto-color cipher using double random phase encoding (DRPE) with different block sizes. The color plainimage is divided into equal-sized blocks and then converted to an optical signal by an optical emitter. The obtained optical signal is encrypted by employing the DRPE technique, which applies two types of phase modulation, time, and Fourier domains. Finally, the optical color cipherimage is, upon detection, converted to digital format by a charge-coupled device digital camera. Experiments and security analysis show that the proposed block-based optical color image cipher using DRPE with increased block size is secure, effective, and including a good immunity to channel noise.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1109/access.2018.2879857
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
