This Roadmap article on digital holography provides an overview of a vast array of research
activities in the field of digital holography. The paper consists of a series of 25 sections from …

Abstract Information security is of great importance in every aspect of life, spawning
numerous modern cryptographic strategies to protect data from stealing and deciphering …

Optical encryption is a promising approach to protecting secret information owing to the
advantages of low-power consumption, parallel, high-speed, and multi-dimensional …

Holography is a powerful tool to record waves without loss of information that has benefited
optical, X-ray and electronic imaging applications by quantifying phase delays induced by …

In recent years, image encryption schemes based on optical methods have been extensively
studied. However, possible optical encryption methods in combination with fractional-order …

Abstract Information security and authentication are important challenges facing society.
Recent attacks by hackers on the databases of large commercial and financial companies …

Conventional optical security devices provide authentication by manipulating a specific
property of light to produce a distinctive optical signature. For instance, microscopic colour …

In this paper we review a number of optical image encryption techniques proposed in the
literature inspired by the architecture of the classic optical Double Random Phase Encoding …

Information security with optical means, such as double random phase encoding, has been
investigated by various researchers. It has been demonstrated that optical technology …

This paper proposes a fast image encryption method using parallel compressive sensing
(PCS), composite chaos and DNA sequence. Firstly, to reduce the amount of information …