The basic visual cryptography (VC) model was proposed by Naor and Shamir in 1994. The
secret image is encrypted into pieces, called shares, which can be viewed by collecting and …

Problem: Visual secret sharing is a method used to secure images by converting a secret
image into multiple shares so that the original image cannot be recognized from individual …

With rapid developments in network technology, information security is becoming
increasingly crucial. To ensure that secret images are not being stolen during transmission …

The security of recognized biometric images keeps sensitive data from the vindictive
behavior in transmission. An optional technique to guarantee the secrecy and abnormal …

Multi-level secret image sharing is a scheme combining hierarchical shadows with
progressive reconstruction. But in previous schemes, the generated shadows are divided …

The notion of visual cryptography was introduced without formalisms by Naor and Shamir in
1994. It provides a very powerful technique by which one secret can be distributed into two …

As a classical secret sharing technique,(k, n) threshold secret image sharing mainly contains
the shadow generation phase and the image reconstruction phase. The sensitive secret …

Random grids are a method for visual secret sharing, whereby a secret image is encoded
into a number of shares, each of which is maximally entropic. There has been growing …

Aim: In visual cryptography, a secret image is encrypted into two meaningless random
images called shares. These two shares can be stacked to recover the secret image without …

Visual cryptography is a method used to secure images by converting them into several
shares that are finally stacked to recover the original image without any calculations. Most …