Visual Cryptography Scheme With Meaningful Shares Based on QR Codes

Multi-pixel Visual Cryptography for color images with Meaningful Shares

Visual cryptography technique for black and white images (Basic) introduced by Naor and Shamir [1]. Any visual secret information ( pictures, text, etc) is considered as image and encryption is performed using simple algorithm to generate n copies of shares depending on type of access structure schemes[2, 6].The simplest access structure is the 2 out of 2 scheme where the secret image is encryp...

A Novel Visual Secret Sharing Scheme Based on QR Codes

Inthispaper,anovelvisualsecretsharing(VSS)schemeusingQRcodesisinvestigated.Theproposed visualsecretsharingschemebasedonQRcodes(VSSQR)canvisuallyrevealsecretimagebystacking sufficient(shadowimages)sharesaswellasscantheQRcodebyaQRcodereader.OurVSSQR exploitstheerrorcorrectionmechanismintheQRcodestructure,toembedthebitscorresponding ...

A Zero-Watermark Scheme for Identification Photos based on QR Code and Visual Cryptography

This paper proposes a zero-watermark scheme for identification photos based on QR code and visual cryptography. The method makes no changes to original images while embedding the QR code watermark. In order to ensure the security, we use Arnold transformation to scrambling the watermark. In the scheme, we use discrete wavelet transform and matrix norm computing to generate the invariant feature...

Visual Cryptography and Image Watermarking Scheme for Generating Meaningful Information

This paper proposes a visual cryptography and image watermarking scheme for generating meaningful information. In the proposed scheme, the watermark is embedded into the protected image and visual cryptography scheme for generating two meaningful transparencies. The scheme is used to generate two public images and a secret image by using the visual cryptography technique. Then the secret image ...

A Report On Progressive Visual Cryptography with Unexpanded Shares Authors