Review of models, issues and applications of digital watermarking based on visual cryptography

Saturwar, Jitendra; Chaudhari, D. N.

doi:10.1109/icisc.2017.8068588

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…The one-time pad is remembered by this method, as each ciphertext page is decoded by using a different transparency. The input image to the VC scheme is the watermark in combined watermarking schemes [31].…”

Section: Watermarking With (22) Vc Schemementioning

confidence: 99%

Video Identification Based on Watermarking Schemes and Visual Cryptography

Wafy¹,

Zanaty²,

El-Khouly³

2022

Computer Systems Science and Engineering

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Related to the growth of data sharing on the Internet and the widespread use of digital media, multimedia security and copyright protection have become of broad interest. Visual cryptography (VC) is a method of sharing a secret image between a group of participants, where certain groups of participants are defined as qualified and may combine their share of the image to obtain the original, and certain other groups are defined as prohibited, and even if they combine knowledge of their parts, they can't obtain any information on the secret image. The visual cryptography is one of the techniques which used to transmit the secrete image under the cover picture. Human vision systems are connected to visual cryptography. The black and white image was originally used as a hidden image. In order to achieve the owner's copy right security based on visual cryptography, a watermarking algorithm is presented. We suggest an approach in this paper to hide multiple images in video by meaningful shares using one binary share. With a common share, which we refer to as a smart key, we can decrypt several images simultaneously. Depending on a given share, the smart key decrypts several hidden images. The smart key is printed on transparency and the shares are involved in video and decryption is performed by physically superimposing the transparency on the video. Using binary, grayscale, and color images, we test the proposed method.

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Section: Watermarking With (22) Vc Schemementioning

confidence: 99%

Video Identification Based on Watermarking Schemes and Visual Cryptography

Wafy¹,

Zanaty²,

El-Khouly³

2022

Computer Systems Science and Engineering

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“…This is an advantage that VC has over conventional cryptographic schemes that are usually conditionally secure. Due to its unique property, VC has various applications that include securing online transactions [86], digital watermarking [99], authentication [21,35,72], copyright protection for digital images, steganography, electronic cash banking applications [84] and many more.…”

Section: Introductionmentioning

confidence: 99%

An overview of visual cryptography techniques

Ibrahim

Teh

Abdullah

2021

Multimed Tools Appl

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Visual cryptography is an encryption technique that decomposes secret images into multiple shares. These shares are digitally or physically overlapped to recover the original image, negating the need for complex mathematical operations or additional hardware. There have been many variations of visual cryptography proposed over the years, each addressing different problems or to fulfill different security requirements. Existing review papers on the area only cover certain types of visual cryptography or lack comparisons between the various schemes. To address this gap, this paper provides broad overview of the area to aid new researchers in identifying research problems or to select suitable visual cryptography methods for their desired applications. For more veteran researchers in the area, our paper provides the most up-to-date coverage of the state-of-the-art. We first provide an introduction to the various categories of visual cryptography techniques, including a discussion on recently proposed schemes. These schemes are then compared in terms of their features, performance metrics, advantages and disadvantages. Compared to prior work, we extend the number of comparison metrics to include signal-to-noise ratio and the type of shares. Over 40 visual cryptography schemes that have been proposed in the past two decades were analyzed and compared. Our findings indicate that existing problems such as pixel expansion, poor quality of recovered image quality, computational and memory complexities still exist, and a optimizing the trade-off between these requirements still requires further investigation. We conclude the paper with a discussion of these open problems and future research directions.

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On the Implementation of a Fragile Medical Image Watermarking Technique Using Saliency and Phase Congruency

Basu¹,

Dutta²

2019

Intelligent Innovations in Multimedia Data Engineering and Management

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The recent developments of enormous computer networks have invoked insecurities related to copyright theft of digital media. To be precise, the virtual sharing of medical images over networks with a novel desire of improved medical diagnosis has led to the tampering of sensitive patient identity information. In this chapter, the authors have exemplified the need of watermarking with fragile medical image watermarking using saliency and phase congruency. Initially, the saliency and phase congruency methodologies are applied on the original medical image to highlight the object features. Based on the feature map, a mask is generated which segregates the area of interest from the portions containing visual medical information. An encrypted text, containing identity of the patient, is embedded into the area of interest of the image. The results of imperceptibility and fragility criteria are satisfactory towards the implementation of a fragile watermark as the extracted watermark is found to be corrupted upon unfaithful image processing modifications.

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Review of models, issues and applications of digital watermarking based on visual cryptography

Cited by 4 publications

References 10 publications

Video Identification Based on Watermarking Schemes and Visual Cryptography

Video Identification Based on Watermarking Schemes and Visual Cryptography

An overview of visual cryptography techniques

On the Implementation of a Fragile Medical Image Watermarking Technique Using Saliency and Phase Congruency

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