Results 261 to 270 of about 21,589 (305)

Curvelet Transform for Image Authentication

2006
In this paper, we propose a new image authentication algorithm using curvelet transform. In our algorithm, we apply ridgelet transform to each block which is subbanded from the image after wavelet transform. Experimental results demonstrate this algorithm has good property to localize tampering, and robust to JPEG ...
Jianping Shi, Zhengjun Zhai
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Authentication and Protection for Medical Image

2010
This paper proposes a method to authenticate and protect medical images, especially in the region of interest (ROI). The ROI of a medical image is an important area during diagnosis and must not be distorted during transmission and storage in the hospital information system.
Chih-Hung Lin, Ching-Yu Yang, Chia-Wei Chang   +2 more
openaire   +1 more source

Image Authentication for Permissible Cropping

2019
In a digital society, it is not easy to achieve a balance between privacy and authentication. Privacy requires some modifications of the original image and signed data, but image authentication needs to ensure its integrity as much as possible. The most common method of privacy protecting is deleting some sensitive data in the original data.
Haixia Chen, Shangpeng Wang, Hongyan Zhang, Wei Wu 0001   +3 more
openaire   +1 more source

Visual Image Authentication

AHFE International, 2022
Malware plays a critical role in breaching computer systems. Cybersecurity research has primarily focused on malware detection. Detection methods are currently up against fundamental limits in theoretical computer science. The purpose of visual image authentication is to create Artificial Intelligence (AI) problems that are easy for humans to ...
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Image Secret Sharing in Stego-Images with Authentication

2013
Recently, a polynomial-based (t,n) image sharing and hiding schemes with authentication was proposed to hid n shares of a secret image into n ordinary cover images and form n stego-images that can be transmitted securely. But each stego-image of all existing method should be expanded to 4 times of the secret image.
Amitava Nag, Sushanta Biswas, Debasree Sarkar, Partha Pratim Sarkar   +3 more
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User Authentication Based on JPEG2000 Images

2006
The problem of user authentication is particularly interesting for increasing information security on Internet based application. The more used authentication systems are based on alphanumeric passwords and their main weak point is the difficulty to remember them.
M. T. CARTA, B. PODDA, PERRA, CRISTIAN
openaire   +2 more sources

Authenticity and copyright verification of printed images

Signal Processing, 2018
Abstract Perceptual image hashing and digital watermarking are two of the extensively investigated techniques for content authentication and copyright verification of digital images, respectively. One of the significant challenges of perceptual image hashing is a better tradeoff between robustness and discrimination.
Fawad Ahmad 0003, Lee-Ming Cheng
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Watermarking for Image Authentication

2015
Digital multimedia has become a ubiquitous part of the modern life with the rapid advancement of network communications systems. Digital multimedia content, in the form of images, audios, and videos, is widely used in electronic commerce, national security, forensics, networked communications, social networking websites, and other fields.
Chen Ling, Obaid Ur-Rehman
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Personal authentication using hand images

Pattern Recognition Letters, 2006
This paper presents a new approach for personal authentication using hand images. The proposed method attempts to improve the performance of palmprint-based verification system by integrating hand geometry features. Unlike prior bimodal biometric systems, the users do not have to undergo the inconvenience of using two different sensors in our system ...
Ajay Kumar 0001, David C. M. Wong, Helen C. Shen, Anil K. Jain 0001   +3 more
openaire   +2 more sources

Intelligent Machine Learning in Image Authentication

Journal of Signal Processing Systems, 2013
Image authentication techniques have recently gained great attention due to its importance for a large number of multimedia applications. Digital images are increasingly transmitted over non-secure channels such as the Internet. Therefore, military, medical and quality control images must be protected against attempts to manipulate them; such ...
Lamiaa M. El Bakrawy, Neveen I. Ghali, Aboul Ella Hassanien   +2 more
openaire   +1 more source