Results 21 to 30 of about 841,423 (159)

Attack-defending contrastive learning for volumetric medical image zero-watermarking

open access: yes
Zero-watermarking is an emerging distortion-free copyright protection method for volumetric medical images. However, achieving both robustness against various malicious attacks and distinguishability between individual images remains challenging. In this
Hui Fang (6064121)   +7 more
core   +5 more sources

Digital watermarking scheme exploiting non-deterministic dependence for image authentication [PDF]

open access: yes, 2006
Watermarking schemes for authentication purposes are characterized by three factors: security, resolution of tamper localization, and embedding distortion.
Yuan, Yinyin, Li, Chang-Tsun
core   +1 more source

Robust Video Watermarking Scheme Based on QDCT Global Equalization Strategy [PDF]

open access: yesJisuanji kexue, 2023
As a promising technology of copyright protection,video watermarking has attracted more and more attention in recent years.Different from the original domain scheme,the compressed domain scheme does not need to fully encode and decode video,so it has ...
TAO Xinyu, XIONG Lizhi, ZHANG Xiang
doaj   +1 more source

Reversible watermarking scheme with image-independent embedding capacity [PDF]

open access: yes, 2005
Permanent distortion is one of the main drawbacks of all the irreversible watermarking schemes. Attempts to recover the original signal after the signal passing the authentication process are being made starting just a few years ago. Some common problems,
C.-T. Li, Li, Chang-Tsun
core   +1 more source

Watermarking for multimedia security using complex wavelets [PDF]

open access: yes, 2010
This paper investigates the application of complex wavelet transforms to the field of digital data hiding. Complex wavelets offer improved directional selectivity and shift invariance over their discretely sampled counterparts allowing for better ...
Bouridane, A.   +10 more
core   +1 more source

A New Zero-Watermarking Algorithm Resisting Attacks Based on Differences Hashing

open access: yesCybernetics and Information Technologies, 2016
Medical volume data containing patient information is often faced with various attacks in the transmission process. In order to enhance the medical information system security, and effectively solve the problem of medical volume data protection, a new ...
Han Baoru, Li Jingbing
doaj   +1 more source

A Hybrid Transforms-Based Robust Video Zero-Watermarking Algorithm for Resisting High Efficiency Video Coding Compression

open access: yesIEEE Access, 2019
With the rampancy of pirated videos, video watermarking for copyright protection has become a widely researched topic. In this paper, zero-watermarking is applied to videos for the first time to resist high efficiency video coding compression, which can ...
Xiaoyan Yu, Chengyou Wang, Xiao Zhou
doaj   +1 more source

Wavelet-based fragile watermarking scheme for image authentication [PDF]

open access: yes, 2007
We propose a fragile watermarking scheme in the wavelet transform domain that is sensitive to all kinds of manipulations and has the ability to localize the tampered regions.
Si, Huayin, Li, Chang-Tsun
core   +1 more source

Dual Zero-Watermarking Scheme for Two-Dimensional Vector Map Based on Delaunay Triangle Mesh and Singular Value Decomposition

open access: yesApplied Sciences, 2019
Digital watermarking is important for the copyright protection of electronic data, but embedding watermarks into vector maps could easily lead to changes in map precision.
Xu Xi   +4 more
doaj   +1 more source

A novel zero-watermarking scheme based on NSCT-SVD and blockchain for video copyright

open access: yesEURASIP Journal on Wireless Communications and Networking, 2022
With the advent of information era, the issues on video copyright continue to emerge. In the grey industrial chain of piracy, the film industry is suffering a major disaster area.
Xiangqi Wu   +5 more
doaj   +1 more source

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