Results 1 to 10 of about 168 (83)

Copyright Protection Based on Zero Watermarking and Blockchain for Vector Maps

open access: yesISPRS International Journal of Geo-Information, 2021
Zero watermarking does not alter the original information contained in vector map data and provides perfect imperceptibility. The use of zero watermarking for data copyright protection has become a significant trend in digital watermarking research ...
Na Ren   +4 more
doaj   +3 more sources

A Novel Hybrid Reversible-Zero Watermarking Scheme to Protect Medical Image

open access: yesIEEE Access, 2022
The verification of copyright and authenticity for medical images is critical in telemedical applications. Watermarking is a key technique for protecting medical images and can be mainly divided into three categories: region of interest (ROI) lossless ...
Zhen Dai   +4 more
doaj   +3 more sources

Robust Zero-Watermarking Algorithm for Medical Images Using Double-Tree Complex Wavelet Transform and Hessenberg Decomposition

open access: yesMathematics, 2022
With the rapid development of smart medical care, copyright security for medical images is becoming increasingly important. To improve medical images storage and transmission safety, this paper proposes a robust zero-watermarking algorithm for medical ...
Tongyuan Huang   +3 more
doaj   +3 more sources

Zero Watermarking for the TIN DEM Data Based on the Edge Length

open access: yesISPRS International Journal of Geo-Information, 2021
How to keep the fidelity of the digital elevation model (DEM) data is a crucial problem in the current watermarking research, as the watermarked DEM data need to preserve their accuracy.
Qifei Zhou, Changqing Zhu, Na Ren
doaj   +3 more sources

Homomorphic and Commutative Fragile Zero-watermarking Based on SVD [PDF]

open access: yesJisuanji kexue, 2022
Most of the existing watermarking and encryption schemes are difficult to ensure the commutativity of watermarking and encryption as well as the visual quality of the protected image.These schemes complete watermark embedding and image encryption ...
REN Hua, NIU Shao-zhang, WANG Mao-sen, YUE Zhen, REN Ru-yong
doaj   +1 more source

New Color Image Zero-Watermarking Using Orthogonal Multi-Channel Fractional-Order Legendre-Fourier Moments

open access: yesIEEE Access, 2021
Zero-watermarking methods provide promising solutions and impressive performance for copyright protection of images without changing the original images. In this paper, a novel zero-watermarking method for color images is envisioned.
Khalid M. Hosny   +2 more
doaj   +1 more source

A robust zero-watermarking scheme based on non-negative matrix factorization for audio protection.

open access: yesPLoS ONE, 2022
The copyright problem of digital products is becoming more and more prominent. In this case, digital watermarking technology has attracted the attention of many experts and scholars in the field of information security.
Xing Guo, Daiyu Huang, Longting Xu
doaj   +1 more source

Robust Zero-Watermarking of Color Medical Images Using Multi-Channel Gaussian-Hermite Moments and 1D Chebyshev Chaotic Map

open access: yesSensors, 2022
Copyright protection of medical images is a vital goal in the era of smart healthcare systems. In recent telemedicine applications, medical images are sensed using medical imaging devices and transmitted to remote places for screening by physicians and ...
Doaa Sami Khafaga   +3 more
doaj   +1 more source

Zero-Watermarking for Vector Maps Combining Spatial and Frequency Domain Based on Constrained Delaunay Triangulation Network and Discrete Fourier Transform

open access: yesEntropy, 2023
With its lossless properties, zero-watermarking has attracted a lot of attention in the field of copyright protection for vector maps. However, the common zero-watermarking algorithm puts too much emphasis on mining for global features, making it ...
Xu Xi, Yang Hua, Yi Chen, Qiande Zhu
doaj   +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

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