Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Antonis Mairgiotis"'
Publikováno v:
PCS
The adoption of a Natural Scene Statistics (NSS) model has been an important research direction in the selection of perceptual features capable of giving satisfactory results in the problem of image quality assessment (IQA). In this work, trying to i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73d375381352090d26e050aa85739a1a
https://doi.org/10.1109/pcs50896.2021.9477453
https://doi.org/10.1109/pcs50896.2021.9477453
Publikováno v:
ICIP
In this work, we investigate an asymptotically optimal blind zero-bit watermark detector in the wavelet domain. More specifically, assuming that the marginal distribution of detail coefficients is non-Gaussian, we model it with the Student's t probab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77919b4a46f6a50ebce91af133afabb9
https://doi.org/10.1109/icip.2018.8451705
https://doi.org/10.1109/icip.2018.8451705
Publikováno v:
ICASSP
In this work, we consider contourlet based image decomposition as a convenient framework for localized representation of images simultaneously in space, frequency (scale) and orientation. Since the subband marginal distributions of natural images in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c274969da88a3451f165e5ba5814ae95
https://doi.org/10.1109/icassp.2018.8461625
https://doi.org/10.1109/icassp.2018.8461625
Publikováno v:
PCI
In this work, we propose a transform based blind zero-bit watermark detector, designed based on a hierarchical, two-level image prior. This model is applied through Rao hypothesis test, where we detect the hidden information with unknown amplitude. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f24127d0f3481304f5450b6c4971143
https://doi.org/10.1145/3139367.3139444
https://doi.org/10.1145/3139367.3139444
Publikováno v:
ICIP
In this work, which addresses issues related to the efficient hiding of watermark information in the transform domain, we propose to model the transform coefficients with the Student-t distribution through the multiplicative rule of embedding. Based
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50407491ac754f6db69b34e0697ceeeb
https://doi.org/10.1109/icip.2017.8296335
https://doi.org/10.1109/icip.2017.8296335
Publikováno v:
IEEE Transactions on Information Forensics and Security. 3:29-37
In this paper, we propose a new family of watermark detectors for additive watermarks in digital images. These detectors are based on a recently proposed hierarchical, two-level image model, which was found to be beneficial for image recovery problem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7ec504a632cd113869df61cdd4e28ab
https://doi.org/10.1109/tifs.2007.916290
https://doi.org/10.1109/tifs.2007.916290
Autor:
D.E. Ventzas, Antonis Mairgiotis
Publikováno v:
2015 23rd Telecommunications Forum Telfor (TELFOR).
With the advance of digital communications the distribution of video content has become common place. In this framework digital video watermarking can be a promising solution in a digital rights management system. H.264/AVC is a state of the art vide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b41d07a2e850d19bf148e1474098f2b3
https://doi.org/10.1109/telfor.2015.7377588
https://doi.org/10.1109/telfor.2015.7377588
Autor:
D.E. Ventzas, Antonis Mairgiotis
Publikováno v:
2nd IET International Conference on Intelligent Signal Processing 2015 (ISP).
With the advance of digital communications the distribution of video content has become common place. In this framework digital video watermarking can be a promising solution in a digital rights management system. H.264/AVC is a state of the art vide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58398a8177f815eeb7e42fa51d6ffe0d
https://doi.org/10.1049/cp.2015.1785
https://doi.org/10.1049/cp.2015.1785
Autor:
D.E. Ventzas, Antonis Mairgiotis
Publikováno v:
2013 21st Telecommunications Forum Telfor (TELFOR).
In this work, we propose a hybrid domain approach for traffic video data protection. More specifically, using a hierarchical Bayesian model, we propose a new watermarking scheme for copyright protection as well as proof of ownership for video traffic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5e6d64b0cc7aaee405caf49a538f3ce
https://doi.org/10.1109/telfor.2013.6716335
https://doi.org/10.1109/telfor.2013.6716335
Publikováno v:
DSP
This work presents a new locally optimal blind detector for the additive transform-based image watermarking problem. Working in non-Gaussian environments, we introduce a new statistical model and its consequent application in the design of a locally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e01a505ab6e1e3633f780ab6b924cfcc
https://doi.org/10.1109/icdsp.2013.6622794
https://doi.org/10.1109/icdsp.2013.6622794