J
Joséph John O'Ruanaidh
Researcher at University of Geneva
Publications - 11
Citations - 1574
Joséph John O'Ruanaidh is an academic researcher from University of Geneva. The author has contributed to research in topics: Digital watermarking & Watermark. The author has an hindex of 7, co-authored 11 publications receiving 1559 citations.
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Journal ArticleDOI
Rotation, scale and translation invariant spread spectrum digital image watermarking
TL;DR: In this paper, a Fourier-Mellin-based approach is used to construct watermarks which are designed to be unaffected by any combination of rotation and scale transformations, and a novel method of CDMA spread spectrum encoding is introduced which allows one to embed watermark messages of arbitrary length and which need only a secret key for decoding.
Proceedings ArticleDOI
Rotation, scale and translation invariant digital image watermarking
TL;DR: It is proposed that Fourier-Mellin transform-based invariants can be used for digital image watermarking and may be designed to be unaffected by any combination of rotation, scale and translation transformations.
Proceedings ArticleDOI
Robust 3D DFT Video Watermarking
TL;DR: The method presented here is based on the discrete Fourier transform of three dimensional chunks of video scene, in contrast with previous works on video watermarking where each video frame was marked separately, or where only intra-frame or motion compensation parameters were marked in MPEG compressed videos.
Proceedings ArticleDOI
A secure robust digital image watermark
TL;DR: A new approach for the secure and robust copyright protection of digital images by using a perceptually adaptive spread spectrum communications approach, in which a spread spectrum signal is embedded in selected components of the magnitude spectrum of the image.
Proceedings ArticleDOI
Secure robust digital watermarking using the lapped orthogonal transform
TL;DR: In this article, the authors proposed a new approach based on Lapped Orthogonal Transforms (LOT) in which the watermark is inserted adaptively into the LOT domain.