Digital watermarking has been considered as an important technique to protect the copyright of digital content. For a digital watermarking method to be effective, it is essential that a watermark embedded in a still or moving image resists against various attacks ranging from compression, filtering to cropping. As JPEG is a dominant still image compression standard for Internet applications, di...

Identification of the source that has generated a digital content is considered one of the main open issues in multimedia forensics community. The extraction of photo-response non-uniformity (PRNU) noise has been so far indicated as a mean to identify sensor fingerprint. Such a fingerprint can be estimated from multiple images taken by the same camera by means of a de-noising filtering operatio...

Introduction The recording of electroencephalogram (EEG) inside the MR scanner has gained increasing interest, particularly in the field of functional MRl (fMRI) [ 1,2]. EEG recording during fMRI can impair the image quality due to magnetic susceptibility of the EEG electrode assemblies and electromagnetic noise from the EEGrecording equipment. We therefore investigated (1) local signal drop ou...

The principle of magnetic holograms and its application to holographic memory are reviewed. A hologram was recorded through a thermomagnetic recording as difference in magnetization direction reconstructed with the magneto-optical effect. To achieve bright reconstruction image, it is important record deep fringes on materials large Faraday rotation coefficients. This technique applied using tra...