34 research outputs found
Análise de Fourier e Wavelets aplicada à temperatura do ar em diferentes tipologias de ocupação
Radar detection with the Neyman–Pearson criterion using supervised-learning-machines trained with the cross-entropy error
Watermarking is Not Cryptography
Abstract. A number of analogies to cryptographic concepts have been made about watermarking. In this paper, we argue that these analogies are misleading or incorrect, and highlight several analogies to support our argument. We believe that the fundamental role of watermarking is the reliable embedding and detection of information and should therefore be considered a form of communications. We note that the fields of communications and cryptography are quite distinct and while communications systems often combine technologies from the two fields, a layered architecture is applied that requires no knowledge of the layers above. We discuss how this layered approach can be applied to watermarking applications.
The distribution of electric conductivity on the eastern border of the West African craton (Republic of Niger)
Watermarking Security: a Survey
Watermarking security has emerged in the last years as as a new subject in the watermarking area. As it brings new challenges to the design of watermarking systems, a good understanding of the problem is fundamental. This paper is intended to clarify the concepts related to watermarking security, provide an exhaustive literature overview, and serve as a starting point for newcomers interested in carrying out research on this topic