ISW
1999
Springer
14 years 3 months ago
1999
Springer
Micropayments are electronic payments of small amount. Given their low value, the cost of the corresponding electronic transactions should also be kept low. Current micropayment sc...
IH
1999
Springer
14 years 3 months ago
1999
Springer
The majority of steganographic utilities for the camouflage of confidential communication suffers from fundamental weaknesses. On the way to more secure steganographic algorithm...
IH
1999
Springer
14 years 3 months ago
1999
Springer
This paper presents a new stochastic approach which can be applied with di erent watermark techniques. The approach is based on the computation of a Noise Visibility Function NVF ...
IH
1999
Springer
14 years 3 months ago
1999
Springer
In this paper, we focus on a step of the watermarking process whose importance has been disregarded so far. In this perspective, we introduce the vector extraction paradigm which i...
IH
1999
Springer
14 years 3 months ago
1999
Springer
Abstract. Traditionally, cryptographic protocols are described as a sequence of steps, in each of which one principal sends a message to another. It is assumed that the fundamental...
IH
1999
Springer
14 years 3 months ago
1999
Springer
Abstract. This paper presents two main results. The first is a new approach to steganography in which data is encoded in correlations among the pixels in an image. Almost all prev...
IH
1999
Springer
14 years 3 months ago
1999
Springer
IH
1999
Springer
14 years 3 months ago
1999
Springer
This paper summarizes considerations and rationales for the design of a watermark detector. In particular, we relate watermark detection to the problem of signal detection in the p...
IH
1999
Springer
14 years 3 months ago
1999
Springer
Abstract. One way to protect a digital product is to embed an author's signature into the object in the form of minute errors. However, this technique cannot be directly appli...
IH
1999
Springer
14 years 3 months ago
1999
Springer
Many techniques for watermarking of digital images have appeared in numerous publications. Most of these techniques are sensitive to cropping and or a ne distortions e.g., rotatio...