Read or Download Attacks on Watermarking Systems PDF
Similar computers books
Studying to take advantage of SAS firm consultant hasn't ever been more straightforward! With The Little SAS e-book for company consultant four. 1, Susan Slaughter and Lora Delwiche assist you fast familiarize yourself with the SAS firm advisor point-and-click surroundings. a sequence of rigorously designed tutorials assist you grasp the fundamentals of the initiatives you might want to do most often.
This booklet exhibits the convention complaints of CloudComp 2009 held in Munich, Germany, in October 2009.
The right kind remedy and selection of the elemental facts constructions is a crucial and intricate half within the technique of software development. Algebraic equipment offer concepts for facts abstraction and the established specification, validation and research of information buildings. This quantity originates from a workshop geared up inside of ESPRIT venture 432 METEOR, An built-in Formal method of business software program improvement, held in Mierlo, The Netherlands, September 1989.
- The Origins of Digital Computers: Selected Papers
- AutoCAD 2005 For Dummers
- Teach Yourself VISUALLY Word 2016
- Shape from positional-contrast
- Delac, Grgic, Bartlett Recent advances in face recognition
- Cooperative Information Agents VIII: 8th International Workshop, CIA 2004, Erfurt, Germany, September 27-29, 2004. Proceedings
Additional resources for Attacks on Watermarking Systems
Usually, one has to balance accuracy against efficiency. The smallest value recommended is k=10. (In fact, one can observe that k=12 has computational advantages). An alternative approach to generating normal variates (known as the direct approach) is the following. Let r1 and r2 be two uniformly distributed independent random numbers. Then 1 2 x1 = (-2 loge r1) cos 2πr2 1 2 x2 = (-2 loge r1) sin 2πr2 are two random variates from the standard normal distribution. This method produces exact results and the speed of calculations compares well with the Central Limit approach subject to the efficiency of the special function subroutines.
However, in most of the cases one will observe that the time a machine is operational varies. Also, the repair time may vary from machine to machine. If we are able to observe the operational times of a machine over a reasonably long period, we will find that they are typically characterized by a theoretical or an empirical probability distribution. Similarly, the repair times can be also characterized by a theoretical or empirical distribution. Therefore, in order to make the simulation model more realistic, one should be able to randomly numbers that follow a given theoretical or empirical distribution.
Rk. Since each ri is a uniformly distributed random number over the interval [0 ,1], we have that a+b 1 E(ri) = 2 = 2 (b-a)2 1 Var(ri) = 12 = 12 . Using the Central Limit theorem, we have that the sum Σri of these k random numbers approaches the normal distribution. That is ⎛k k ⎞ ⎟ , Σri ~ N⎜⎝2 , 12⎠ or Σri - k/2 k/ 12 ~ N(0, 1). 1) Now, let us consider the normal distribution with parameters µ and σ from which we want to generate normal variates. Let x be such a normal variate. Then x-µ σ ~ N(0,1).
Attacks on Watermarking Systems by Setyawan