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IH
2005
Springer
14 years 3 months ago
On the Intractability of Inverting Geometric Distortions in Watermarking Schemes
We examine the problem of watermarking schemes robust against geometric distortions from a complexity theoretic point of view. The main results presented are polynomial time reduct...
Maciej Liskiewicz, Ulrich Wölfel
LICS
2003
IEEE
14 years 3 months ago
Revisiting Digitization, Robustness, and Decidability for Timed Automata
We consider several questions related to the use of digitization techniques for timed automata. These very successful techniques reduce dense-time language inclusion problems to d...
Joël Ouaknine, James Worrell
JOT
2010
167views more  JOT 2010»
13 years 8 months ago
The Discrete Fourier Transform, Part 5: Spectrogram
This paper is part 5 in a series of papers about the Discrete Fourier Transform (DFT) and the Inverse Discrete Fourier Transform (IDFT). The focus of this paper is on the spectrog...
Douglas Lyon
JOT
2010
186views more  JOT 2010»
13 years 8 months ago
The Discrete Fourier Transform, Part 6: Cross-Correlation
This paper is part 6 in a series of papers about the Discrete Fourier Transform (DFT) and the Inverse Discrete Fourier Transform (IDFT). The focus of this paper is on correlation....
Douglas Lyon
ICRA
1998
IEEE
110views Robotics» more  ICRA 1998»
14 years 2 months ago
Generating Robust Trajectories in the Presence of Ordinary and Linear-Self-Motion Singularities
An algorithm is presented which computes feasible manipulator trajectories along fixed paths in the presence of kinematic singularities. The resulting trajectories are close to mi...
John E. Lloyd, Vincent Hayward