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» On the diagonalization of the discrete Fourier transform
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ICMCS
2005
IEEE
101views Multimedia» more  ICMCS 2005»
15 years 3 months ago
Rotation, scaling, and translation-invariant multi-bit watermarking based on log-polar mapping and discrete Fourier transform
This paper proposes an RST-invariant multi-bit watermarking system based on LPM and DFT. This system embeds the watermark in a rotation and translation invariant domain obtained b...
Wilson W. L. Fung, Akiomi Kunisa
65
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ICASSP
2010
IEEE
14 years 10 months ago
Generalized Discrete Fourier Transform with optimum correlations
— In this paper, we present design methods to optimize nonlinear phase functions of Generalized DFT (GDFT) for minimized auto and cross correlations. It is shown that GDFT offers...
Ali N. Akansu, Handan Agirman-Tosun
48
Voted
ICPR
2010
IEEE
14 years 8 months ago
Reversible Interger 2-D Discrete Fourier Transform by Control Bits
Serkan Dursun, Artyom M. Grigoryan
AAECC
1993
Springer
170views Algorithms» more  AAECC 1993»
15 years 2 months ago
Exponential Sums as Discrete Fourier Transform with Invariant Phase Functions
We give estimates for exponential sums over finite fields in several variables. We study the case where the phase is either quadratic or more generally invariant under the action ...
Gilles Lachaud