discrete convolution

См. также в других словарях:

• Convolution — For the usage in formal language theory, see Convolution (computer science). Convolution of two square pulses: the resulting waveform is a triangular pulse. One of the functions (in this case g) is first reflected about τ = 0 and then offset by t …   Wikipedia

• Discrete-time Fourier transform — In mathematics, the discrete time Fourier transform (DTFT) is one of the specific forms of Fourier analysis. As such, it transforms one function into another, which is called the frequency domain representation, or simply the DTFT , of the… …   Wikipedia

• Convolution for optical broad-beam responses in scattering media — Photon transport theories, such as the Monte Carlo method, are commonly used to model light propagation in tissue. The responses to a pencil beam incident on a scattering medium are referred to as Green’s functions or impulse responses. Photon… …   Wikipedia

• Convolution De Dirichlet — Johann Peter Gustav Lejeune Dirichlet développe son produit en 1937 pour démontrer le théorème de la progression arithmétique. En mathématiques, la convolution de Dirichlet, encore appelée produit de convolution de Dirichlet ou produit de… …   Wikipédia en Français

• Convolution de dirichlet — Johann Peter Gustav Lejeune Dirichlet développe son produit en 1937 pour démontrer le théorème de la progression arithmétique. En mathématiques, la convolution de Dirichlet, encore appelée produit de convolution de Dirichlet ou produit de… …   Wikipédia en Français

• Discrete Fourier transform — Fourier transforms Continuous Fourier transform Fourier series Discrete Fourier transform Discrete time Fourier transform Related transforms In mathematics, the discrete Fourier transform (DFT) is a specific kind of discrete transform, used in… …   Wikipedia

• Discrete Hartley transform — A discrete Hartley transform (DHT) is a Fourier related transform of discrete, periodic data similar to the discrete Fourier transform (DFT), with analogous applications in signal processing and related fields. Its main distinction from the DFT… …   Wikipedia

• Discrete Fourier transform (general) — See also: Fourier transform on finite groups This article is about the discrete Fourier transform (DFT) over any field (including finite fields), commonly called a number theoretic transform (NTT) in the case of finite fields. For specific… …   Wikipedia

• Discrete cosine transform — A discrete cosine transform (DCT) expresses a sequence of finitely many data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy… …   Wikipedia

• Discrete wavelet transform — An example of the 2D discrete wavelet transform that is used in JPEG2000. The original image is high pass filtered, yielding the three large images, each describing local changes in brightness (details) in the original image. It is then low pass… …   Wikipedia

• Convolution de Dirichlet — En mathématiques, la convolution de Dirichlet, encore appelée produit de convolution de Dirichlet ou produit de Dirichlet est une loi de composition interne définie sur l ensemble des fonctions arithmétiques, c est à dire des fonctions définies… …   Wikipédia en Français