Fourier Transform For Triangular
Fourier Transform Lab Student Edition is an advanced application designed for performing Fourier transformations, which can be useful in teaching Crystallography, since they are related to Optical Transforms (e.g. laser diffraction patterns). Furthermore one may get a quick hands-on experience...
Platforms: Windows
License: Freeware | Size: 6.8 MB | Download (82): Fourier Transform Lab Student Edition Download |
This program is open source code of fast Fourier transform in matlab.Where y is the input argument and p is the normalized size of the input. Lety = [1 2 3 4 ];x= length(y);m= log2(x);p= ceil(m);To call the function useft2(y,p);
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (56): Fast Fourier Transform Algorithm Download |
This demonstration is intended for people who know something about the theory of the discrete Fourier transform, and who would find it helpful to see some its properties demonstrated graphically, using a programming language.The demonstration shows the form of the Fourier components of a signal...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 788.48 KB | Download (47): Fourier transform demonstration Download |
Implementation of Fast Fourier Transform based Homogenization for heterogeneous materials dealing with electric or heat conductiviy. It takes the values of conductivity at regular grid of periodic unit cell that represents the material and produces the distribution of local fields such as...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 399.36 KB | Download (40): Fast Fourier Transform based Homogenization Download |
The Fourier transform takes a signal in the time domain and maps it, without loss of information, into the frequency domain. The frequency domain representation is exactly the same signal, in a different form. The inverse Fourier transform(IDFT) maps the signal back from the frequency domain into...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (55): Inverse Discrete Fourier Transform of a finite sequence Download |
VB Super Fast Fourier Transform ActiveX dll source code. Perform speed optimized DFT and IFT.
Platforms: Windows
License: Commercial | Cost: $10.00 USD | Size: 10 KB | Download (528): VB Fast Fourier Transform source code Download |
Hough transform for circles in any size.returns a list of all circles found(position and radius) in an RGB image.includes function for:drawing a circle on an image.finding the maximum points in a 1d signal.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 71.68 KB | Download (45): Hough transform for circles Download |
This is an implementation of exact geodesic algorithm for triangular mesh (first described by Mitchell, Mount and Papadimitriou in 1987) with some minor improvements, extensions and simplifications. The algorithm has O(n^2 log n) worst-case time complexity, but in practice can work with...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 296.96 KB | Download (43): Exact geodesic for triangular meshes Download |
DFT transforms one function into another, which is called the frequency domain representation, or simply the DFT, of the original function (which is often a function in the time domain). But the DFT requires an input function that is discrete and whose non-zero values have a limited (finite)...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (42): Discrete Fourier Transform of a finite sequence Download |
Wavelet transform for image codingWavelet transform related functions specifically designed to be used as a tool for image/video compression. The core of the toolbox consists of one-dimensional (1D) wavelet analysis and synthesis functions. The separable decomposition of multidimensional signals...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 235.52 KB | Download (44): Wavelet transform for image coding Download |
PDL::FFTW is a PDL interface to the Fastest Fourier Transform in the West v2.x. This is a means to interface PDL with the FFTW library. Its similar to the standard FFT routine but its usually faster and has support for real transforms. It works well for the types of PDLs for which was the...
Platforms: *nix
License: Freeware | Size: 2.1 MB | Download (149): PDL::FFTW Download |
This program calculates the non-destructive zoom Fast Fourier transform of a time history.The input file must be time(sec) and amplitude(units)Reference: Randall, Frequency Analysis, Bruel & Kjaer, page 170.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): zoom FFT Download |
This function returns N point DFT samples of 2dw band of Fourier transform of a sequence. Typically, fft() returns N samples of Fourier transform ranging from 0 to 2pi. This function takes the N-point DFT samples and returns N-point samples corresponding to frequency band wc-dw to wc+dw.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (52): Zoom Spectrum Download |
SPAN is a real-time 'fast Fourier transform' audio spectrum analyzer plug-in for professional music and audio production applications. For the most part it was derived from Voxengo GlissEQ dynamic parametric equalizer and reproduces its spectrum analysis functionality.
SPAN provides you with a...
Platforms: Mac
License: Freeware | Size: 5.8 MB | Download (443): Voxengo Span for Mac OS X Download |
Finding the Fourier transform of a rectangular pulse..filtering the spectrum and regenerating the signal usingthe filtered spectrum is done...at the end Rayleigh theorem is proved by showing that the energy content of both time domain and frequency domain signals are equal..your comments are...
Platforms: Matlab
License: Freeware | Size: 215.04 KB | Download (45): Fourier Analysis of a Rectangular Pulse Download |
This function allows one to calculate the Fourier transform of a chirped function evaluated at specific points using the stationary phase approximation.Imagine a pulse with a large time-bandwidth produce: this would require a large amount of data points in order to evaluate the Fourier transform....
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (45): Stationary phase approximation for performing Fourier Transforms Download |
This is a tidied up version of Adam Wilmer's Fourier-Mellin transform for simple image rotation, scale and translation. No GUI is included and some code is cribbed directly from his implementation. I'm totally new to Matlab, so please excuse any coding faux-pas I have committed here.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 163.84 KB | Download (39): Fourier Mellin Image Registration Download |
Plots the contours of a function defined on an unstructured triangular grid directly, without the need to interpolate back onto a Cartesian array.I have attempted to replicate much of the functionality of the regular "contour" function.Type "help tricontour"Type "contourdemo" for some examplesYou...
Platforms: Matlab
License: Freeware | Size: 348.16 KB | Download (40): Contours for triangular grids Download |
With this Fourier Calculator a periodic signal can be analyzed and represented in figures with harmonics.The signals can easily be produced in the model.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (42): Fourier Calculator for periodic signals Download |
This Hough transform is highly optimized. It uses the midpoint circle algorithm to draw the circles in voting space quickly and without gaps. It also includes an option for searching only part of the image to increase speed if a rough estimate of the circle locations is known.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (44): Hough Transform for circle detection Download |