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Fast Fourier transform(FFT) in C#

 this program provide a class to calculate fast Fourier transform (FFT) to compute the discrete Fourier transform (DFT) and its inverse....
  Voice        C#     

Stockwell transform

Stockwell transfor or also called S transform. and there is a comparison with the short time transform...
  Matlab        Matlab     

Scale-invariant feature transform

Scale-invariant feature transform (or SIFT) is an algorithm in computer vision to detect and describe local features in images. The algorithm was published by David Lowe in 1999. Applications include object recognition , robotic mapping and navigation, image stitching , 3D modeling , ge...
  Image Processing        C++     

digital wavelet transform

dwt - digitized/discrete wavelet transform for image feature extraction. is a good feature extraction method for audio and 1 D signal too. uploader do not claim any copyright. download and use it on your own risk. digital wavelet transform or DWT is very similar to its countinuous counterpart namely...
  Matlab        Matlab     

imTrans - Homogeneous transformation of an image

IMTRANS - Homogeneous transformation of an image. Applies a geometric transform to an image [newim, newT] = imTrans(im, T, region, sze);...
  Image Processing        Matlab     

Radon transform codes

Radon transform codes and explanations...
  Algorithm        C++     

eye detection using houstransform and wavelet transform

detection of eye using wavelet transform and hough detection algorithm using adaptive processing techniques...
  Matlab        Matlab     

Discrete Cosine transform(DCT/IDCT) in VHDL

the Project aim is to design DCT and IDCT in VHDL. DCT is used in image compression to compress the JPEG image. This file contains DCT and IDCT blocks and top module which integrates two blocks and testbench to test the two modules....
  vhdl      VHDL     

transformation

Transofmation of map sheets. Data load from .txt, then transform map cornes by afine transformation, similarity transformation, polynomial transformation and 5-element afine transformation....
  Matlab        Matlab     

Discrete Cosine transforms for images

A discrete cosine transform (DCT) expresses a finite sequence of 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 compression of audio (e.g. MP3) and images (e.g. JPEG) (where sm...
  Matlab        Matlab     

Gabor Wavelet 2D Gabor Wavelet transform and Inverse transform

This Matlab script/application performs a 2D Gabor Wavelet transform on an arbitrary image, displays the resulting transform, and then performs the inverse transform *slowly* and *sequentially* in animation, so that one can see how the original image is synthesized back by summing many Gabor wave...
  Matlab        Matlab     

FOURIER transformS

2 Dimensional generic Fourier transform % % [ima_out] = fft2(ima_in,direction) % % This function calculates the complex Fourier transform % of the input image ima_in. If direction is set to 1, the direct fft % is performed, otherwise, the inverse one performed. % % ima_in : input image. Can...
  Matlab        Matlab     

Houghtransformation

使用C#实现的图像处理的源代码,主要实现了Hough变换,为学习C#图像处理起到很大的帮助作用,是非常有用的资料。...
  Image Processing        C#     

Biorthogonal Wavelet transforms

MATLAB implementation of nine-sevenths bi-orthogonal Wavelet transform, breaks up an image into the-MATLAB realize 9/7 biorthogonal Wavelet transform in the frequency domain, and the image is decomposed into the frequency domain. Aimed at strengthening the bi-orthogonal Wavelet denoising function...
  Matlab        Matlab     

MATLAB DWT realization of two-dimensional Wavelet transform

MATLAB DWT realization of two-dimensional Wavelet transform...
  Graph      Verilog     

tap changing transformer

%   first_random_30.m %   This script program is a subroutine to be called in the EP % count=1; % kira=1; % FVSI_set=0.6212; % while count <= 100; %   The following program is used to generate 20 random numbers 1 at a time %   Every time a random number is g...
  Matlab        Matlab     

fast fourier transform serving filter design

Fast Fourier transformation is a well-known common method of calculating various practical problems af different kinds. Most commonly it uses calculation complexity reduction by systolic decomposition. The applied sample shows how to design a 60 Hz filter to eliminate the respective freq...
  Algorithm fft        Delphi     

Intensity transformation

You are given an image and you are to do histogram equalization. For this you need transformation that takes input as given image and outputs equalized histogram and hence giving new image....
  Windows        Matlab     

Calculation of the Fractional Fourier transform

The m-file frft.m computes the fast fractional Fourier transform following the algorithm of [1] The m-file frft2.m computes the fast fractional Fourier transform following the algorithm of [5] (see also [6] for details) The m-file frft22d.m computes a 2D transform based on the 1D routin...
  Matlab        Matlab     

2D walsh transform

%======================================================= %FUNCTIONS FOR 2-D SEQUENCY(WALSH),DYADIC(PALEY) AND %NATURAL(HADAMARD)ORDERED FAST WALSH-HADAMARD transform %======================================================= function xx = fwht2d(xx) % The function implement the 2D fast Walsh-Had...
  Matlab        Matlab     

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