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Description: Description: Recent studies on Mathematical modeling of visual cortical cells [Kulikowski/Marcelja/Bishop:1982] suggest a tuned band pass filter bank structure. These filters are found to have Gaussian transfer functions in the frequency domain. Thus, taking the Inverse Fourier Transform of this transfer function we get a filter characteristics closely resembling to the Gabor filters. The Gabor filter is basically a Gaussian (with variances sx and sy along x and y-axes respectively) modulated by a complex sinusoid (with centre frequencies U and V along x and y-axes respectively).
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Author: gz |
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Description: 逆短时傅立叶变换源代码.适合于非稳态的时频联合分析,可直接用于MATLAB编程,无解压密码.-inverse Fourier transform source code. Suited to the non-steady-state joint time-frequency analysis can be used directly in MATLAB programming, without extracting passwords.
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Size: 1586 |
Author: 王杜 |
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Description: （1）用MATLAB开发的傅立叶变换以及逆变换的一个例子，测试通过无误。（2）C＋＋编写的傅立叶以及逆傅立叶变换程序源代码，测试通过。-(1) Using MATLAB development of the Fourier transform and inverse transform an example of the test correct. (2) C++ and inverse Fourier Fourier transform source code, test.
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Size: 5120 |
Author: 孙中雨 |
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Description: 逆短时傅立叶变换源代码.适合于非稳态的时频联合分析,可直接用于MATLAB编程,无解压密码.-inverse Fourier transform source code. Suited to the non-steady-state joint time-frequency analysis can be used directly in MATLAB programming, without extracting passwords.
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Size: 1024 |
Author: 王杜 |
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Description: 编写一个程序计算并显示一幅二维图象的Fourier变换（幅度和相位谱）及其逆变换，要求用FFT实现-procedures for the preparation of a calculation and display a two-dimensional image of the Fourier transform (amplitude and phase spectrum) and its inverse transform, called for using the FFT
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Size: 746496 |
Author: 祖超 |
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Description: 1.matlab编程，实现函数的倒排序；
2.程序实现FFT,傅立叶逆变换；
3.一个图像处理程序，添加噪声，去噪。
-1.matlab programming, realize inverted sort function 2. Procedures realize FFT, inverse Fourier transform 3. An image processing program, add noise, de-noising.
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Size: 1024 |
Author: clw |
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Description: This document contains information about frequency domain processing. details about 1-d,2-d fourier transform,inverse fourier transform,image enhancement techniques. contains some sample code and output also
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Size: 2570240 |
Author: deeps |
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Description: 图像处理 直方图 哈夫曼编码 傅立叶变换 傅立叶逆变换 图像增强-Histogram image processing Huffman inverse Fourier transform Fourier transform image enhancement
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Size: 1766400 |
Author: ff |
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Description: delphi fft souce plus example (fast Fourier transform Direct and Inverse)
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Size: 8192 |
Author: sebi3 |
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Description: Fourier变换，逆变换后信号的合成，及Fourier变换的一些性质分析。-Fourier transform, inverse transform signal synthesis, and some properties of Fourier transform analysis.
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Size: 10240 |
Author: |
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Description: A matlab function that calculates the inverse short term Fourier transform with adjustable parameters.
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Size: 1024 |
Author: sam |
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Description: Discrete Fourier transform, DFTshift, Inverse DFT, opencv
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Size: 2048 |
Author: mmia |
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Description: 傅里叶变换及傅里叶逆变换的c++实现，令附有测试数据和实验结果。-Fourier transform and its inverse transform of the c++ implementation, so that with test data and experimental results.
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Size: 9216 |
Author: 张敏 |
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Description: 傅立叶变换是数字信号处理领域一种很重要的算法。傅立叶变换的物理意义是将图像的灰度分布函数变换为图像的频率分布函数，傅立叶逆变换是将图像的频率分布函数变换为灰度分布函数-Fourier transform is the field of digital signal processing a very important algorithms. Fourier transform is the physical meaning of the image gray distribution function transforms the image of the frequency distribution function of inverse Fourier transform is the frequency distribution function of the image transformed to gray-scale distribution function of
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Size: 154624 |
Author: zhengfang |
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Description: Program FFT.FOR
This FORTRAN program calculates the fast Fourier transform of a
timeseries (real and/or complex) or the inverse Fourier transform
of spectral components (real and/or complex). The FFT is based
on the algorithm given in Numerical Recipes, Cambridge University
Press, 1994.-Program FFT.FOR
This FORTRAN program calculates the fast Fourier transform of a
timeseries (real and/or complex) or the inverse Fourier transform
of spectral components (real and/or complex). The FFT is based
on the algorithm given in Numerical Recipes, Cambridge University
Press, 1994.
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Size: 71680 |
Author: 梦回 |
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Description: 程序基于CVI来编写，可实现对二维图像的傅里叶正反变换和反变换。-Program is based on CVI to write, can realize the positive and negative two-dimensional image of the Fourier transform and inverse transform.
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Size: 73728 |
Author: 瑾瑜 |
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Description: 二维傅里叶变换,对图像进行二维傅里叶变换处理-Two-Dimensional Fast Fourier Transform
The purpose of this project is to develop a 2-D FFT program "package" that will be used
in several other projects that follow. Your implementation must have the capabilities to:
(a) Multiply the input image by (-1)x+y to center the transform for filtering.
(b) Multiply the resulting (complex) array by a real function (in the sense that the
the real coefficients multiply both the real and imaginary parts of the transforms).
Recall that multiplication of two images is done on pairs of corresponding elements.
(c) Compute the inverse Fourier transform.
(d) Multiply the result by (-1)x+y and take the real part.
(e) Compute the spectrum.
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Size: 1024 |
Author: solo |
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Description: A fast Fourier transform (FFT) is an efficient algorithm to compute the discrete Fourier transform (DFT) and its inverse
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Size: 1607680 |
Author: dizel |
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Description: 2维图像的傅里叶变换和反变换，讨论了相位和幅值对图像的不同影响。-Two-dimensional image of the Fourier transform and inverse Fourier transform, discussed the different effects of the phase and amplitude to images.
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Size: 473088 |
Author: chenqw |
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Description: 这主要用于图形处理的二维频谱的处理，二维傅里叶以及二维傅里叶逆变换-This is mainly used for the processing of two-dimensional graphics processing spectrum, two-dimensional and two-dimensional Fourier inverse Fourier transform
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Size: 6144 |
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