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Description: This document introduces the techniques of fast Fourier transform and gives a source code in C for computing 2D FFT on image data.
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Size: 31491 |
Author: 冰城 |
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Description: 图象FFT——1D变换，快速变换针对2D图象-FFT image -- Transform 1D, 2D against rapidly changing images
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Size: 941 |
Author: 刘曦 |
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Description: 基2基4的2d、3d的fft快速算法，代码写的很规范，效率很高。
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Size: 61413 |
Author: 张强 |
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Description: Pass the Images Through Optics -- Use a Gaussian "Aperture Function"
This code segement can use a measured aperture function just as easily - simply replace the next five lines by "load measured_aperture" where measured_aperture is the measured function strored in ASCII and the data stored in the file measured_aperture.mat is a MATLAB .mat file that contains the matrix apfunction. (in MATLAB type "help load" for how to use load and look at the c and fortran code that shows how to read and write MATLAB .mat files).
(Note: When the Point Spread Function is Gaussian, then so is the Aperture function)
To simulate the effect of the tracker optics, each of the movie frames is now blurred using a 2-D FFT (Fast Fourier Transform). The first frame of the resulting image is shown in Figure 1.
- Pass the Images Through Optics -- Use a Gaussian "Aperture Function"
This code segement can use a measured aperture function just as easily - simply replace the next five lines by "load measured_aperture" where measured_aperture is the measured function strored in ASCII and the data stored in the file measured_aperture.mat is a MATLAB .mat file that contains the matrix apfunction. (in MATLAB type "help load" for how to use load and look at the c and fortran code that shows how to read and write MATLAB .mat files).
(Note: When the Point Spread Function is Gaussian, then so is the Aperture function)
To simulate the effect of the tracker optics, each of the movie frames is now blurred using a 2-D FFT (Fast Fourier Transform). The first frame of the resulting image is shown in Figure 1.
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Size: 1024 |
Author: sabah_altaie |
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Description: This example will demonstrate the use of the FFT function to calculate\na 2D-FFT. Given that the data represents the width and the delay of two\nsignals this program calculates the 2D-FFT and displays the result on an\nintensity graph. Note that the results are Nyquist shifted so that low\nfrequencies appear in the center-This example will demonstrate the use of the FFT function to calculate\na 2D-FFT. Given that the data represents the width and the delay of two\nsignals this program calculates the 2D-FFT and displays the result on an\nintensity graph. Note that the results are Nyquist shifted so that low\nfrequencies appear in the center
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Size: 8192 |
Author: jar |
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Description: 自己編寫的matlab代碼，實現fft函數及ifft函數功能-I have written matlab code to achieve the original fft function and the ifft function
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Size: 1024 |
Author: Sherry |
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Description: VC++写的傅里叶变换，1D和2D的都有。-1DFFT 2DFFT
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Size: 2048 |
Author: 糖糖 |
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Description: 2D图像处理的快速傅里叶变换，输入输出接口便捷-2D image processing, fast Fourier transform, and convenient input and output interfaces
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Size: 54272 |
Author: 王伟 |
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Description: 一种声源多维定位MUSIC算法
宽带信号通过FFT转换为窄带信号，在通过普通的窄带处理求出信号的方位信息。
注：这里的信号是wav格式的音频信号
程序还没有实现加权谱空间
QQ：2395558091 资料共享哦！-Source 2D positioning music algorithm
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Size: 1024 |
Author: 王刚 |
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Description: Efficient 1d and 2d FFT algorithm in C
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Size: 2048 |
Author: 8-bit |
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Description: 实现2D—fft的matlab程序
以二维时间序列为基-Achieve 2D-fft matlab program
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Size: 1024 |
Author: 木木 |
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Description: 基于matlab的数字图像的二维傅立叶变换(FFT)以及二维离散余弦DCT变换，提供里详细代码，.m文件-Matlab-based digital image two-dimensional Fourier transform (FFT) and two-dimensional discrete cosine transform DCT offers in detailed code,. M file
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Size: 326656 |
Author: valeriechan |
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Description: 一维和二维阵列天线FFT分析，对不同间距的均匀阵列做了详细处理-1D and 2D array antenna analysis with FFT, and dealt with different inter-element distance.
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Size: 2048 |
Author: 从此走 |
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Description: 对yuv图片求fft和ifft变换，文件里包含测试图片，yuvviewer，以及测试图片的fft变换和ifft反变换的图片做完参考-fft and ifft transform of yuv pictures
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Size: 440320 |
Author: 陈 |
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Description: 构造一个线性调频信号作为差频信号进行2D FFT处理
-create a LSM signal.
make 2D FFT of the signal above
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Size: 1024 |
Author: 梁 |
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Description: the matlab code attached show how to Display magnitude and phase of 2D FFTs, invers FFT and switch magnitude and phase of 2D FFTs
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Size: 939008 |
Author: Run |
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Description: FFT算法实现,从txt文件中导入数据进行FFT，并且把需要的频谱图叠加画出二维三维图-FFT algorithm, import data txt file FFT is performed, and the required spectrum superposition shown in Fig. 2D and 3D
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Size: 4096 |
Author: anin |
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Description: 对数字图像进行傅里叶变换，查看其频谱图及相位图。(Fourier transform of digital images, to see its spectrum and phase diagram.)
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Size: 27648 |
Author: 闪电侠333
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Description: 用FEKO仿真，获得FFE文件，放到文件夹下，修改相应参数，即可成像
基本的2D IFFT成像算法(The FFE file is obtained by FEKO simulation. It is placed in the folder and the corresponding parameters are modified. Then the image can be imaged.
Basic 2D IFFT Imaging Algorithms)
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Size: 51200 |
Author: Alienfte |
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Description: fft_2d_test.m:对三角LFMCW雷达回波进行2维FFT处理，获得目标的距离速度信息(Perform 2D FFT processing on the triangular LFMCW radar echo to obtain the target distance velocity information)
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Size: 1024 |
Author: yuxiu1hao |
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