搜索资源列表
FrequencyConversion
- 程序使用C#语言,实现图片的傅里叶变换、幅度图像和相位图像、频率成分滤波、频率方位滤波。-Program uses the C# language, to achieve the image Fourier transform, amplitude image and phase image, the frequency component filtering, frequency direction filter.
fourier_ecg
- 心电图的傅里叶变换,反傅里叶变换滤波等等。阈值算法求波位置。-ECG Fourier Transform, the anti-Fourier transform filtering and so on. Threshold algorithm for wave position.
HowToUseFFT2
- 在滤波和信号处理中,利用matlab功能实现二维快速傅里叶变换-In filtering and signal processing using matlab function realization of two-dimensional fast Fourier transform
ImageProcessing
- 图像处理的课程设计功能有 1.直方图的计算与显示 2.线性点运算 3.灰度均衡 4.傅里叶正变换 5.模板操作、中值滤波-Image processing function of curriculum design 1. Histogram calculation and display 2. Linear 3-point operations. Grayscale balance 4. Fourier transformation 5. Template operation
three_lowpass_filters
- 彩色图像转为灰度图像,灰度图像的傅里叶低通滤波,彩色图像的傅里叶低通滤波,三种滤波器的三维表示-Transforming a color image to a grayscale image Do low-pass filtering to a grayscale or color image by Fourier transform The three-dimensional representation of three types of filters
restore
- 图像增强的目标是改进图片的质量,例如增加对比度,去掉模糊和噪声,修正几何畸变等;图像复原是在假定已知模糊或噪声的模型时,试图估计原图像的一种技术。 图像增强按所用方法可分成频率域法和空间域法。前者把图像看成一种二维信号,对其进行基于二维傅里叶变换的信号增强。采用低通滤波(即只让低频信号通过)法,可去掉图中的噪声;采用高通滤波法,则可增强边缘等高频信号,使模糊的图片变得清晰。具有代表性的空间域算法有局部求平均值法和中值滤波(取局部邻域中的中间像素值)法等,它们可用于去除或减弱噪声。 -A
liu
- 直方图均衡算法,傅里叶变换,频域滤波 ,中值滤波算法实现-Common understanding of the gray image space enhance operations and realization of histogram equalization algorithm.
filt
- 关于图像滤波的一个实例应用,教会你如何通过傅里叶变换滤除单频噪声-An example of image filtering applications, teach you how to filter out single-frequency noise in Fourier transform
ERCoh2
- 对脑电信号进行滤波、快速傅里叶变换(FFT)及自相关、互相关计算,以观察每一通道脑电的相关性-On EEG filtering, fast Fourier transform (FFT) and autocorrelation, cross correlation calculation, in order to observe the correlation of each channel EEG
fourier
- 利用傅里叶变换对图像进行处理,分别用高通滤波和低通滤波对图像进行处理-image processing with fourier transform
matlab+c
- 二维图像的投影和图像重建,直接傅里叶反变换法,先反投影后滤波,先滤波后反投影,卷积反投影(Two dimensional image projection and image reconstruction, direct Fourier inverse method, first backprojection, after filtering, first filter, back projection, convolution back projection)
computer
- 文件包含三个主程序,和相关图像,三个主程序分别为computer1,computer2,computer3 computer1对图像进行了灰度化,保存等实现; computer2对图像进行了傅里叶变换,离散余旋变化,二层小波变化及重构等,并对图像进行三层小波变换,分别将HL,LH,HH三个子带置零都重构; computer3实现了图像直方图均衡化,并对图像进行了同态滤波。(The file contains three main programs, and related images, thr
CT二维图像重建程序
- CT二维图像重建的两种方法代码。傅里叶转换法和滤波反投影法。(CT two-dimensional image reconstruction of the two methods of code. Fu Liye transform method and filtered back projection method.)
DFT
- visual c++写的傅里叶变换,以及在频域实现低通滤波和高通滤波(Fourier transform written by visual c++ and low-pass filtering and high pass filtering in frequency domain)
MATLAB教学视频:傅里叶变换的频域滤波详解
- MATLAB教学视频:傅里叶变换的频域滤波详解(MATLAB teaching video: Fourier transform filtering in frequency domain)
fft
- 快速傅里叶变换,高通滤波,低通滤波,可有效进行对不同频段滤波处理,提高数据稳定性。(Fast Fourier transform, high pass filter, low pass filter)
MATLAB
- 对二维图像进行傅里叶变换,在频率进行低通滤波(Fourier transform of two-dimensional image and low pass filter in frequency)
SFFT
- 此程序实现了稀疏傅里叶变换全过程,包括频谱重排,窗函数滤波,算法重构(it realizes the sparse fft)
x
- 采用傅里叶变换,实现噪声图像的修复,主要内容是通过傅里叶变换构建高通滤波,使用matlab 编程 实现(The main content is to construct high pass filter by Fourier transform and implement it with Matlab programming)
FFT
- 图像的二维傅里叶变换及变换域滤波,同态滤波(FFT and Wave filtering)