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TheAppliedResearchesBasedonWaveletAnalysisTheoryan
- 小波分析是时间- 频率分析, 它具有时频窗任意“伸缩”的能力, 基于小波变换原理的数字滤波器具有 傅里叶分析不可比拟的优越性。小波的分解与重构算法简单, 这使得滤波器实现起来简单可靠
dipum_1.1.4
- Image Processing的所有源代码,包括傅里叶变换,各种滤波器的函数实现等。
DCT
- 实现图像的DCT高通、低通滤波器并与傅里叶变换做比较.有图可见,经DCT低通滤波后,图像变得很模糊。因为DCT是FFT取其实部,能量减少,因此图像变得很模糊,没有经FFT滤波后的效果好。 经DCT高通滤波后的图像: 经DCT高通滤波后,图像的低频部分被滤除掉,图像变黑,只有边缘的痕迹可见。-The DCT of image high-pass, low pass filter and compared with the Fourier transform.
txlb
- 数字图像处理中的滤波和傅里叶压缩,包括理想低通滤波器,巴特沃茨高通滤波器,高斯带通滤波器,高斯带阻滤波器,FFT图像压缩。附原图像和处理后的图像截图。-Digital image processing in filtering and Fourier compression, including the design of an ideal low-pass filter, design Batewoci high-pass filter, bandpass filter design Gaus
HightFilterAndLowFilter
- 实现正逆傅里叶变换,并在此基础上实现各种高低通滤波器,采用OPENCV实现。图像只针对2的整数次幂的方图-implement kinds of high filters and low filters in OPENCV based on implementing the FFTs and IFFTS.
DSPcode
- 数字信号处理源代码,包括冲激响应、传递函数、零相位函数、全通函数、离散时间傅里叶变化、离散傅里叶变化、滤波器设计及级联-Digital signal processing source code, including impulse response, transfer function, zero-phase function, all-pass function, discrete-time Fourier changes, discrete Fourier changes, filter
DigitalSignalofMatlab
- 数字信号处理,包括:各种现有信号及随机信号的输入,从文件读取数据的输入,各种滤波器的实现,傅里叶变换等,傅里叶反变换等,谱分析,利用图形界面形式编写,简单且可视化强,便于理解。-Digital Signal Matlab
frequency
- 用傅里叶变换对图形进行变换,然后用高斯低通、高通滤波器对图像进行去噪-Fourier transform graphics transform, and then use Gaussian low-pass, high pass filter for image denoising
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
three_highpass_filters
- 用9种方法对彩色图像进行傅里叶高通滤波,有三种基本高通滤波器,三种增强型,三种加上直方图均衡的-Use nine methods doing high-pass filtering to a color image by Fourier transform:three basic filters,three enhanced,three enhanced with histogram equalization
DIB
- 这是一个常用的数字图像处理程序,包括图像的大小变换,傅里叶变换,傅里叶逆变换,常有的滤波器等-This is a commonly used digital image processing procedures, including the size of the image transform, Fourier transform, inverse Fourier transform, filter and so often
DSP_MATLAB
- 数字信号处理相关matlab程序,包括傅里叶变换,iir滤波器,fir滤波器等-iir and fir
FT&chirpZ
- 利用傅里叶变换以及chirpZ变化求得计算低通滤波器的响应频率(The response frequency of low pass filter is calculated by Fourier transform and chirpZ change)
fft_filter
- 快速傅里叶变换滤波器的matlab程序算法设计及使用(It is a FFT-Filter designed by MATLAB code.Design and Application of Matlab Algorithm for Fast Fourier Transform Filter)
fir_test
- 对输入的原始数据qqqq4444,qqqq4444数据需自己手动输入,进行低通滤波,然后进行快速傅里叶变换,最后算出距离(For input raw data, qqqq4444, qqqq4444 data need to be manually input, low-pass filtering, and then fast Fourier transform, and finally calculate the distance)
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)
cvGabor
- 傅里叶变换是一种信号处理中的有力工具,可以帮助我们将图像从空域转换到频域,并提取到空域上不易提取的特征。但是经过傅里叶变换后,图像在不同位置的频度特征往往混合在一起,但是Gabor滤波器却可以抽取空间局部频度特征,是一种有效的纹理检测工具(Fu Liye transform is a powerful tool in signal processing, which helps us transform images from airspace to frequency domain and e
threefilterCompare
- 将图像傅里叶变换,然后利用高斯、巴特沃斯、理想滤波器实现图像高频成份和低频成份的分离。(The image Fu Liye transform is applied, then the Gauss high pass lowpass filter is used to achieve the separation of high-frequency components and low frequency components.)
IIR一阶低通滤波器
- matlab实现带通滤波,傅里叶变换,得到频域信号,带桶处理(Achieve band pass filter, Fourier transform, get frequency domain signal, with bucket processing.)
傅里叶谱与频域低通滤波
- 傅里叶谱与频域低通滤波 (a)从图书网站下载图4.41(a)并计算其(居中)傅里叶谱。(b)显示频谱。(c)在等式(4.8-7)中实现高斯低通滤波器。您必须能够指定结果2D函数的大小,M x N。此外,您必须能够指定高斯函数的中心位置。(d)从图书网站下载图4.41(a),并对其进行低通滤波,以复制图4.48中的结果。(Fourier Spectrum and Lowpass Filtering in Frequency Domain (a) Download Fig. 4.41(a)