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chengxu 按心电信号画出信号时域波形和频谱图
- 1.找点一段心电信号,画出信号时域波形和频谱图; 2. 利用MATLAB中的随机函数产生噪声加入到心电信号中,使心电信号被污染,读出污染后的号并画出对应信号的时域波形和频谱图; 3.用双线性变换法设计一个Butterworth带通滤波器,输出所设计的滤波器的阶次,分子、分母多项式的系数,画出滤波器的频率响应(幅频响应和相频响应)曲线;(也可以根据自己需要设置滤波器性能指标) 带通通滤波器设计性能指标:fs1=10Hz, fp1=20Hz, fp1=1000Hz, fs2=120
imfreqfilt
- 对图像进行频域滤波,调用时需要提供原始图像和与原图像等大的频域滤波器作为参数,输出为经过滤波处理后又反变换回空域之后的图像。-The image frequency domain filtering, called the original image and the need to provide the original images with a large frequency domain filter as a parameter, then the output is filtere
BMPProcessD
- bmp图像处理 基本时域滤波,傅氏变换,频域滤波,图像生长 一维傅氏变换 图像边界提取 图形学滤波 -bmp image processing of basic time-domain filtering, Fourier transform, frequency domain filtering, image the growth of one-dimensional Fourier transform image edge extraction filtering Gr
FIR
- 数字信号处理基于matlab 文件内容 /conv(卷积部分) dupconv 重叠保留法 freqcirconv 频域圆周卷积 freqconv 频域卷积 timecirconv 时域圆周卷积 timeconv 时域卷积 /fft(频域分析部分) d2fft 基2FFT dft DFT最简化程序 dtft DTFT演示 /fir(fir滤波器设计) fir 得到fir滤波器hn getwindow 得到fir
turewavelet
- 是一种很重要的滤波方式,时域频域联合起来-Is a very important way of filtering, frequency domain time domain together
ImageProcessing
- 用VC++实现的图形图像处理软件,包括时域增强变换如灰度变换,直方图均衡化和频域增强变换如快速傅里叶变化高通滤波变换等-VC++ implementation with a graphical image processing software, including enhanced time-domain transform such as the gray level transformation, histogram equalization and frequency domain tr
shijidizhenxinhao
- 时频峰值滤波的理论实验,对地震噪声的滤波。-The theory of time-frequency peak filtering experiments, the seismic noise filtering.
FUSE
- 做图像融合演示时写的一组代码,包含以下功能:频域滤波去除图像斜纹、简单的加权融合、小波融合、伪彩色融合。并可以将融合后的四种图像拼在一张图中进行对比-Write a set of code to do image fusion demonstration includes the following features: frequency-domain filtering to remove images twill, a simple weighted fusion, wavelet fusi
ZX_TFPF
- 基础时频峰值滤波程序,为初学者提供参考。-Based time-frequency peak filtering procedures, and provide a reference for beginners.
Frequency_Filtering_Image
- 对图像cat的频域滤波 将图像转换为频域后滤波在转回时域图形 完成效果较好-Cat image filtering in frequency domain into the frequency domain image filtering in the back after the completion of the time domain is better graphics
second~
- 要求做一个实验,对一副M*N大小的图像重复使用截频为D0的高斯低通滤波器进行滤波。假设K为滤波次数。当K足够大时,滤波结果是什么样-Asked to do an experiment, a M* N-size image re-use the cutoff frequency for the D0 Gaussian low-pass filter for filtering. Assuming K is filtering times. When K is sufficiently large,
Solution1
- 高频强调滤波和灰度变换进行图像增强: 1. main.m 主程序 2. paddedsize.m 对图像进行补充,以便形成的方形大小等于最小接近的2的整数次幂。 3. dftfilt.m 输入图像f和一个滤波器函数,返回经过滤波和剪切后的图像g。 4. dftuv.m 提供频域坐标网格。 5. lpfilter.m 几种常用的低通滤波器。 6. hpfilter.m 实现高通滤波。 7. BodyImage.JPG 测试用图片 注: 1. 运行程序前,请在ma
lpfilter1
- 要求做一个实验,对一副M*N大小的图像重复使用截频为D0的高斯低通滤波器进行滤波。假设K为滤波次数。当K足够大时,滤波结果是什么样?并从理论上说明这一结果产生的原因。 -Asked to do an experiment on a M* N image size cutoff frequency reuse as D0 Gaussian low-pass filter for filtering. Assuming K is the filter frequency. When K is l
image-processing
- 图像类处理程序,包含加噪、滤波、几何变换、时频域变换等的综合程序-image processing
ImageProcess
- 超声大数据数据的处理,进行滤波、采样、时域变换、频域变换,并对数据波形进行显示,最后显示超声图像-Ultrasonic data data processing, filtering, sampling, time domain transform, frequency domain transformation, and the data waveform display, finally according to ultrasound images
image3
- 把时域图像转换成频域的图像,并运用各种滤波来恢复原图像-The image is converted into the time domain frequency domain image, and use a variety of filtering to restore the original image
Gauss-domain-time-frequency--
- s变换;广义s变换;高斯邻域;时频分析;滤波-s transformation generalized s transformation Gaussian neighborhood time-frequency analysis Filtering
fivtering-condition
- gaobor滤波工具 先转到频域再转回时域,不错的源码 很好用-Gaobor filtering tools to return to frequency domain to time domain, a good source is in good condition
togrcal-ovjrride
- gaobor滤波工具 先转到频域再转回时域,不错的源码 很好用(Gaobor filtering tools to return to frequency domain to time domain, a good source is in good condition)
S_Transform
- 通过建立建立几种标准信号进行S变换滤波处理(Through establishing and establishing several kinds of standard signals to carry on S transformation filter processing)