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各种频域的滤波函数,包括低通,高通,带通,同态滤波。-Various frequency domain filter function, including low-pass, high pass, band-pass, homomorphic filtering.
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用MATLAB实现频域平滑滤波以及图像去噪代码6. 计算频率域图像的幅值并进行对数变换,利用’imshow’ 显示频率域图
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7. 在频率图像上去除滤波半径以外的数据(置0);
8. 计算频率域图像的幅值并进行对数变换,利用’imshow’ 显示处理过的
频域图像数据;
-6. Calculate the frequency domain image of the amplitude and logarithmic transformation, using imsh
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包括对图像的变换,图像的增强:灰度变换增强、空间域滤波增强、频域滤波增强、常用的图像分割算法、图像配准算法-Including image transformation, image enhancement: enhanced gray-scale transformation, spatial filtering enhancement, frequency domain filtering enhancement, commonly used in image segmentation, i
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实验数字图像的空间域滤波和频域滤的实验知道书,在matlab上实现。-Experimental digital image spatial filtering and frequency domain filtering of the experiment to know the book, in matlab to achieve.
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用于数字图像处理中的变换域处理,这里给出的是频域滤波,24位滤波效果,离散余弦变换等。-For digital image processing in the transform domain processing, given the frequency domain filtering, 24 filtering effects, the discrete cosine transform.
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图像处理中的频域滤波,对图像处理的初学者很用用的啊!-Frequency domain filtering in image processing, image processing for beginners with the use of ah!
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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
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在信号处理中经常要把某些单频(窄带)干扰信号去除,例如求系统采集信号中的把工频信号滤除。实际上有一个很好的方法,便是使用陷波器。-Signal processing often take some single frequency (narrowband) interference signal removal, for example, demand in the system acquisition signal-frequency signal filtering. In fact, a
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此代码是关于高频强调滤波。利用高通滤波器削弱傅里叶变换的低频而保持高频相对不变点,这样会突出图像的边缘和细节,使得图像边缘更加清晰。但是由于高通滤波器偏离了直流分分量,从而把图像的平均值降低到了0,。一种补偿方法是给高通滤波器加上一个偏移量。通过算法达到目的。-High-Frequency Emphasis Filtering.High-pass filers zero out the DC term (the value at the center of a high-pass filter
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用matlab编写的在频域的图像平滑处理的代码,包括几个算法,简单易懂-Using matlab image smoothing frequency domain code, including several algorithms, easy to understand
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图像复原技术 常见噪声的添加技术
空域内的几种滤波复原方法
频域内的几种滤波复原方法-Image restoration techniques
Common noise added technology
Several kinds of operating filtering method
Several kinds of filtering in the frequency domain method
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图像的高通滤波,能够实现图像的高频率提取出来并以图片的形式显现。-Image high pass filtering, high frequency can realize image is extracted and shown in the form of pictures.
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此文件一共包含3个m文件。第一个文件的功能是绘制一个二值图像,并显示其傅立叶幅度谱。文件2功能是设计频域理想低通滤波器,并加以验证:读入一个二值图像(cameraman.tif)加噪声后在频域进行低通滤波观察滤波后的图像效果。文件3的功能是对图像eight.tif加入椒盐噪声后,实现Butterworth低通滤波.-This file contains 3 m documents. Functions of first file is to draw a binary image, and di
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函数paddedsize可计算P和Q的最小偶数值,PQ则是避免折叠误差的串扰所采用的补零方法。
函数dftfilt是用于频率域滤波的M函数
在house中进行空域滤波与频域滤波的比较
函数dftuv创建用于实现频率域滤波器的网格数组
在number中进行低通滤波
还可基于lpfilter生成高通滤波器。
函数D=hypot(U,V)<=>D=sqrt(U.^2+V.^2)替代
函数f=tofloat(f)<=>f=im2double(f)替代-
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应用傅立叶变换进行图像处理
傅立叶(Fourier)变换的定义
空域滤波与频域滤波-The application of Fourier transform in image processing
The definition of Fourier (Fourier transform
Spatial filtering and frequency domain filtering
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此文件主要实现了冈萨雷斯的第二版数字图像处理中的 83-87页频域滤波的功能。-This document mainly implements the function of 83-87 page frequency domain filtering in Gonzalez s second edition of digital image processing.
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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)
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编程实现图像人物的频率域滤波去噪,去除纹理,实现美图(Programming to realize filtering and denoising of Image characters in Frequency Domain, removing texture and realizing Beauty Picture)
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压缩包内包含两个m文件,一个是直方图均衡化,另一个是频域滤波,即对一幅图像进行低通、高通滤波,并且使用高频强调和直方图均衡相结合的方法增强图像;另外包含了四张测试用的图片。(Compressed packet contains two m files, one is histogram equalization, the other is a low pass filtering in frequency domain, i.e., images of a high pass filter, a
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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)
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