搜索资源列表
采用小波进行图像消噪
- 数字图像在产生过程中经常会受到噪音污染。因此,对于数字图像应该对其进行去噪音处理。在传统的基于傅里叶变换的信号去噪音方法中,可以使得信号和噪音的频带重叠部分尽可能的小,这样就可以在频域通过时,不需改变滤波方法而将信号和噪音分隔开来。但是,如果信号和噪音的频域重合时,用该方法进行噪音处理的效果就比较差。-digital image in the selection process will be subject to regular noise pollution. Therefore, the
DFT_matlab
- 是基于傅里叶变换的数字图像水印的matlab源代码-Is based on the Fourier transform of digital image watermarking matlab source code
MATLABsheji
- matlab电子信息工程程序设计 图像的傅里叶变换及其应用-Electronic and Information Engineering program design matlab image Fourier Transform and Its Applications
restruct
- 用MATLAB实现数字图像的傅里叶变换,显示图像频谱-Digital images using MATLAB Fourier transform, display the image spectrum
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
fft2
- 图像的二维傅里叶变换,matlab编程,很好用。-Two-dimensional Fourier transform image, matlab programming
watermarking-algorithm
- 基于傅里叶变换的数字水印算法,实现了图像里的水印的嵌入和提取。Matlab代码。-Fourier transform-based digital watermarking algorithm to achieve the image in the watermark embedding and extraction. Matlab code.
a-dft-watermark
- 基于傅里叶变换的数字水印算法,在原始图像的傅里叶变换域中对称的嵌入数字水印信息-Fourier transform-based digital watermarking algorithm, the original image of the Fourier transform domain, the embedded digital watermark information symmetry
GUI
- 用matlab语言编写了一个GUI截面,通过该界面可以实现图像的傅立叶变换,反傅里叶变换,高低通滤波,以及把黑白图像转化成灰度图像等功能。-Matlab language with a GUI section, the interface can be achieved through the Fourier transform of the image, anti-Fourier transform, high and low pass filter, and the black and wh
Computing-the-24
- 求DFT并做出离散函数xn的傅里叶变换图像 -Computing the 24-points DFTs of the two sequences that x1(n)= cos(nπ/6) and x2(n)= cos(nπ/4) using a single 24-point DFT by Matlab
pinpu
- 计算图想的傅里叶变换并显示其频谱,本设计中显示了四种图像的频谱,供大家学习和参考,比较每一种频谱的不同!-Map to calculate and display the Fourier transform of the spectrum, the design spectrum shows four images for all to study and reference, compare the different spectrum of each!
central-projection
- 通过极坐标变换获得图像的中心投影曲线,然后利用傅里叶变换获得图像的不变特征,从而实现对发生形变的物体的识别。-Polar coordinates to obtain the image through the center of projection curve, and then Fourier transform to obtain images of the same features, enabling the identification of objects deformation
fourier_transfer
- 实现图像的傅里叶高通、低通滤波.经Fourier变换后的图像,中间部分是低频部分,外边是图像的高频部分。经过低通滤波后,图像中的高频成分被滤除掉,只留下低频成分,图像的边缘部分变得比较模糊了-useful for image Fourier high-pass, low pass filter
fuliye
- matlab 傅里叶变换 图像的傅里叶变换,利用快速傅里叶进行图像的频率分析然后画出图形-Matlab Fourier transform The Fourier transform of the image and of the image by using the fast Fourier frequency analysis and then draw the graphics
计算傅里叶变换全息
- 傅里叶变换全息( Fourier transform hologram)的代码。用于数字图像水印,图像加密等技术。
STFFTtool3
- 对非平稳信号进行分段、截取,再对处理过后的短时信号做短时傅里叶变换,分析其频谱特性,并找到各个时间节点的频率特性,以便分析不同事件段内的声音特征,一图像的形式表达出,最终达到区分不同声音的目的。(The nonstationary signals are segmented, and then the interception, the short-time signal after processing the short-time Fourier transform, the analysi
keypoint
- 对非平稳信号进行分段、截取,再对处理过后的短时信号做短时傅里叶变换,分析其频谱特性,并找到各个时间节点的频率特性,以便分析不同事件段内的声音特征,以图像的形式表达出,最终达到区分不同声音的目的。(The nonstationary signals are segmented, and then the interception, the short-time signal after processing the short-time Fourier transform, the analysi
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)
Character E in the MATLAB
- 使用matlab二元傅里叶变换全息图,字符“E”的MATLAB模拟计算全息图,字符“E”的MATLAB模拟计算全息图的再现图像(Character "E" in the MATLAB simulation of the reproduced image of the hologram)
分数阶傅里叶变换
- 一种基于分数阶理论的傅里叶变换。可以用在信号特征提取;信号去噪方向;利用二维分数阶傅里叶变换可以实现图像处理,例如图像去噪,加密操作等;FRFT压缩包:frft源程序;以及相应数据处理子函数;两个心电图振动信号可供分析;