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lishanyuxianbianh
- 离散余弦变换(DCT for Discrete Cosine Transform)是与傅里叶变换相关的一种变换,它类似于离散傅里叶变换(DFT for Discrete Fourier Transform),但是只使用实数.-discrete cosine transform (DCT for Discrete Cosine Transform ) is associated with the Fourier transform of a transformation, it similar t
DCT
- 离散余弦变换相当于一个长度大概是它两倍的离散傅里叶变换,这个离散傅里叶变换是对一个实偶函数进行的(因为一个实偶函数的傅里叶变换仍然是一个实偶函数)。本程序实现该变换
Transform
- 图像正交变换的实现,包括一维离散傅里叶变换,二维离散傅里叶变换,离散余弦变换
fuliyebianhuan
- 傅里叶变换能将满足一定条件的某个函数表示成三角函数(正弦和/或余弦函数)或者它们的积分的线性组合。在不同的研究领域,(傅里叶变换源代码)具有多种不同的变体形式,如连续傅里叶变换和离散傅里叶变换。最初傅里叶分析是作为热过程的解析分析的工具被提出的
Fourer_Discrep
- 利用傅里叶描述子进行物体形状分析: 对于一个物体的边缘即形状来说,可将其看作是平面在空间坐标系下的点集构成的闭合曲线,这样就可用周期函数来描述其外形,可以进行离散傅里叶变换,将图像由空域表示转换到频域表示,变换后的函数可由傅里叶变换系数来描述。对于数字图像的频谱来说,低频分量的分布反映了图像主体的基本形状,高频分量的分布反映图像的细节
dft.rar
- 基于OpenCV的源码, 实现了利用DFT离散傅里叶变换计算图像的功率谱。,OpenCV based on the source, the use of implementation of the Discrete Fourier Transform DFT calculation of the power spectrum image.
matlab-code
- 对数字图像处理中的离散傅里叶变换(DFT),离散余弦变换(DCT)进行了详细的分析。其中DFT包括log视觉处理,中心点移动等。DCT包括分块处理,和保留较少系数,并比较结果。-Digital image processing of the discrete Fourier transform (DFT), discrete cosine transform (DCT) for a detailed analysis. DFT which include the log of visual pr
Ztransformation
- 画出满足差分方程:y[n]-1.25y[n-1]+0.75y[n-2]-0.125y[n-3]=x[n]+0.5x[n-1],离散时间信号X[n]的双边z变换是离散傅里叶变换的推广,而离散时间傅里叶变换在研究离散时间信号与系统中是很有用的。 -Drawn to meet the difference equation: y [n]-1.25y [n-1]+ 0.75y [n-2]-0.125y [n-3] = x [n]+ 0.5x [n-1], discrete-time signal X
ImageProcess
- VC++6编译环境,实现平滑,锐化,边缘增强,边缘提取(3种算法),边缘检测,中值滤波,频域变换(傅里叶分析FFT,离散余弦变换DCT)-VC++6 compiler environment, to achieve smooth, sharpen, edge enhancement, edge detection (three kinds of algorithm), edge detection, median filtering, frequency domain transform (Fo
tuxiangchulichengxu
- 程序内包含了大量的图像处理子程序,像离散傅里叶变换,离散余弦变换还有图像编码,图像分割多个方面的内容,值得借鉴。-Program contains a large number of image processing routines, such as discrete Fourier transform, discrete cosine transform still image coding, image segmentation various aspects, it is worth l
Transform
- 二维傅里叶变换、离散余弦变换和小波变换的Matlab实现.-Two-dimensional Fourier transform, discrete cosine transform and wavelet transform of the Matlab implementation.
DSP
- 数字图像处理中用于离散傅里叶变换将直流分量移到中心离散余弦变换等处理的简单代码-Digital Image Processing for the Discrete Fourier transform DC component to the center discrete cosine transform, to deal with a simple code
Fuliye1
- 读入.pgm格式的灰度图文件,进行二维离散傅里叶变换并且显示-Read. Pgm format, grayscale documents, conducting two-dimensional discrete Fourier transform and show
lisan
- 离散余弦变换是与傅里叶变换相关的一种变换,类似于离散傅里叶变换,但是只使用实数-Discrete cosine transform is the Fourier transform associated with a transformation, similar to the discrete Fourier transform, but using only real
FreTrans
- bmp图像的频域变换,功能包括了:傅里叶变换,离散余弦变换,沃尔什变换,图形图像研究工作者必备源码-bmp image of the frequency domain transform functions include: the Fourier transform, discrete cosine transform, Walsh transform, graphic images of workers in essential source
exp2
- MATLAB图像处理中傅里叶变换,离散余弦变换,小波变换的简单应用(simple applications of Fourier transform, discrete cosine transform, wavelet transform in MATLAB image processing,)
(精心整理)图像的傅里叶变换
- 图形处理傅里叶变换教程ppt,内有二维离散型傅里叶变换的公式,以及关于图像处理的概念(Graphics processing fourier transform tutorial ppt, there are two-dimensional discrete fourier transform formula, as well as on the concept of image processin)
快速傅里叶变换及实现——交换两幅图像的相位谱
- 快速傅氏变换(FFT),是离散傅氏变换的快速算法,它是根据离散傅氏变换的奇、偶、虚、实等特性,对离散傅立叶变换的算法进行改进获得的。它对傅氏变换的理论并没有新的发现,但是对于在计算机系统或者说数字系统中应用离散傅立叶变换,可以说是进了一大步。(Fast Fourier transform (FFT) is a fast algorithm for discrete Fourier transform. It is based on the characteristics of discrete
matlab傅里叶变化性质验证
- 二维傅立叶变换的Matlab实现,是利用图像处理软件对给 出的图像进行傅立叶变换处理。 自行设计一幅图像,验证离散傅立叶变换的性质,如: 频谱图中高频分量迅速衰减,可分离性,平移,周期性与共 轭对称性,旋转、线性和比例性,平均值。(The Matlab implementation of two-dimensional Fu Liye transform is based on image processing software. The image is processed by Fu
fft_dct_dwht
- 用matlab实现了傅里叶变换,离散余弦变换和沃什哈达玛变化。需要下载工具性app designer(Fourier transform, discrete cosine transform and Walsh Hadamard change are realized by MATLAB. Need to download tool app Designer)