搜索资源列表
FFT
- 主要实现傅里叶变换的Matlab程序，程序带有输出波形图像(The main realization of the Fourier transform Matlab procedures)
matlab+c
- 二维图像的投影和图像重建，直接傅里叶反变换法，先反投影后滤波，先滤波后反投影，卷积反投影(Two dimensional image projection and image reconstruction, direct Fourier inverse method, first backprojection, after filtering, first filter, back projection, convolution back projection)
computer
- 文件包含三个主程序，和相关图像，三个主程序分别为computer1，computer2，computer3 computer1对图像进行了灰度化，保存等实现； computer2对图像进行了傅里叶变换，离散余旋变化，二层小波变化及重构等，并对图像进行三层小波变换，分别将HL，LH，HH三个子带置零都重构； computer3实现了图像直方图均衡化，并对图像进行了同态滤波。(The file contains three main programs, and related images, thr
DSP_LAB 1
- 傅里叶级数项数不同对傅里叶级数拟合的影响，生成gif图像。(The number of different effects on Fourier series fitting)
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,)
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
- 傅里叶边缘提取图像边缘，匹配图像边缘，选择最相似图像(Fourier edge is used to extract the edges of the image, and to match the edges of the image, and the most similar image is selected)
频域处理
- 对影像进行频率域处理，利用傅里叶变换得到结果(The image is processed in frequency domain and the results are obtained by Fourier transform)
FFT
- 利用matlab进行傅里叶变换及反变换,实现空域到频域，频域到空域的图像处理(Using Fourier transform and inverse transform, to achieve the airspace to the frequency domain, frequency domain to the airspace image processing)
fft_example
- 傅里叶对加速度信号的处理程序，通过此程序实现对加速度信号的处理 实现图像化(Fu Liye's processing program for acceleration signals)
ch
- 利用MATLAB计算傅里叶变换并作出频谱图像的代码和图像，涉及FFT算法，看代码可以理解一下~为北京理工大学信号与系统实验实验三的答案(Fourier transform using MATLAB calculation and make spectral image code and images, involving the FFT algorithm, look at the code can understand ~ Beijing Institute of Technology sig
fft
- 对数字图像进行傅里叶变换，查看其频谱图及相位图。(Fourier transform of digital images, to see its spectrum and phase diagram.)
新建 Microsoft Word 文档
- opencv实现傅里叶变换,傅立叶变换是把图像从空间域转化到频率域的变换。空间域：一般的情况下，空间域的图像是f（x，y）=灰度级（0-255），形象一点就是一个二维矩阵，每个坐标对应一个颜色值。频率域：频率：对于图像来说可以指图像颜色值的梯度，即灰度级的变化速度，幅度：可以简单的理解为是频率的权，即该频率所占的比例：能量=幅度（可能不太准确），变换结果为F（u，v），F代表幅度值，u代表x方向的频率，v代表y方向的频率(Fu Liye transform is the transformati
小波分析习题解答
- 实现f(x)以及N=1,2,5,7时，傅里叶级数的部分和SN(x)的图像。观察部分和SN的图像与f图像的接近情况。对区间-2π≤x≤2π重复以上过程。(F (x) and N=1,2,5,7, the part of Fourier series and the image of SN (x). The image of the observation part and the SN is close to the f image. The interval -2 = x = 2 pi pi r
fftcalcshift
- 实现了利用傅里叶变换求两张图像平移距离； 输入是两张具有平移关系的图片； 输出distancex，distancey表示求得的平移距离(The Fourier transform is used to calculate the translation distance of two images. The input is two images with a translation relationship. The output distancex, distancey repres
function z
- 提取图像轮廓描述子 ，为后续构建做铺垫。与傅里叶描述子反变换搭配使用(extraction descr iption about picture or image.txt)
Radix2FFT原版
- 很多时候都会用到傅里叶变换来处理图像数据。可以通过C＋＋来有效的实现快速傅里叶变换。(to effectively implement the fast Fourier transform by C + +.)
MATLAB
- 对二维图像进行傅里叶变换，在频率进行低通滤波(Fourier transform of two-dimensional image and low pass filter in frequency)
fuliyemiaoshuzi
- 傅里叶描述子用于图像特征提取，对图像缩放，平移和旋转具有转换不变性，适合形状特征的提取(The Fourier descr iptor is used for image feature extraction, the image zooming, translation and rotation are invariant and suitable for the extraction of shape features.)