搜索资源列表
DCT
- 用matlab对一张图片进行DFT变换，DCT变换,比较保留20个DCT变换系数重构的图象与原始图像的差别.-Using matlab on a picture to DFT transform, DCT transform, compared to 20 DCT transform coefficients to retain the image reconstruction of the difference between the original 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
matdft
- 离散傅立叶变换函数 Program to compute DFT coefficients directly-Discrete Fourier Transform function Program to compute DFT coefficients directly
DSP
- DFT 计算 实验步骤： 主界面下进入实验九的“DFT计算”的子实验。 输入取样点数，即有限长序列 x(n) 的长度。 输入信号表达式，或直接输入离散序列。 鼠标单击确定按钮，显示原序列及 DFT 系数的幅度、相位。-DFT calculation of the experimental steps: the main interface into the experimental Kau " DFT calculation of" sub-experi
mine
- 利用C、C＋＋或者MATLAB对一张照片进行DCT和DFT变换，并进行简要分析。 比较保留20个DCT变换系数重构的图像与原始图像之间的差别-Use C, C++ or MATLAB to carry out a photo on the DCT and the DFT transform, and a brief analysis. Comparison of retention of 20 DCT transform coefficients of image reconstructio
pmrdft21
- Computes the DFT of N real values and returns the first N/2+1 DFT coefficients. N is an integral power of two.
Dxiaochengxu
- DFT 计算 实验步骤： 主界面下进入实验九的“DFT计算”的子实验。 1) 输入取样点数，即有限长序列 x(n) 的长度。 2) 输入信号表达式，或直接输入离散序列。 3) 鼠标单击确定按钮，显示原序列及 DFT 系数的幅度、相位。 4） 实验程序 -DFT calculation Experimental steps: The main interface into the experiment nine "DFT calculation of
musicdsp
- musicdsp source code archive-Analysis Beat Detector Class Coefficients for Daubechies wavelets 1-38 DFT Envelope detector Envelope Detector class (C++) Envelope follower with different attack and release Fast in-place Walsh-Hadamard Tra
mfcc_feature_extraction
- 本代码实现语音信号的特征提取功能，包含预加重，加窗，DFT变换，设置滤波器组，计算每隔滤波器输出，求取MFCC系数的全过程-The code feature extraction of speech signal features, including pre-emphasis, windowing, DFT transform, set the filter to calculate every filter output, to strike the entire process of MF
assign3_m100295cs
- a) On sample artificial, 8X8 / 16X16 images, take the DFT, DCT, WT, & HT. Print the image & transform matrix side by side b) Repeat the above on real images of size 256X256, and display the transform coefficients as 8-bit intensity images along
dft_watermarking
- 基于dft变换域的图像水印嵌入程序，通过修改分块dft系数实现水印嵌入，可实现，供初学者参考。-Dft transform domain image watermarking embedding the watermark embedding process by modifying the block dft coefficients, achievable, and reference for beginners.
Hendriks
- 语音增强 离散傅里叶变换 不失真降噪-speech enhancement speech magnitude DFT coefficients.
MMSE
- 本文主要介绍mmse算法及其一种改进 在最优滤波中广泛应用-The matlab files enclosed in this toolbox can be used to tabulate gain functions for log-spectral magnitude MMSE estimators under an assumed Generalized- Gamma model for the clean speech magnitude DFT coefficients.
chap3files
- Program to compute DFT coefficients directly (dftd.m)
KeygenCircuitMakerV6.0Pro
- A Fast Fourier Transform (FFT) is an efficient algorithm to compute the Discrete Fourier Transform (DFT) and its inverse. There are many distinct FFT algorithms involving a wide range of mathematics, from simple complex-number arithmetic to group the
pmrdft21
- Computes the DFT of N real values and returns the first N/2+1 DFT coefficients. N is an integral power of two.
GenGamV1_2
- Toolbox for MMSE estimators of DFT coefficients under the generalized Gamma density The toolbox can also be downloaded from: http://ict.ewi.tudelft.nl/~richard/
dft
- 其中dft.m 是通过该程序同时输出图片1,2的R、G、B三通道的DFT正反变换图、相角图、幅度图，图片1,2的彩色DFT正反变换图以及DFT后图片1,2幅度相位信息置换后的彩色结果图。 dct.m是通过该程序显示“实验室用原图像”中的图片3的R、G、B三通道DCT正反变化对比图，变换系数图以及彩色DCT正反变换图。 compress.m是通过该程序输出图片3的保留n个DCT变换系数重构彩色结果图。需要说明的是其中决定保留系数个数n的mask矩阵需要手动更改。-Wherein
SubFramework
- This file contains functions for arithmatically encoding and decoding DFT coefficients Source Code for Linux v2.13.6.
DFT&DCT
- 编程实现二维8*8图像块的DFT，DCT变换 输入一副RGB图像，将其转化为YCbCr颜色空间，然后对Y分量做分块DFT变换，保存为灰度图像，统计计算时间 编程实现8*8块DCT变换,然后分别显示，当使用64个DCT系数里面的一些系数进行重构，比较其质量；同时熟悉采用FFT来实现DCT变换的思想，并显示2维8*8DCT变换的基函数图像(Programming the DFT, DCT transform of two dimensional 8*8 image block Input