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DFT
- 题目：离散富立叶变换（DFT）和频谱分析.matlab实现 1信号函数h(t)= e-a*t*tsin(2πft)2编程计算的离散富立叶变换（DFT）和IDFT图像。3计算振幅谱，相位谱以及检测信号主频-Title: Discrete Fourier Transform (DFT) and spectral analysis. Matlab function to achieve a signal h (t) = ea* t* tsin (2πft) 2 programming computin
DFT
- 对图像进行傅里叶变换，观察其幅度谱和相位谱-Fourier transform of the image to observe its amplitude spectrum and phase spectrum
DFT
- 编写一个matlab函数用一个N点离散傅里叶变换同时计算两个N点实序列的离散傅里 叶变换，并将结果与直接使用两个N点离散傅里叶变换计算出来的结果进行比较-Write a matlab function with an N point discrete Fourier transform and calculate actual sequence of two N point discrete Fourier transform, and the results with the direct u
DFT_and_DCT
- 对一幅图像进行DCT与DFT变换，分析变换后的高低频分量系数-DCT and DFT on an image, analysis of high frequency components of the transformed coefficient
image_dft
- 不使用MATLAB内置函数作图片的离散傅里叶变换-This program finds the DFT of an image without using the inbuilt function in matlab
MainCode
- matlab code that make an image with capability of rotataing, shifting, .. and compute 2-d DFT.
DFT-watermaking
- 灰度图像加入和提取水印的matlab实现源码，基于傅里叶域变换。-It s matlab code about embdding and extracting watermark to gray image,using DFT.
Fundamentals_of_Digital_Image_Processing_-_Anil_K
- In this a DFT based Digital Image Watermarking Scheme is developed. Digital image watermarking is a technology for imperceptibly embedding various types of information into an image. The biggest challenge for image watermarking is manipulations and d
T1122zhenyanh
- 这个是C制作的源代码。。。对一幅图像进行DFT变换，分别对对源图像在空间域和频域里进行二次抽样和差值，最后得出结果比较。 -This is the C source code produced. . . DFT transform, an image of the source image to the second sampling and the difference in the spatial domain and frequency domain, the final outco
06168353
- The Fast Fourier Transform (FFT) is one of the rudimentary operations in field of digital signal and image processing. Some of the very vital applications of the fast fourier transform include Signal analysis, Sound filtering, Data compressio
DigitalImageProcess
- DFT.m:计算一幅图像的DFT，并在屏幕上显示频谱图，将频谱原点移到图像中间。 zhifangtu.m：用直方图均衡算法对一幅图像进行增强。 fenge.m：设计一种算法自动从灰度图像上求得全局分割阈值，将一幅图像中的目标和背景分隔开，使这幅图像的目标和背景有着不同的平均灰度。 gongshengjuzhen.m:求出一幅图像的像素和有下一个像素的共生矩阵。 OpenAndClose.m：实现二值形态学的膨胀、腐蚀、开操作、闭操作。-DFT.m: Calculates the
huffman coding
- 利用霍夫曼编码进行图像压缩处理，此程序为霍夫曼编码的示例(The performance of a Huffman code is a function of the entropy of the signal distribution and therefore can be highly dependent in the transform domain in which the code is applied. For example, JPEG partitions an image