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Description: 一个二维Fourier变换的程序 适用于256*256的点阵，用于应付一般的数字图像处理需要-a two-dimensional Fourier transform procedures apply to the 256* 256 dot matrix, used to meet the general needs of digital image processing
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Size: 7168 |
Author: 李子刚 |
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Description: Windows下图象处理。可读取/保存常见的多种图象格式，如bmp,jpg,jpeg,png,pcx,tif,tga,gif,wmf,emf,wbmp,可做常规的图象处理，如缩放，裁减，翻转，镜像，旋转，柔化，锐化，亮度，对比度，模糊，伪彩，浮雕，边缘检测，中值滤波，不同图片的颜色通道分离，合并，gamma,fft变换处理等，有多文档窗口的demo程序，demo本身就能算是个功能完善的图象处理工具，能够学到很多图象处理知识。-Windows image processing. Reads/preservation of a variety of common image formats such as bmp, jpg, jpeg, png, pcx, tif, tga, gif, wmf, emf, wbmp, if the conventional image processing, such as zoom, reductions overturned, mirror, rotate, soften, sharpening, brightness, contrast, fuzzy, pseudo-color, relief, edge detection, filtering, The color photographs of different channel separation, the merger, gamma, fft transform treatment. how the document window demo procedures demo itself can be considered a functional improvement of image processing tools, can learn a lot image processing knowledge.
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Size: 1351680 |
Author: 免战牌 |
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Description: 二维情况下实现快速傅立叶变换，利用一维情况下的FFT实现-under 2D of the fast Fourier transform, using a dimension of the FFT
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Size: 2048 |
Author: 江边漫步 |
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Description: 编写一个程序计算并显示一幅二维图象的Fourier变换（幅度和相位谱）及其逆变换，要求用FFT实现-procedures for the preparation of a calculation and display a two-dimensional image of the Fourier transform (amplitude and phase spectrum) and its inverse transform, called for using the FFT
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Size: 746496 |
Author: 祖超 |
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Description: 这是一个完成各种数字图像水印的算法的程序，里面也实现了dct，fft，以及水印的改进算法，程序移植性好-This is a complete range of digital image watermarking algorithm procedure, which also realize the dct, fft, as well as to improve the watermarking algorithm, transplantation procedures and good
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Size: 53248 |
Author: 粘永健 |
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Description: 对于图象变换分析的原代码,对于初学者会有很大的帮助.-Transform for image analysis of the original code, for beginners there will be a great help.
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Size: 1024 |
Author: 吕杰 |
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Description: 由上述实验过程的图像变化可知，经过傅立叶变换和反变换及DCT离散余弦变换和反变换后，图像都发生了很大的变化，首先是经过2-D傅立叶变换后，图像数据频域出现高频数据集中，低频数据在四周的现象，然后再经过2-D傅立叶变换反变换后，图像再次恢复原始图。而2-D离散余弦变换对图像的影响也是如此。-From the above experiment, we can see the image change, after Fourier transform and inverse transform and DCT discrete cosine transform and inverse transform, the images have changed a lot, first of all, is a 2-D Fourier transform, the image data emergence of high-frequency frequency-domain data, low-frequency data in the four weeks of the phenomenon, and then after a 2-D Fourier transform inverse transform, the image again to restore the original map. And 2-D discrete cosine transform on the impact of images is also true.
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Size: 475136 |
Author: |
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Description: Gaussian filtering in one, two or three dimensions is among
the most commonly needed tasks in signal and image processing.
Finite impulse response filters in the time domain
with Gaussian masks are easy to implement in either floating
or fixed point arithmetic, because Gaussian kernels are
strictly positive and bounded. But these implementations are
slow for large images or kernels. With the recursive IIRfilters
and FFT-based methods, there are at least two alternative
methods to perform Gaussian filtering in a faster way,
but so far they are only applicable when floating-point hardware
is available. In this paper, a fixed-point implementation
of recursive Gaussian filtering is discussed and applied
to isotropic and anisotropic image filtering by making use of
a non-orthogonal separation scheme of the Gaussian filter.
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Size: 1024 |
Author: yangdi |
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Description: c语言+ARM汇编用快速傅立叶变换实现图像压缩。FFT部分用ARM汇编实现，其他部分用C语言实现。-c language+ ARM compilation using Fast Fourier Transform realize image compression. FFT part of a compilation using ARM realize, in other parts of using C language.
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Size: 87040 |
Author: liboli |
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Description: 一个数字图像处理源码，实现了jpeg，bmp，tiff，png，gif等多种图像格式的读取，边缘检测，fft变换，图像形态变化等功能-A source of digital image processing to achieve a jpeg, bmp, tiff, png, gif image formats such as read, edge detection, fft transform, image features such as morphological changes
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Size: 96256 |
Author: 邓梦 |
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Description: Matlab_基于FFT的图像配准
粗估算两幅图像之间的平移差，返回水平方向平移差到xtran，返回垂直方向平移差到ytran
用在图像配准中的粗匹配中，对噪声、图像中物体发生运动等极为鲁棒！-FFT-based Matlab_ Image Registration rough estimate of the translation between two images, poor, poor translation to return to the horizontal direction to xtran, to return to the vertical direction to the poor translation ytran image registration used in the coarse matching of noise, image movement of objects, such as occurred in a very robust!
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Size: 135168 |
Author: yol |
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Description: 本实验要求开发一个2-D FFT程序包，使其可以应用于后续的几个实验。这个程序需要完成的功能是用因子（-1）^(x+y)乘以输入图像以实现滤波的中心变换，并还要求用一个实矩阵乘以一个复数矩阵通过调用两个图像的乘法程序来实现对应元素的相乘，同时计算反傅立叶变换，得到的结果乘以（-1）^(x+y)并取其实部最后计算频谱。实验中用到傅立叶变换的基本公式，通过实验我们可以更加深刻的理解频域滤波的基础。-The experiment calls for the development of a 2-D FFT package so that it can be applied to a number of follow-up experiment. This process needs to be done is to factor the function (-1) ^ (x+ y) multiplied by the input image to achieve the center of filter change, and also requires a real matrix multiplied by a complex matrix by calling the two images of the multiplication process to achieve multiplication of the corresponding elements, calculating the anti-Fourier transform at the same time, the result multiplied by (-1) ^ (x+ y) and check the final calculation of the Department of the spectrum in fact. Fourier transform experiment used the basic formula, we can experiment more profound understanding of the basis of frequency domain filtering.
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Size: 142336 |
Author: jhm |
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Description: 别人做的对图像惊醒fft的vc程序，有需要的赶紧下啊，本人看不懂-Others to do the fft of the image awakened vc procedures, there is a need to hasten the next, ah, I can not read
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Size: 3030016 |
Author: daxue |
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Description: matlab 数字图像信号的频域分析及仿真
将二维数字图像进行傅立叶频域分析，并且做了图像幅度谱重建和相位谱重建，通过这个例子大家可以明白相位比振幅更重要。-matlab digital image signals in frequency domain analysis and simulation of two-dimensional digital image Fourier frequency domain analysis, and has done a reconstruction of the image amplitude spectrum and phase spectrum reconstruction, by this example we can understand the phase is more important than the amplitude.
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Size: 791552 |
Author: 自由色彩 |
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Description: 这是一个经典的fourier translate 傅里叶变换的程序 计算图像的中心点并标记和傅里叶频谱图的最大能量环并标记-This is a classic Fourier transform fourier translate the program to calculate the center of the image and mark and Fourier frequency spectrum of the maximum energy ring and mark
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Size: 59392 |
Author: yx |
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Description: 3．完成系统的FPGA程序开发与调试，主要包括FFT，IFFT，CMUL和转置
存储控制等模块，在此基础上，重点介绍了一种基于DDR SDRAM的行写行读高
效转置存储算法，在采用该算法进行转置存储操作时，读写两端的速度相匹配，
满足流水线操作要求，提高了整个系统的实时性。最后介绍了采用CORDIC算法
实现复图像求模运算的方法，分析了算法的硬件实现结构，并给出了基于FPGA
的实现方法及仿真结果。-he FPGA s development and debugging are implemented,including FFT, IFFT, CMUL and C0ntrol of CTM．Based Oll this，Implementation of a high efficient corner turn memory arithmetic with writing and reading by row based on DDR SDRAM is introduced．When using CTM with this algorithm，me speed of reading and writing maItches and meets the requirement of pipelined operation．Finally a method of model implementation for complex image based on CORDIC algorithm is introduced．The algorithm’s hardware implementation structure is analysed, and implementation methodology and simulation results are given
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Size: 5155840 |
Author: mabeibei |
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Description: defect detection, size and shape recognition in magnetic flaw using wavelet decomposition presented
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Size: 29696 |
Author: Nickolay Grin |
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Description: FFT 快速傅里叶变换和一般的变换 还有图像的锐化都做了处理了的。-FFT fast Fourier transform and change in general there is a sharpening of the image have done a deal with the.
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Size: 2062336 |
Author: 林安 |
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Description: 基于全局运动的图像配准程序，能够进行具有全局位移关系的图像配准-Based on the global movement of image registration procedures, to carry out a global displacement of the image registration
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Size: 168960 |
Author: 朱福珍 |
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Description: Analog transmission. Analog transmission is a transmission method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable. ... Others define that as digital transmission and as a digital signal.
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Size: 616448 |
Author: khang
|
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