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- 摘要:为了提高图像复原算法的性能 ,提出了一种改进的奇异值分解法估计图像的点扩散函数。从图像的退化离散模型 出发 ,对图像进行逐层分块奇异值分解 ,并自动选取奇异值重组阶数以减少噪声对估计的影响。利用理想图像奇异值向 量平均能谱指数模型 ,估计点扩散函数奇异值向量的频谱 ,再反傅里叶变换得到其时域结果。实验结果表明 ,该方法能 在不同信噪比情况下估计成像系统的点扩散函数 ,估计结果比原有估计方法有所提高 ,有望为图像复原算法的预处理提 供一种有效的手段。-Abstract : T
SimpleSENSEreconstruction
- 简单SENSE图像重建，即使通过反傅里叶变换重建出最终图像-The data was acquired from 4-channel array coil using EPI sequence (2-shot, matrix: 64X64, TE: 50 ms) at a 1.5T scanner. The code estimates the coil sensitivity profiles directly from the image with anatomical contrast b
Untitled
- 计算光线传输过程中光脉冲的傅里叶变换及反变换算法-Fourier Transformation and Inverse Fourier Transformation
kkfft
- 复数的傅里叶变换与反变换，虚部与实部分开运算，并根据标志位判断是正变换还是反变换 -Complex Fourier transform and inverse transform, the imaginary part and real part of the open operation and in accordance with flag bit to determine is positive transformation or the inverse transform
IFFT_Based_PTS
- 一个低复杂度的基于PTS的反傅里叶变换的降低OFDM峰均比的方法-A Low Complexity PTS-based anti-Fourier transform method to reduce PAPR OFDM
VC
- 各种基于V C++ 6.0 的源程序 有二值化 高斯平滑 对比度拉伸 反色 傅里叶变换 -All based on the V C++ 6.0 of the source binary Gaussian smoothing with contrast color stretch anti-FFT, etc.
DSP
- 用VC实现DSP的完整程序，可以进行快速傅里叶变换及反变换-DSP with the VC to achieve a complete program that allows fast Fourier transform and inverse transform, etc.
FFT
- 快速傅里叶变换，实部，虚部，倾角，反傅里叶变换，的源代码。-Fast Fourier transform, real part, imaginary part, angle, anti-Fourier transform, the source code.
demo_ex5
- 边缘检测 傅里叶变换及反变换 直方图均衡 中值滤波 均值滤波 高斯滤波 -Fourier transform edge detection and histogram equalization in the value of inverse transform filter mean filter Gaussian filter
LineProj
- 图形傅里叶变换及反变换，用于计算机断层图像重建-Graphic Fourier transform and inverse transform
MyPrj
- 图像处理，包括图像旋转均衡，傅里叶变换和反变换，图像抖动-very good
gaussQAM_snr
- 通信信号中编解码技术的研究，通过生成OFDM信号，经过快速傅里叶变换与反变换，最后用16QAM解调，计算信噪比。-Communication signal encoding and decoding techniques, but by generating OFDM signals, through the fast Fourier transform and inverse transform, and finally with 16QAM demodulation, signal to n
IFFT
- 用Verilog语言完成快速傅里叶变换的反变换-the realization of IFFT on Verilog language
image_fft2_and_ifft2
- 本程序是基于VC6.0平台的图像傅里叶变换及反变换，可支持读入、显示各种类型的彩色、灰度图像，并且可以方便地获取图像中任意像素点的灰度值。图像的傅里叶变换及反变换通过菜单方式执行，且代码清晰，执行效率高。-This procedure is based on VC6.0 platform image Fourier Transform and inverse transform, to support reading, showing all kinds of color, grayscale
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- 傅里叶变换与反变换在点阵图像信息压缩处理中的应用-Fourier transform and inverse transform the image information in the matrix of compression
picture-edit
- 基本功能：缩放（任意比例），旋转（任意角度），反色，翻转 扩展功能：亮度调节，画笔功能，对比度拉伸，边缘提取，傅里叶变换，滤波 只支持256 BMP格式-Basic functions: Zoom (arbitrary scale), rotate (any angle), anti-color, flip extension function: Brightness adjustment, brush function, contrast stretching, edge detect
GUI
- 用matlab语言编写了一个GUI截面，通过该界面可以实现图像的傅立叶变换，反傅里叶变换，高低通滤波，以及把黑白图像转化成灰度图像等功能。-Matlab language with a GUI section, the interface can be achieved through the Fourier transform of the image, anti-Fourier transform, high and low pass filter, and the black and wh
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- 快速傅里叶变换和反变化，函数集合，可以调用-Fast Fourier Transform and anti-change, function set, you can call
FFT_IFFT
- 实现DSP傅里叶变换以及傅立叶反变换的源程序，C语言实现。-Implement DSP Fourier transform, and inverse Fourier transform of the source, C language.
913099
- 该函数用于傅立叶反变换和这综合的东西很好用加在doc里,-The function for the synthesis of Fourier inverse transform and this stuff is very useful to add in the doc,