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- 于傅里叶变换的图像加密技术研究 具体是将一幅图像用 fft 变换到频域 在频域中进行加密 我考虑的是通过随机相位来加密的方法,请问用matlab怎样实现 加密后在通过 ifft 得到加密后的图象 -Fourier transform in the image encryption technology to study the details of an image is to use fft transformed to the frequency doma
DFTFFT
- 傅里叶变换FFT DFT详细算法,讲解清楚详细,值得好好研究研究。-FFT DFT详细算法,讲解清楚详细,值得好好研究研究。
introductiontoFFT
- 快速傅里叶变换,提供傅里叶变换的快速算法,传统的傅里叶变换需要进行大量相关无效运算,大大降低了计算效率,而快速傅里叶变换则解决了这个问题。-Fast Fourier Transformation(FFT) is a effective algorithm for Fourier Transformation which can save much time to calculate compared to the original one.
FourierTransforminDigitalImageProcessing
- 快速傅里叶变换FFT在数字图像处理中的应用-Fourier Transform in Digital Image Processing
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.
chap1_4
- 图像的变换域处理,包括傅里叶变换、小波变换-image FFT DCT
abei9
- 是用作开发数字图像滤波器的,但功能尚未完善。但是其中的傅里叶变换和逆变换对图像初学者理解FFT有帮助。-Development of digital image filter is used, but the function has not been perfect. But one of the Fourier transform and inverse transform FFT of image help beginners to understand.
FreTrans
- 数字图像处理的傅里叶变换,包括FFT变换,离散余弦变换等!-Fourier transform of digital image processing, including FFT transform, discrete cosine transform!
FreTrans
- 数字图像傅里叶变换以及快速傅里叶变换(fft)离散余弦变换,沃尔什变换-Digital images and fast Fourier transform Fourier transform (fft) discrete cosine transform, Walsh transform
fft-transformation
- 针对图像处理的c++源代码,傅里叶的变换的实现,完全开放-fft transformation
new-FFT
- 当前信号处理中,对频谱的研究不断深入,本书中讲述如何使用快速傅里叶变化进行频谱变换,和图像相关性分析,信号处理- How to use FFT2 The note explains in detail how to apply the Matlab 2-dimensional FFT for filtering of two-dimensional signals, e.g. images. It is shown how to connect the output from fft2 to t
Transform
- 快速傅里叶变换、快速傅里反叶变换、快速余弦变换、快速余弦反变换,FFT,IFFT,DCT,IDCT-Fast Fourier transform and fast cosine transform
DFT
- 数字图像处理,灰度化、邻域平均、中值滤波、傅里叶变换、轮廓提取-Digital image processing, gray, neighborhood average, median filtering, FFT, contour extraction
win
- 是关于语音信号的快速傅里叶变换以及加噪声后傅里叶变换的显示以及图像中的比较-Is a speech signal FFT and plus noise FFT display and image comparison
RemovingNoiseFromAnImageWithFFT
- 傅里叶变换,用傅里叶变换去除噪声。图像处理-Removing Noise From An Image With FFT
image-processing-algorithm
- 几种常用的图像处理算法:高斯平滑,二值化变换,离散余弦变换,均值滤波,傅里叶变换-Several kinds of commonly used image processing algorithms: Gauss smooth, two values of transformation, discrete cosine transform, mean filtering, fft....
FFT_C
- 快速傅里叶变换的C代码实现,并且与matlab内置FFT函数进行了效果对比,非常完美。-FFT by VC++
fft_code
- 实现图像快速傅里叶变换,图像图形处理领域(implement the fft transform for images, applied in image processing.)
FFTdomain
- 对条纹进行傅里叶变换并提取正一级频,得到包裹相位并展开(Fourier transform of fringes and extraction of positive first-order frequency are used to obtain the wrapped phase and expand it.)
matlab命令流
- 信号处理傅里叶变换,三分之一倍频程,荷载时程曲线绘制(Signal processing Fourier transform, one third octave, load time history curve drawing)