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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
RD
- 分数阶傅里叶变换快速算法,利用卷积原理,计算量接近fft-Fractional Fourier transform fast algorithm
codefft
- 用c++实现傅里叶变换,一维的傅里叶变换,有编译结果和运行程序。有测试图片,已经验证过,调试成功。-Using c++ implementation of Fourier transform, one-dimensional Fourier transform, has compiled the results and run the program. Have test images, has already been verified, debugging success.
FFT16
- 实现fft快速傅里叶变换,可以根据需要来进行修改。-Implementation fft Fast Fourier Transform, can be required to be amended.
fft-Fast-Fourier-Transform-program
- 傅里叶变换 C 程 fft快速傅立叶变换程序-Fourier transform C Cheng fft Fast Fourier Transform program
NumericalRecipesC
- 包含了当代科学计算过程中涉及的大量内容:求特殊函数值、随机数、排序、最优化、快速傅里叶变换、谱分析、小波变换、统计描述和数据建模、偏微分方程数值解、若干编码算法和任意精度计算等-Includes calculation of contemporary science involved substantial elements: seeking a special function values, random numbers, sorting, optimization, fast Fourie
pictureprocessing
- 图像的变换,图像的处理,边缘处理,傅里叶变换,拉普拉斯变换,小波变换-Finally, the denoised image is obtained by inverse transformation of the substitution wavelet coefficients.
Fourier_Transform
- C语言编写的傅里叶变换程序,图像处理的基础-C language Fourier transform procedure, the basic image processing
fuliyebianhuan
- 利用VC进行图像的傅里叶变换,内含源代码-VC image using the Fourier transform that contains the source code
Lab20-VideoFFT
- DM642的FFT变换,傅里叶变换,对初学者很有帮助-DM642 the FFT transform, Fourier transform, very helpful for beginners
MyDIP.dsw
- 该程序可以实现傅里叶变换,可以将其应用于图像的增强中,以达到相应的增强效果。-The program can achieve Fourier transform can be applied to image enhancement in order to achieve the corresponding enhancement.
imagevary
- 利用拉普拉斯变换法、傅里叶变换法、小波变换法、梯度函数等,计算图像的梯度变化或能量。-The use of Laplace transform, Fourier transform, wavelet transform method, the gradient function,to calculate the gradient change or energy of the image 。
FreTrans
- 用matlab简单实现傅里叶变换的源程序-Easy to use matlab implementation of the Fourier Transform source code
histogrameq
- 傅里叶变换的源代码,并生成制定图像的傅里叶变换频谱-Fourier transform of the source code, and generate the development of Fourier transform spectrum images
image
- 格式转换,傅里叶变换,滤波等图片的简单处理。-Format conversion, Fourier transform, filtering, a simple picture deal.
fft
- fft算法C程序实现,可以用来快速傅里叶变换-fft aglorithm use c language
FULIYE
- 在vc环境中,没有直接可用的傅里叶变换,需要自己编写。-At vc environment, are not directly available to the Fourier transform, required the preparation of their own.
Fourier
- 图形学中,把图像进行傅里叶变换和逆变还,并查看效果。-Graphics, put images in Fourier Transform and inverter also, and see the effect.
FreTrans
- 正交变换包括有傅里叶变换,离散余弦变换,沃尔什变换-Orthogonal transformation, including Fourier transform, discrete cosine transform, Walsh Transform
fft_in_C
- 快速傅里叶变换C语言,PDF文件,从别人处转的。-Fast Fourier Transform C language, PDF files, the transfer from the others.