搜索资源列表
二维小波变换
- 关于二维小波变换的程序 [精华] 说明:此算法重在概念,速度并不是很快。因为FOR循环的缘故。此程序从循环矩阵的观点出发,把圆周卷积和快速幅里叶变换建立了联系。实现了分解和无失真重构。它只做了一层分解,即将256x256图形分解成为64x64的四个图形,避免了使用WKEEP()的困惑。主要思想为用小波滤波器族构造正交阵W,变换写为B=W*A*W ,反变换为:A=W *A*W,这与所有正交变换无异。W为循环正交矩阵,因此可用FFT实现快速运算,难点就在重构矩阵上。若用矩阵概念明确,一个
CTreconstruction
- 卷积反投影重建CT2维图像(Visual Fortran编写)-convolution-projection reconstruction CT2-dimensional images (Visual Fortran preparation)
imageprocessing1
- 实验内容: 1.求下列3个模板的频率响应,并显示其三维图形;选择一幅图 像,利用这3个模板分别对该图像进行卷积运算,将卷积运算 获得的图像与原始图像进行比较,说明各模板的类型以及模板 (b)、(c)的区别与联系。 2. 选择一幅图像,对其进行离散Fourier变换,仅利用其相位谱重构原图像,然后仅利用其振幅谱重构原图像,比较实验结果; 选择两幅不同类型的图像,分别进行Fourier变换,交换二者的相位谱后求Fourier反变换,比较实验结果,说明图像Fourier相位谱的
juanji
- 卷积反投影图像重建。用C++编写的。医学上断层扫描的图。
color_processing--VC
- 用VC编写的彩色图像处理程序,实现了:提取图像中平均、最大、最小灰度,在此基础上可以对图像二值化;可以进行图像边缘提取(有laplace1、laplace2、Robot的提取方法) ;对图像进行卷积滤波(高能滤波,水平、垂直、双向增强,低通滤波);实现的图像的:锐化、浮雕、反相、平滑化、霓虹、马赛克、柔化、曝光过度,扩散处理。是学习VC彩图处理不可多得的代码。
Reconstruction
- 显示MRI图像及窗位窗宽等变化、直接反投影、卷积反投影等。
sheeplogan
- sheeplogan模型的生成 平行束投影 以及卷积反投影重建
code
- 矩卷积反投影法实现CT图象重建,从投影重建三维物体的图像,就是重建一个个横断面。这样三堆图像的重建就归结为二维图象的重建-Moment convolution back projection method of CT image reconstruction, reconstruction of three-dimensional objects from projection images, is a reconstruction of a cross-section. This three
dsp
- 数字信号处理dsp的一些c语言源代码,实现卷积,傅里叶变换,傅里叶反变换等功能,并且能够通过图形界面显示出来-Dsp digital signal processing of a number of c language source code, the realization of convolution, Fourier transform, Fourier transform functions, and can be displayed through the graphical int
deconv-blind.m
- 盲反卷积 数字信号处理 图像处理 用于图像的盲反卷积 模糊处理-Blind deconvolution of digital signal processing image processing for blind image deconvolution obfuscation
noiqe
- 设计最小二乘逆滤波器求解反卷积问题,假设有观测噪声,为降低观测噪声的影响-Design least-square deconvolution problem solving inverse filter, assume that the observation noise, in order to reduce the effects of observation noise
uhat
- 设计最小二乘逆滤波器求解反卷积问题,假设有观测噪声,为降低观测噪声的影响-Design least-square deconvolution problem solving inverse filter, assume that the observation noise, in order to reduce the effects of observation noise
zcvpp12
- 设计最小二乘逆滤波器求解反卷积问题,假设有观测噪声,为降低观测噪声的影响-Design least-square deconvolution problem solving inverse filter, assume that the observation noise, in order to reduce the effects of observation noise
asxzee
- 设计最小二乘逆滤波器求解反卷积问题,假设有观测噪声,为降低观测噪声的影响-Design least-square deconvolution problem solving inverse filter, assume that the observation noise, in order to reduce the effects of observation noise
matlab+c
- 二维图像的投影和图像重建,直接傅里叶反变换法,先反投影后滤波,先滤波后反投影,卷积反投影(Two dimensional image projection and image reconstruction, direct Fourier inverse method, first backprojection, after filtering, first filter, back projection, convolution back projection)
325224
- 设计最小二乘逆滤波器求解反卷积问题,假设有观测噪声,为降低观测噪声的影响(Design least-square deconvolution problem solving inverse filter, assume that the observation noise, in order to reduce the effects of observation noise)
ESfanrecon
- 真实验条件下, 反卷积重建法的速度约是时域重建法的4~6 倍、滤波反投影法(abc eng agc is abc oh what abc)
ert
- IBD算法源代码 运用matlab软件,对图像进行模糊处理,利用盲目反卷积进行去模糊化处理(The source code of IBD algorithm uses MATLAB software to fuzzy image processing and defuzzification processing by blind deconvolution)
卷积反投影
- 滤波反投影的改进算法,先进行傅里叶变化,再进行傅里叶逆变换,去掉噪声
FBP
- 基于理想卷积反投影重建算法理论,推导出相应校正偏离的卷积反投影算法。对图像进行重建。(Based on the theory of ideal convolution back projection reconstruction algorithm, a convolution back projection algorithm for correcting deviation is derived. The image is reconstructed.)