Description: 用2D_FFT方法重建核磁共振的图像，输入为K空间复数数据，输出为重建后的图像数据(复数)。-2D_FFT used NMR methods of image reconstruction, the importation of K space complex data, output for the reconstruction of the image data (in the plural). Platform: |
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Description: computed tomography 三维图像重建算法，该算法在二维ART基础上改进所得-three-dimensional computed tomography image reconstruction algorithm, the algorithm on the basis of two-dimensional ART improve income Platform: |
Size: 1024 |
Author:weige |
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Description: 基于三维空间三角网格的二维投影图像变换，包括3D仿射变换，基础矩阵求解及欧式空间的重构，对基于图像的三维重构有研究的朋友可以看下-triangular grid transform two-dimensional projection images, including 3D affine transformation, based Matrix Solution and European space reconstruction, based on the three-dimensional image reconstruction studies have friends in a glance Platform: |
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Author:郭震宇 |
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Description: 稀疏分解图像重建程序，把图像分解成多个小块图像，然后再各个子块重建后边缘处理后合并成整个图像。-sparse decomposition image reconstruction process, the image is divided into a number of small images, then each sub-block redevelopment edge after the merger into the whole image. Platform: |
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Author:fanghui20006 |
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Description: 针对多聚焦图像融合，本文首先介绍了小波变换融合算法，虽然小波变换方法无冗余，高频分量损失较小，具有较好的融合效果，但存在两个主要缺点：一是移变性，二是融合图像在重构时会受到一些外来因素的影响，所以仍会丢失一些边缘信息，为了克服小波变换法的以上缺点，可以采用基于小波分解和点扩展函数模型PSF相结合的融合方法。该方法首先对不同的图像进行无降2采样的小波分解，以保持与源图像大小相同，然后分别将其各方向、各尺度的高频分量进行叠加，并依此提取其高频分量的特征信息来判定清晰目标或模糊目标，以此来设计融合算法，采用一定的策略将两副源图像进行融合，从而避开了小波的反变换，因此融合后的图像具有比小波变换法更好的融合效果。-multi-focus image fusion, this paper introduces the wavelet transform algorithm, Although the wavelet transform non-redundant, the loss of high-frequency components are smaller, better integration effect, But there are two major drawbacks : First, the shift variability and the second is the integration of image reconstruction will be subject to a number of external factors. Therefore, there would still be some marginal loss of information, in order to overcome the wavelet transform of the above shortcomings, can be used based on wavelet decomposition and the point spread function PSF model combining the fusion method. The first pair of different images ratchet two sampling wavelet decomposition, and to maintain the same source image size. Then all of its direction, the scale of high-freque Platform: |
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Author:廖鑫鹏 |
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Description: 利用MATLAB进行图象重建的算法研究，MATLAB在无损探测领域的应用-The use of MATLAB for image reconstruction algorithm, MATLAB in the field of application of non-destructive detection Platform: |
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Author:fife |
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Description: matlab 下经典的利用wavedec2,appcoef2,detcoef2对图像进行分解提取高低频系数完成图像压缩和重构的源程序.-matlab under the classic use of wavedec2, appcoef2, detcoef2 image decomposition extraction coefficient of the completion of the high-low frequency image compression and reconstruction of the source. Platform: |
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Author:桑圣洁 |
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Description: 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相位谱的重要性。-Experimental contents: 1. Template for the following three frequency response and to show its three-dimensional graphics select an image using the three templates, respectively, of the image convolution operation, the convolution operation to obtain the images were compared with the original image to illustrate the template the type of template (b), (c) the difference with the contact. 2. Select an image, its discrete Fourier transform, only to use its phase spectrum remodeling the original image, and then only the use of its amplitude spectrum reconstruction of the original image to compare experimental results choice of two different types of images, respectively Fourier Transform, the exchange between the two after the phase spectrum for Fourier Transform, compare experimental results to illustrate the image of the importance of Fourier phase spectrum. Platform: |
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Author:syq |
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Description: 完成对输入图像Fig8.23.jpg利用Haar小波进行图像小波变换，变换系数量化，小波逆变换完成图像重构，并计算其重构图像的均方误差和信噪比来评估图像的重构误差-Completion of the input image Fig8.23.jpg use Haar wavelet image wavelet transform, transform coefficients quantify the inverse wavelet transform the completion of image reconstruction, and calculate the reconstructed image of the mean square error and signal to noise ratio to assess the image reconstruction error Platform: |
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Author:朱为总 |
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Description: 读入一个视频序列中的任意两帧，对这两帧图像进行运动估计（全搜速方法），并且利用得到的运动矢量进行插值重建处于这两帧中间位置的图像。-Reading into a video sequence of arbitrary 2, the two-frame image motion estimation (full-speed search method), and the utilization of the motion vector for interpolation frame reconstruction in the middle of these two images. Platform: |
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Author:吴珅 |
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Description: This directory includes matlab interface of the curvelet transform
using usfft.
Basic functions
fdct_usfft.m -- forward curvelet transform
afdct_usfft.m -- adjoint curvelet transform
ifdct_usfft.m -- inverse curvelet transform
fdct_usfft_param.m -- returns the location of each curvelet in phase-space
Useful tools
fdct_usfft_dispcoef.m -- returns a matrix contains all curvelet coefficients
fdct_usfft_pos2idx.m -- for fixed scale and fixed direction, returns
the curvelet which is closest to a certain point on the image
Demos
fdct_usfft_demo_basic.m -- display the shape of a curvelet
fdct_usfft_demo_recon.m -- partial reconstruction using curvelet
fdct_usfft_demo_disp.m -- display all the curvelet coefficients of an image
fdct_usfft_demo_denoise.m -- image denoising using curvelet-This directory includes matlab interface of the curvelet transform
using usfft.
Basic functions
fdct_usfft.m-- forward curvelet transform
afdct_usfft.m-- adjoint curvelet transform
ifdct_usfft.m-- inverse curvelet transform
fdct_usfft_param.m-- returns the location of each curvelet in phase-space
Useful tools
fdct_usfft_dispcoef.m-- returns a matrix contains all curvelet coefficients
fdct_usfft_pos2idx.m-- for fixed scale and fixed direction, returns
the curvelet which is closest to a certain point on the image
Demos
fdct_usfft_demo_basic.m-- display the shape of a curvelet
fdct_usfft_demo_recon.m-- partial reconstruction using curvelet
fdct_usfft_demo_disp.m-- display all the curvelet coefficients of an image
fdct_usfft_demo_denoise.m-- image denoising using curvelet Platform: |
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Author:daisy |
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Description: 利用小波双线性超分辨率重建算法得到的重建图像会出现低、高频系数不匹配的现象，从而使得到的高分辨率图像灰度偏移。本文对该方法进行了改进，并引入局部适应插值得到更为理想的重建算法。即小波与局部适应插值结合算法。-Using Wavelet bilinear super-resolution reconstruction algorithm is the reconstructed image will appear low, high-frequency coefficients does not match the phenomenon, thereby enabling high-resolution image to be offset. In this paper, the method is improved, and the introduction of local interpolation to be better adapted to the reconstruction algorithm. That is, wavelet interpolation combined with the local adaptation algorithm. Platform: |
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Author:wangjikui |
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Description: 基于人类视觉系统HVS的小波域数字图像水印
包含：嵌入、提取、分解、重构等-Based on human visual system HVS digital image watermarking in wavelet domain include: embedding, extraction, decomposition, reconstruction, etc. Platform: |
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Author:杜小三 |
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Description: 全变差图像处理Matlab程序，for the paper: "Algorithms and Software for Total Variation Image Reconstruction via First-Order Methods, Numerical Algorithms"-Software for Total Variation Image Reconstruction (for Matlab Version 7.5 or later)
"mxTV" is a software package for image reconstruction based on the Total Variation model, and including denoising, inpainting, and deblurring. The work was carried out as part of the project CSI: Computational Science in Imaging, funded by the Danish Research Council for Technology and Production Sciences, and headed by Prof. Per Christian Hansen, DTU Informatics. The collaborators are DTU Informatics, Dept. of Electronic Systems at Aalborg University, and MOSEK ApS.
The underlying algorithms are based on recently published first-order methods developed by Nesterov, tailored specifically to the image restoration problems. These methods have O(1/ε) complexity, where ε is the accuracy of the solution. The core computational routines are written in C, with a mex interface to Matlab. The algorithms and the software are described in the paper:
J. Dahl, P. C. Hansen, S. H. Jensen, and T. L. Jensen, Alg Platform: |
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Author:l |
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Description: 用matlab建立光学综合孔径望远系统的仿真程序，包括成像系统的MTF分析及图像重构。-Image Reconstruction Technique of the Optical Synthetic Aperture in the Telescope
Platform: |
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Author:Gaojinming |
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Description: 小波变换相关函数在matlab中如何应用
小波分解和重构过程
小波变换在图像压缩、融合等方面的应用并用matlab来实现(How to apply wavelet transform correlation function in MATLAB
Wavelet decomposition and reconstruction process
The application of wavelet transform in image compression and fusion is realized by MATLAB.) Platform: |
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Author:ysm_ |
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Search - image reconstruction in MATLAB