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Description: nonsubsampled contourlet一种新型的平移不变的contourlet-nonsubsampled Contourlet a new translation invariant Contourlet
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Size: 99810 |
Author: 倪超 |
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Description: NONSUBSAMPLED CONTOURLET TRANSFORM FILTER DESIGN AND APPLICATIONS
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Size: 836665 |
Author: candy |
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Description: nonsubsampled contourlet一种新型的平移不变的contourlet-nonsubsampled Contourlet a new translation invariant Contourlet
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Size: 99328 |
Author: 倪超 |
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Description: NONSUBSAMPLED CONTOURLET TRANSFORM FILTER DESIGN AND APPLICATIONS
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Size: 836608 |
Author: candy |
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Description: Nonsubsampled Contourlet Toolbox: MATLAB source code that implements the nonsubsampled contourlet transform as described in the paper The nonsubsampled contourlet transform: Theory, design, and applications.
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Size: 96256 |
Author: dao |
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Description: Please run Demo_evaluation.m
This toolbox contains Matlab files that implement the image fusion criteria used in my paper
Qu Xiao-Bo, YAN Jing-Wen, XIAO Hong-Zhi, ZHU Zi-Qian. Image Fusion Algorithm Based on Spatial Frequency-Motivated Pulse Coupled Neural Networks in Nonsubsampled Contourlet Transform Domain. Acta Automatica Sinica, Vol.34, No.12, pp: 1508-1514.Dec.2008.
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Size: 485376 |
Author: 周忠心 |
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Description: 非下采样contourlet变换是一种较新的多尺度几何分析方法，能够很好地描述信号的线奇异特征，具有多方向滤波器组。-Nonsubsampled contourlet transform is a relatively new method of multiscale geometric analysis, can well describe the signal characteristics of the line singularity, with multi-directional filter.
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Size: 97280 |
Author: gameshadow |
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Description: 1．分析研究了基于内容的图像检索系统的工作原理，关键技术如：纹
理、形状等图像底层特征的描述方法， 图像间的相似性度量方法，
图像库索引机制等。
2．研究了基于纹理特征的图像检索方法，并提出了一种基于NSCT 变
换的纹理特征提取方法。通过对SAR 图像及相关图像进行NSCT
分解，计算不同尺度不同方向上的系数幅度序列的均值，标准方差
和三阶中心矩，以此构成特征向量来描述图像的纹理。实验证明本
文提出的采用NSCT 算法有较好的特征提取效果，引入三阶中心矩
作为特征向量优于只使用均值和方差的组合特征，提高了图像检索
的查准率。
3．研究了基于形状特征的图像检索方法，并提出一种基于NSCT变换
的形状特征提取方法。把改进型Canny算子和NSCT变换相结合，先
对SAR图像及相关图像运用改进型Canny算子提取边缘，在此基础
上再进行NSCT变换，把图像的形状信息分解到不同尺度不同方向
上，从而保留各个频率分量，减少了图像形状信息的丢失。-1. First we analyze and study the principle of image retrieval system and
key techniques and algorithms of CBIR, such as the low-level feature
descriptions including texture, shape, the similarity measure between
images, the indexing methods and so on
2. Researching on the texture-based image retrieval algorithm, we
propose an algorithm of texture feature extraction based on the
Nonsubsampled Contourlet transform in this thesis. The image is
decomposed by the Nonsubsampled Contourlet transform. The mean,
standard deviation and third central moment of the magnitude of the
Nonsubsampled Contourlet coefficients at different scales and directions
are computed to extract the texture feature vector.Experiment proves the
third central moment added in NSCT arithmetic is overperformded than
only use the mean and standard deviation, and precision ratio has
improved.
3. Researching on the shape-based image retrieval algorithm, we propose
an algorithm of shape feature extraction bas
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Size: 401408 |
Author: 周二牛 |
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Description: 非子采样轮廓波变换构造及其改进以及图像融合实验及分析-Nonsubsampled transform profile and its improved structure and image fusion experiments and analysis
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Size: 68608 |
Author: 走出地平线 |
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Description: NSCT非下采样Contourlet变换，实现对图像的多尺度多方向分解，是一种真正的二维图像表示方法-NSCT nonsubsampled Contourlet transform, to achieve multi-scale multi-orientation image decomposition, is a true two-dimensional image representation
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Size: 97280 |
Author: 杨建会 |
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Description: Nonsubsampled Contourlet Transform
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Size: 2229248 |
Author: ismail |
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Description: 基于非下采样contourlet变换的多视点视频图像融合的MATLAB源码，可以成功运行-Nonsubsampled based multi-view video contourlet Transform MATLAB source image fusion can be run successfully
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Size: 1491968 |
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Description: 两种基于非下采样变换图像去噪方法，效果比contourlet变换要好-Two transform based image denoising nonsubsampled method, the effect is better than contourlet transform
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Size: 2048 |
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Description: In this paper, a multimodal image fusion algorithm based on multiresolution
transform and particle swarm optimization (PSO) is proposed.
Firstly, the source images are decomposed into low-frequency coefficients and
high-frequency coefficients by the dual-tree complex wavelet transform
(DTCWT). Then, the high-frequency coefficients are fused by the maximum selection
fusion rule. The low-frequency coefficients are fused by weighted average
method based on regions, and the weights are estimated by the PSO to gain
optimal fused images. Finally, the fused image is reconstructed by the inverse
DTCWT. The experiments demonstrate that the proposed image fusion method
can illustrate better performance than the methods based on the DTCWT, the
support value transform (SVT), and the nonsubsampled contourlet transform
(NSCT).
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Size: 40960 |
Author: ishwarya |
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Description: 基于非下采样轮廓波的边缘提取文献。很好的参考价值-Based contourlet edge extraction literature nonsubsampled. Good reference value
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Size: 1718272 |
Author: 张凡 |
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Description: 提出了一种基于非下采样Contourlet 变换的自适应图像去噪方法 首先对噪声图像进行非下采样Contourlet 变换，得到各
个尺度各个方向子带的系数，再根据该系数的能量自适应地调整去噪阈值 实验表明，与Contourlet 多尺度阈值去噪 Contourlet 自
适应阈值去噪相比，该方法在保留图像边缘细节的同时，能提高图像的PSNR 值，减少了Gibbs 现象-A new adaptive method of image de-noising based on NonSubsampled Contourlet Transform （NSCT）is presented.Firstly，
the noisy image is decomposed into a set of multiscale and multidirectional frequency subbands by NSCT， and then the threshold
is adapted automatically according to the energy of subband coefficients.Compared with the multi-scale threshold using contourlet
transform and using adaptive threshold based on contourlet transform， the simulation results show that the performance of this
method is superior in PSNR， meanwhile it can maintain the image edge and reduce the Gibbs phenomen
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Size: 200704 |
Author: jjdjjf |
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Description: 非下采样contourlet相关去噪，论文程序，包括非下采样contourlet变换工具箱，已通过仿真-Related denoising nonsubsampled contourlet paper program, including non-sampling contourlet transform toolbox has been through the simulation
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Size: 302080 |
Author: 唐春菊 |
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Description: 一种邻域一致性的NSCT域多传感器图像融合算法，针对同一场景多传感器图像融合问题，提出了一种基于邻域特性的非采样Contourlet变换域融
合新算法．首先对待融合图像进行非采样Contourlet变换分解，由邻域平均能量与方差构造各点的能量
方差决策值，基于决策值最大原则选择低频子带系数，从而在保持图像亮度的同时融合更多的边缘细
节；基于邻域能量最大原则选择带通方向子带系数，以保留更多的边缘．最后反变换得到融合图像．-Multi—sensor image fusion algorithm considering neighborhood consistency
in the
nonsubsampled
contourlet transform domain
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Size: 641024 |
Author: 吴海明 |
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Description: 多尺度图像非下采样轮廓波变换（NSCT）的工具箱，实现代码为Matlab版本。可用于图像的多尺度分析，如图像压缩、图像分割、图像融合和超分辨率等。-Multi-scale image nonsubsampled contourlet transform (NSCT) toolbox, code Matlab version. The images can be used for multi-scale analysis, such as image compression, image segmentation, image fusion and super-resolution.
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Size: 114688 |
Author: 王星 |
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Description: 非下采样轮廓波变换，NSCT变换，主要用于图像去噪，效果非常不错-Nonsubsampled contourlet transform, NSCT transform, mainly for image denoising, the effect is very good
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Size: 97280 |
Author: 倪培根 |
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