Description: 经典的Gabor滤波算法实现，利用指纹的局部特征包括脊线频率和方向通过求卷积实现带通滤波。-Classic Gabor filtering algorithm, using local features, including fingerprint ridge frequency and orientation, through seeking to achieve band-pass filter convolution. Platform: |
Size: 1024 |
Author:heying |
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Description: Gabor小波变换代码用于局部特征提取使用，又相当好的效果-Gabor wavelet transform feature extraction code for local use, but also very good results Platform: |
Size: 1024 |
Author:yang |
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Description: 采用误差校正算法改进的粒子滤波器，主要解决粒子滤波局部滤波发散的问题-The use of error correction algorithms to improve the particle filter, the main particle filter to solve the problem of local filtering divergence Platform: |
Size: 14336 |
Author:zhaolingling |
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Description: 实现非局部平均去噪算法（non local mean）-The realization of non-local denoising algorithm on average (non local mean) Platform: |
Size: 979968 |
Author:冯灿 |
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Description: 实现对InSAR复相位信号进行基于局部频率估计的“斜坡自适应（slope-adapt）滤波”
此滤波方法特别适用于InSAR相位图滤波，能在最大限度保持有用信息的条件下滤除各种噪声。-A matlab function of Slope-adapt-filter for InSAR phase filtering.
It is based on local frequency estimation. Platform: |
Size: 1024 |
Author:刘子龙 |
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Description: 函数实现对InSAR复相位信号的基于局部频率估计的“斜坡自适应滤波”
此滤波方法特别适用于InSAR相位图滤波，能在滤除噪声的同时最大限度地保留有用信息-This matlab function is for InSAR phase filtering,usually called "slope adapt filter".It is based on local frequency estimation. Platform: |
Size: 1024 |
Author:刘子龙 |
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Description: canny检测器是很有效的边缘检测器，该函数可以实现对目标图像的边缘提取。该方法总结如下：1.图像使用带有指定标准差的高斯滤波器来平滑，以此减少噪声；2.在每一点计算局部梯度和边缘方向；3.第二步中确定的边缘点会导致梯度幅度图像中出现脊，然后追踪所有脊的顶部，并将所有不再脊顶部的像素设置为0；4.执行边缘链接-canny detector is very effective edge detector, this function can be achieved on the target image edge detection. This method is summarized as follows: 1. Image used with the specified standard deviation of the Gaussian filter to smooth out, thereby reducing the noise 2. In the calculation of each point of local gradient and edge direction 3. The second step in determining the edge points will led to the image gradient magnitude ridge appears, and then keep track of all of the top of the ridge, and ridge at the top of all the pixels are no longer set to 0 4. the implementation of the edge link Platform: |
Size: 185344 |
Author:hanyantao |
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Description: 本算法先将彩色图像变换成灰度图像，在进行基于区域生长法进行图像分割-It segmented image with region growing. Then local adaptation luminance was computed via region-based bilateral filter. It outputted low dynamic range images in conjunction with tone mapping operator.
Platform: |
Size: 1024 |
Author:李丰 |
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Description: 主要对扩展卡尔曼滤波（EKF）、无迹卡尔曼滤波（UKF）及改进无迹卡尔曼滤波（MAUKF）算法进行研究，研究了三种算法的基本原理和各自的特点。其中扩展卡尔曼滤波器是将卡尔曼滤波器局部线性化，其算法简单，计算量小，适用于弱非线性、高斯环境。无迹卡尔曼滤波器是用一系列确定样本来逼近状态的后验概率密度。改进无迹卡尔曼滤波算法在UKF的基础上引入衰减因子。-The thesis focuses on the extended Kalman filter (EKF), unscented Kalman filter (UKF) and the improvement of unscented Kalman filter (MAUKF) algorithm research, researched the basic principles of three algorithms and their characteristics. Extended Kalman filter (EKF) is the local linear Kalman filter, the algorithm and computation are simple in weakly nonlinear and Gaussian environment. Unscented Kalman filter (UKF) is determined using a series of samples to approximate the state posterior probability density. Improved UKF algorithm (MAUKF) is introduced attenuation factor based on the UKF. Platform: |
Size: 2048 |
Author:zyz |
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Description: 作业一
要求
用C语言或者VC，VB，Matlab或其他语言完成如下实验：
1）打开一个BMP文件
2）将其局部区域的灰度值进行改变
3）另存为一个新的BMP文件
要求显示出原BMP图像和新BMP图像。
作业二
要求
1. 编程实现图像傅立叶高通、低通滤波。
2. 尝试傅立叶压缩。
作业三
要求
编程实现图像DCT高通、低通滤波。并与傅里叶变换比较。
作业四
要求
找一幅曝光不足的灰度（或彩色）图像，按照直方图均衡化方法进行处理。
作业五（一）
要求
打开一幅图像，添加椒盐、高斯噪声，然后使用邻域平均法、中值滤波法、K邻近平均法进行平滑。
作业五（二）
要求
打开一幅图像，利用Roberts梯度法、Sobel算子和拉普拉斯算子进行锐化，并比较结果。
-Operating a
Requirements
C or VC, VB, Matlab or any other language, complete the following experiment:
1) Open a BMP file
2) the gray value of its local area change
3) Save as a new BMP file
Requirement that the original BMP images and BMP images.
Task 2
Requirements
A programming image Fourier high-pass, low pass filtering.
Try Fourier compression.
Assignment 3
Requirements
Programming to achieve high-pass, low pass filtering, image DCT. And compared with the Fourier transform.
Fourth Assignment
Requirements
Looking for an exposure less than the gray (or color) image to be processed in accordance with the histogram equalization method.
Assignment 5 (a)
Requirements
Open an image, add salt and pepper, Gaussian noise, and then use the neighborhood average, median filter, K, close to the average method of smoothing.
Assignment 5 (b)
Requirements
Open an image, use the gradient method of Roberts, Sobel operator and Laplacian sharpening, and compare the results. Platform: |
Size: 4187136 |
Author:李海宁 |
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Description: This only a matlab program for non local means denoising filter implementation.-This is only a matlab program for non local means denoising filter implementation. Platform: |
Size: 172032 |
Author:pbarmashe |
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Description: this zip file contains matlab implementation for generating gabor filter banks and applying on image directory and then followed by applying local directional pattern for feature extraction and histogram for each image is calculated Platform: |
Size: 2048 |
Author:NIVI |
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Description: This MATLAB software implements the denoising algorithm (the Probabilistic
Patch-Based filter) for images damaged by multiplicative Nakagami-Rayleigh
noise as presented in: Iterative Weighted Maximum Likelihood Denoising
with Probabilistic Patch-Based Weights , C-A. Deledalle, L. Denis and
F. Tupin, IEEE Trans. on Image Processing, vol. 18, no. 12, pp. 2661-2672,
December 2009. It also corresponds to the NL-SAR filter: A non-local
approach for SAR and interferometric SAR denoising , C-A. Deledalle,
Florence Tupin and Loï c Denis, in the proceedings of IGARSS, Honolulu,
Hawaii, USA, July 2010.
This software is free and should be used only for nonprofit purposes. Any
unauthorized use of this software for industrial or profit-oriented
activities is expressively prohibited.-This MATLAB software implements the denoising algorithm (the Probabilistic
Patch-Based filter) for images damaged by multiplicative Nakagami-Rayleigh
noise as presented in: Iterative Weighted Maximum Likelihood Denoising
with Probabilistic Patch-Based Weights , C-A. Deledalle, L. Denis and
F. Tupin, IEEE Trans. on Image Processing, vol. 18, no. 12, pp. 2661-2672,
December 2009. It also corresponds to the NL-SAR filter: A non-local
approach for SAR and interferometric SAR denoising , C-A. Deledalle,
Florence Tupin and Loï c Denis, in the proceedings of IGARSS, Honolulu,
Hawaii, USA, July 2010.
This software is free and should be used only for nonprofit purposes. Any
unauthorized use of this software for industrial or profit-oriented
activities is expressively prohibited.
Platform: |
Size: 2865152 |
Author:nanolilou |
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Description: 共振解调法诊断轴承损伤类故障的原理概述如下:当轴承某一元件表面出现局部损伤时，在受载运行过程中要撞击与之相互作用的其它元件表面，产生冲击脉冲力，由于冲击脉冲力的频带很宽，必然包含轴承外圈、传感器甚至附加的谐振器等的固有频率而激起这个测振系统的高频固有振动。根据实际情况可以选择某一高频固有振动作为研究对象，通过中心频率等于该固有频率的带通滤波器把该固有振动分离出来。然后进行包络解调，去除高频衰减振动的频率成分，得到只包含故障特征信息的低频包络信号，对这一包络信号进行频谱分析便可以容易地诊断出轴承的故障来。-The principle of resonance demodulation method in the diagnosis of bearing damage such failure overview is as follows: when the bearing surface of a local damage, in the process of loading operation to hit with other elements of the interaction of surface, impact pulse power, due to the impact pulse frequency band is very wide, inevitably contains the bearing outer ring, sensors and even additional resonator and stir up the natural frequency of the vibration system of the high frequency vibration mode.A high frequency vibration mode can be selected according to actual situation as the research object, through the center frequency is equal to the natural frequency of the bandpass filter to separate the natural vibration.Then envelope demodulation, frequency components to remove the high frequency vibration attenuation, get only includes fault feature information of low frequency envelope signal, the envelope signal spectrum analysis can be easily diagnosed bearing failure. Platform: |
Size: 4096 |
Author:黄杰 |
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Description: 目前非局部均值滤波算法研究比较火热，此程序提供了基础的非局部均值滤波matlab程序。(Currently Non-local means filtering algorithm is relatively hot, this program provides the basis for the non-local mean filter matlab program.) Platform: |
Size: 12306432 |
Author:赵红 |
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Search - Local filter matlab