Description: Real-Time Facial Feature Point Extraction-Localization of facial feature points is an important step for many subsequent facial image analysis tasks. In this paper, we proposed a new coarse-to-fine method for extracting 20 facial feature points from image sequences. In particular, the Viola-Jones face detection method is extended to detect small-scale facial components with wide shape variations, and linear Kalman filters are used to smoothly track the feature points by handling detection errors and head rotations. The proposed method achieved higher than 90 detection rate when tested on the BioID face database and the FG-NET facial expression database. Moreover, our method shows robust performance against the variation of face resolutions and facial expressions. Platform: |
Size: 871424 |
Author:Ng Jack |
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Description: 对图像进行分主题过滤。
根据给定的图像样本集，进行样本训练，提取多个颜色空间中的多种方式(颜色矩，纹理谱，直方图，肤色模型等)的得到图像特征集；对待过滤图像进行特征提取，向量匹配，进而实现图像分主题分类功能。-Sub-theme of the image filter. According to a given set of image samples to conduct the training samples to extract more color space in multiple ways (color moments, texture spectrum, histogram, color model, etc.) are image feature set treatment filters for feature extraction, vector match, then the sub-theme classification of image features. Platform: |
Size: 9487360 |
Author:andy |
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Description: Gabor滤波器经常被用于形状检测和特征提取，比如增强指纹图像。本代码用matlab实现了一个二维Gabor滤波器。
代码使用如下：
function [G,gabout] = gaborfilter1(I,Sx,Sy,f,theta)
from gaborfilter1 with different f(Frequency) and theta(Angle).
for example
f:0,2,4,8,16,32
theta = 0,pi/3,pi/6,pi/2,3pi/4
then for any input image like(eg. stereo.jpg)
you have 6x5 = 30 filtered images.
You can choose your desired angles or frequencies.
You can put nominaly Sx & Sy = 2,4 or some one else.
For instance I tested above example on ( cameraman.tif )(in MATLAB pictures)
I = imread( cameraman.tif )
[G,gabout] = gaborfilter1(I,2,4,16,pi/3)
figure,imshow(uint8(gabout)) -Gabor filters are often used for shape detection and feature extraction, such as the enhanced fingerprint image. Matlab implementation of the code is a two-dimensional Gabor filter. Use the following code: function [G, gabout] = gaborfilter1 (I, Sx, Sy, f, theta) from ' gaborfilter1' with different f (Frequency) and theta (Angle). For example f: 0,2,4, 8,16,32 theta = 0, pi/3, pi/6, pi/2,3 pi/4 then for any input image like (eg. stereo.jpg) you have 6x5 = 30 filtered images. You can choose your desired angles or frequencies. You can put nominaly Sx & Sy = 2,4 or some one else. For instance I tested above example on (' cameraman.tif' ) (in MATLAB pictures) I = imread (' cameraman.tif' ) [G, gabout] = gaborfilter1 (I, 2,4,16, pi/3) figure, imshow (uint8 (gabout)) Platform: |
Size: 1024 |
Author:郑碧波 |
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Description: gabor滤波器用于在不同方位不同尺度下的图像纹理特征提取,使用matlab编写。-gabor filters for different scales in different directions of the image texture feature extraction using matlab prepared. Platform: |
Size: 1024 |
Author:hello |
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Description: HSF processes the distorted image ˜ x by M filters chosen to improve the image quality for regions with different characteristics. At each pixel,
a feature vector yn is computed using local image data. The feature vector is then used to determine the optimal filter weights to form the final output.
The mapping between the feature vector and the optimal filter weights is controlled by a number of model parameters which are determined through
training. Platform: |
Size: 9216 |
Author:pondyieee |
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Description: ace Detection Program for MATLAB 2013a
using Gabor Feature Extraction and Neural Networks
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1- copy all files and directories to the MATLAB s work folder
* In order to run the program you must have Image Processing and Neural Networks Toolboxes
2- (Important) Navigate to the root folder which contains "main.m".
3- Type "main" or "run main" in the command window
4. Only fort the first time, the program creates
Gabor filters and stores them in ./data/gabor.mat
Training set dataset and stores it in ./data/imgdb.mat
Neural Network and stores it in ./data/net.mat
5- imgdb is short for "image data base".
6- When the program menu appears click on "Train Network" and wait until the program is
done with the training-ace Detection Program for MATLAB 2013a
using Gabor Feature Extraction and Neural Networks
----------------------------------------------------------------
1- copy all files and directories to the MATLAB s work folder
* In order to run the program you must have Image Processing and Neural Networks Toolboxes
2- (Important) Navigate to the root folder which contains "main.m".
3- Type "main" or "run main" in the command window
4. Only fort the first time, the program creates
Gabor filters and stores them in ./data/gabor.mat
Training set dataset and stores it in ./data/imgdb.mat
Neural Network and stores it in ./data/net.mat
5- imgdb is short for "image data base".
6- When the program menu appears click on "Train Network" and wait until the program is
done with the training Platform: |
Size: 180224 |
Author:manu |
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Description: 高斯差分滤波器，主要用于边缘特征提取，用于模式识别中的分割预处理(Gauss differential filter, which is mainly used for edge feature extraction, is used for segmentation preprocessing in pattern recognition) Platform: |
Size: 3072 |
Author:李大文
|
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Search - filters for feature extraction