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为了提取区域边界，可以对图像直接运用一阶微商算子或二阶微商算子，然后根据各像点处的微商幅值或其他附加条件判定其是否为边界点。如果图像中含有较强噪声，直接进行微商运算将会出现许多虚假边界点。-.Using the feature of distinct edge contour existing between the text and the background regions in color images, a novel text extraction algorithm—CEMA(Co
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In the fields of computer vision and image analysis, the Harris-affine region detector belongs to the category of feature detection. Feature detection is a preprocessing step of several algorithms that rely on identifying characteristic points or int
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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
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图像中角点(特征点)提取与匹配算法,对于两幅相似的图像，通过角点检测算法，进而找出这两幅图像的共同点，从而可以把这两幅图像合并成一幅图像。(含程序)-Image corners (feature points) extraction and matching algorithms for two similar images by corner detection algorithm, and then find the two images in common, which can merge
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检测图像中的纹理和伪影
通过提取图像的纹理，灰度值，空间特征对图像进行分割；(Texture and artifact detection in images
The image is segmented by extracting the texture, gray value and spatial feature of the image;)
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