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FCM
上传内容为模糊C均值图像分割方法的Matlab程序源代码(From the contents of the fuzzy C-means image segmentation of the Matlab source code)
- 2009-05-28 00:34:04下载
- 积分:1
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selective-repeat
Selective Repeat ARQ / Selective Reject ARQ is a specific instance of the Automatic Repeat-Request (ARQ) protocol used for communications.
- 2011-08-03 16:50:25下载
- 积分:1
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mapping
It describes about the mapping function in the PAM with constellation
- 2012-09-09 18:38:00下载
- 积分:1
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Conditional entropy
计算两个离散变量x和y的条件熵z = H(x | y)。 with Input:两个相同长度的整数向量
有益于学习(Compute conditional entropy z=H(x|y) of two discrete variables x and y. with Input: of two integer vector of the same length
good for learning)
- 2020-06-23 11:20:01下载
- 积分:1
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li9_23
clear all
I=imread( lena.bmp )
figure imshow(I)
I2=imrotate(I,-4, bilinear ) 逆时针旋转4度
figure imshow(I2)
I3=fliplr(I) 垂直镜像
figure imshow(I3)
I4=imresize(I,0.5, bilinear ) 缩小为原图的1/2
figure imshow(I4)
A=double(I) 转换为double类型
计算7个不变矩
[nc,nr]=size(A)
[x,y]=meshgrid(1:nr,1:nc) 得到网格
x=x(:)
y=y(:)
A=A(:)
m.m00=sum(A)
if m.m00==0
m.m00=eps
end
m.m10=sum(x.*A)
m.m01=sum(y.*A)
计算均值
xmean=m.m10/m.m00
ymean=m.m01/m.m00
计算中心矩(li9_23.rar
cm.cm00=m.m00
cm.cm02=(sum((y-ymean).^2.*A))/(m.m00^2)
cm.cm03=(sum((y-ymean).^3.*A))/(m.m00^2.5)
cm.cm11=(sum((x-xmean).*(y-ymean).*A))/(m.m00^2)
cm.cm12=(sum((x-xmean).*(y-ymean).^2.*A))/(m.m00^2.5)
cm.cm20=(sum((x-xmean).^2.*A))/(m.m00^2)
cm.cm21=(sum((x-xmean).^2.*(y-ymean).*A))/(m.m00^2.5)
cm.cm30=(sum((x-xmean).^3.*A))/(m.m00^2.5)
im(1)=cm.cm20+cm.cm02
im(2)=(cm.cm20-cm.cm02)^2+4*cm.cm11^2
im(3)=(cm.cm30-3*cm.cm12)^2+(3*cm.cm21-cm.cm03)^2
im(4)=(cm.cm30+cm.cm12)^2+(cm.cm21+cm.cm03)^2
im(5)=(cm.cm30-3*cm.cm12)*(cm.cm30+cm.cm12)...
*((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)...
+(3*cm.cm21-cm.cm03)*(cm.cm21+cm.cm03)...
+(3*(cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2)
im(6)=(cm.cm20-cm.cm02)*((cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2)...
+4*cm.cm11*(cm.cm30+cm.cm12)*(cm.cm21+cm.cm03)
im(7)=(3*cm.cm21-cm.cm03)*(cm.cm30+cm.cm12)...
*((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)...
+(3*cm.cm12-cm.cm30)*(cm.cm21+cm.cm03)...
*()
- 2010-10-17 21:53:14下载
- 积分:1
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pingmianbo
采用平面波展开法求解二维光子晶体能带,有正方形和六边形(Plane wave expansion method for solving two-dimensional photonic crystal band)
- 2014-09-04 09:47:09下载
- 积分:1
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arima
MATLAB PROGRAMING FOE ARIMA
- 2014-09-20 12:20:00下载
- 积分:1
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Array-signal-processing-algorithms
阵列信号处理的各种算法matlab程序,包含MUSIC、ESPRIT及变形等各种算法。(Array signal processing algorithms matlab procedures, including MUSIC, ESPRIT and deformation algorithms.)
- 2013-10-12 14:58:09下载
- 积分:1
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SVMRFE
svm的一种特征选择方法,基因选取算去,减少特征数量,减少运算时间,也可提高运算精度(svm a feature selection method, gene selection operator to reduce the number of features to reduce the computation time, but also can improve the calculation accuracy)
- 2020-09-28 21:27:44下载
- 积分:1
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stbcwithLcf01
hello, it is the one of the diversity scheme. It is based on space time block code. It provides the better result as compared to other stbc codes. U can compre those with this code.
- 2012-12-03 20:06:23下载
- 积分:1