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sample6
重叠和不重叠分段计算的功率谱比较,算法通用性强。(Overlapping and non-overlapping sub-calculated power spectrum comparison)
- 2009-02-04 23:13:12下载
- 积分:1
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DFT_matlab
是基于傅里叶变换的数字图像水印的matlab源代码(Is based on the Fourier transform of digital image watermarking matlab source code)
- 2010-05-10 01:28:24下载
- 积分:1
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sefadeaa
simulation for mobicommunication
- 2013-03-04 15:23:22下载
- 积分:1
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functionFairnessProfile_cvx
Running test programming
- 2019-04-24 12:07:19下载
- 积分:1
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logisticdiedai
用MATLAB实现遗传算法的程序,可以无限制的套用,仅供参考!(it is good!)
- 2009-06-10 16:33:53下载
- 积分:1
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OFDM_graphic_userinterface
用matlab实现了OFDM系统的图形用户界面,方便系统参数的设置(achieved using Matlab OFDM System graphical user interface to facilitate the establishment of the system parameters)
- 2007-02-04 15:40:16下载
- 积分:1
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Matlab-Answer
Matlab基础与应用教程 书本习题答案(Matlab Fundamentals and Applications tutorial books Exercise answers)
- 2012-10-28 14:58:52下载
- 积分:1
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MimoBeamRotation
说明: Beam Rotation of MIMO Radar
- 2019-03-26 07:26:39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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apes
APES谱估计方法的matlab源代码,已经通过验证(APES spectral estimation methods matlab source code has been validated)
- 2009-07-08 16:01:34下载
- 积分:1