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zuixiaoercheng
matlab 最小二乘法插值！matlab 最小二乘法插值！matlab 最小二乘法插值！(matlab zuixiaoerchengfachazhi.matlab zuixiaoerchengfachazhi.)
- 2010-06-03 15:21:42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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cdma01
CDMA直接序列扩频通信系统仿真程序源代码，使用matlab语言设计的程序源码，完整代码。(Direct sequence spread spectrum CDMA communications system simulation program source code, the use of procedures designed to matlab source language, a complete code.)
- 2009-05-08 20:31:44下载
- 积分：1
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A_Non-Local
数字图像处理用非局部均值方法，其中仔细介绍了非局部均值的原理，用法(A Non Local Algorithm for Image Denoising)
- 2012-05-16 17:50:43下载
- 积分：1
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nonoise
该模型是一个模拟信号数字化传输系统，该模型只通过了PCM编码模块和译码模块(The model is an analog signal digital transmission system, the model only through the PCM coding and decoding module module)
- 2012-05-21 22:43:25下载
- 积分：1
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tulunzuiduanlumatlabcode
解决图论中最短路问题的最好方法--“Dijstra算法,”通过解析实例模型,对模型算法进行描述、拓展,并给出了求最短路以及求最短路长的MATLAB程序,此程序具有通用性。(The best way to solve the shortest path problem in graph theory is- "Dijstra algorithm," by parsing instance model, the model describes the algorithm, expand, and gives the shortest and seek seek the shortest length of the MATLAB program, this program has versatility.)
- 2013-12-14 15:48:37下载
- 积分：1
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matrixju
可以通过输入刚度或阻尼数组，生成刚度（阻尼）矩阵。(The stiffness (damping) matrix can be generated by input stiffness or damping arrays.)
- 2020-12-03 20:59:26下载
- 积分：1
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chap13
《MATLAB图像处理实例详解》源代码 第 13章
( MATLAB image processing example explanation Source Code Chapter)
- 2014-12-16 16:36:48下载
- 积分：1
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chen
利用陈超混沌映射，可以产生超混沌序列，这种序列具有类随机性、难以预测性广泛的应用与图像、视频加密领域(Chen Chao use chaotic maps can produce super-chaotic sequence, this sequence has randomness, unpredictability of the wide range of applications and images, video encryption field)
- 2015-02-04 11:47:17下载
- 积分：1
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feiji
使用GS理论简单实现相位重建的算法，图片包含在内(Simple Phase Reconstruction Using GS Theory)
- 2020-06-21 00:40:02下载
- 积分：1
