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vp8_bitstream
VP8 Data Format and Decoding Specification
- 2010-09-13 18:16:29下载
- 积分：1
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bhjs
用于计算汉字笔画的程序,可对多个汉字同时计算(The procedures used to calculate the Chinese character strokes)
- 2010-01-25 11:31:10下载
- 积分：1
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feixianxing
非线性控制，在matlab中进行二阶对象的非线性仿真，研究其阶跃响应。(non-linear control)
- 2009-05-08 20:48:04下载
- 积分：1
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QAM
本文详细的介绍了在QAM解调系统中的相位估计的方法，该方法是基于4阶的盲估计(This paper describes in detail the system in the QAM demodulator phase estimation method is based on the blind estimation of order 4)
- 2011-07-02 21:38:58下载
- 积分：1
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pingfangbaoluo
基于平方包络的PSK 信号的码元速率估计。(Symbol rate is estimated based on square envelope QPSK signal. mpsk function and test_signal in cwt compressed package.)
- 2020-09-21 16:57:53下载
- 积分：1
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2D桁架结构有限元分析
matlab的桁架有限元分析程序，包含注释，十分详细(Finite element analysis program of truss based on MATLAB)
- 2019-04-05 23:18:29下载
- 积分：1
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Automaticdistinguishing
这几项M文件提供了扫描仪如何识别电子标签的方法，在许多场合都会涉及到这一类的智能识别。(This document provides a number of M scanner how to identify methods of electronic tag, in many occasions, will relate to this type of intelligent identification.)
- 2007-10-18 02:15:42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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gatbx-toolbox
说明： 经典的遗传算法工具包. 可以实现用户需要的多数遗传算法操作功能.(Classical genetic algorithm toolkit.Enables users need to operate most of the genetic algorithm function.)
- 2010-04-05 11:23:01下载
- 积分：1
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clipping
matlab限幅滤波法降低ofdm峰均比(matlab limiting filtering method to reduce PAPR ofdm)
- 2009-10-21 10:17:40下载
- 积分：1
