-
dct
M=512 原图像长度
N=64
K=8
I=zeros(M,M)
J=zeros(N,N)
BLOCK=zeros(K,K)
显示原图像
I=imread( f:ceshiyuanshitu.bmp )
figure
imshow(I)
xlabel( 原始图像 )
显示水印图像
J=imread( f:ceshilogistic_nuaa64.bmp )
figure
imshow(J)
xlabel( 水印图像 )
嵌入水印
tem=1
for p=1:N
for q=1:N
x=(p-1)*K+1
y=(q-1)*K+1
BLOCK=I(x:x+K-1,y:y+K-1)
BLOCK=dct2(BLOCK)
if J(p,q)==0
a=-1
else
a=1
end
BLOCK(2,1)=BLOCK(2,1)*(1+a*0.01)
BLOCK=idct2(BLOCK)
I(x:x+K-1,y:y+K-1)=BLOCK
end
end
显示嵌入水印后的图像
figure
imshow(I)
xlabel( 嵌入水印后的图像 )
imwrite(I, f:ceshiembedded.bmp )
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MATLAB CODE FOR POWER FLOW
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This file contains functions implementing the analyze menu commands.
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代码实现了平移不变小波框架的快速分解重构算法。(A fast decomposition and reconstruction algorithm based on the translation invariant is included in the pakage. )
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MSK信号的调制及解调,包含三种解调方法，每种方法都给出了误码性能模拟。含有以下文件：
MSK.m
MSK_0.m
MSK_2.m
MSK_3.m
delay.m
difference.m
rand_binary.m
(MSK modulation and demodulation of signals, including three demodulation method, each method are given BER performance simulation. Contains the following files:
MSK.m
MSK_0.m
MSK_2.m
MSK_3.m
delay.m
difference.m
rand_binary.m
)
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3
说明： matlab应用程序，RBF复合PID控制的MATLAB程序(matlab applications, RBF complex PID control, MATLAB program)
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