-
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 )
- 2010-06-13 18:43:39下载
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mimo系统2发2收的blast系统QR算法仿真。(mimo system 2 of the blast made 2 admission QR algorithm simulation system.)
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在应用程序中调用内核函数获取父进程的全路径名的最好方法。在辨识由谁启动的时候要用。(关闭翻译英语中文德语检测语言
中文(简体)英语日语
翻译文字或网页
在应用程序中调用内核函数获取父进程的全路径名的最好方法。在辨识由谁启动的时候要用。
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Zài yìngyòng chéngxù zhōng tiáo yòng nèihé hánshù huòqǔ fù jìnchéng de quán lùjìng míng de zuì hǎo fāngfǎ. Zài biànshì yóu shuí qǐdòng de shíhou yào yòng.The best way to call the kernel function to get the full path name of the parent process in the application. In recognition of who started the time to use.)
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本代码是ADC有效位测试的三参数经典算法的MATLAB文件,仅供参考。(the code is for enob of ADC using classical 3-parameter testing method.)
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