阿爾法均值濾波

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1、.圖像復(fù)原的目的是從觀測(cè)到的退化圖像重建原始圖像，它是圖像處理、模式識(shí)別、機(jī)器視覺(jué)等的基礎(chǔ)，在天文學(xué)、遙感成像、醫(yī)療圖像等領(lǐng)域獲得了重要應(yīng)用。代碼：I=imread('g.png');[m,n]=size(I);P=imnoise(I,'salt&pepper',0.04);Q=imnoise(I,'gaussian',0,0.02);R=imnoise(P,'gaussian',0,0.02);%加椒鹽噪聲的三種情況A=I;%d=0d=0;fori=2:m-1forj=2:n-1img_turn=P(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(

2、:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));A(i,j)=sum(img_decrese(:))/(9-d);endendB=I;%d=2d=2;fori=2:m-1forj=2:n-1img_turn=P(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));B(i,j)=sum(img_decrese(:))/(9-d);endendC=I;%d=4d=4;fori=2:m-1forj=2:

3、n-1img_turn=P(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));C(i,j)=sum(img_decrese(:))/(9-d);endend%加高斯噪聲的三種情況D=I;%d=0..d=0;fori=2:m-1forj=2:n-1img_turn=Q(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));D

4、(i,j)=sum(img_decrese(:))/(9-d);endendE=I;%d=2d=2;fori=2:m-1forj=2:n-1img_turn=Q(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));E(i,j)=sum(img_decrese(:))/(9-d);endendF=I;%d=4d=4;fori=2:m-1forj=2:n-1img_turn=Q(i-1:i+1,j-1:j+1);img_turn=sort(img_turn

5、(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));F(i,j)=sum(img_decrese(:))/(9-d);endend%加混合噪聲的三種情況G=I;%d=0d=0;fori=2:m-1forj=2:n-1img_turn=R(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));G(i,j)=sum(img_decrese(:))/(9-d);endendH=I;%d=2d=2;fori=

6、2:m-1forj=2:n-1..img_turn=R(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));E(i,j)=sum(img_decrese(:))/(9-d);endendJ=I;%d=4d=4;fori=2:m-1forj=2:n-1img_turn=R(i-1:i+1,j-1:j+1);img_turn=sort(img_turn(:));img_decrese=img_turn(floor(d/2)+1:9-floor(d/2));

7、J(i,j)=sum(img_decrese(:))/(9-d);endendfigure;imshow(I);title('原圖');figure;imshow(P);title('椒鹽噪聲圖');figure;imshow(Q);title('高斯噪聲圖');figure;imshow(R);title('混合噪聲圖');figure;imshow(uint8(A));title('d=0時(shí)去椒鹽噪聲圖');figure;imshow(uint8(B));titl