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《毕业论文基于matlab的数字图像运算说明书》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、点运算:线性点运算:>>a=imread('liftingbody.png');>>subplot(3,2,1);imshow(a);>>b1=a+50;>>subplot(3,2,2);imshow(b1);>>b2=1.2*a;>>subplot(3,2,3);imshow(b2);>>b3=0.6*a;>>subplot(3,2,4);imshow(b3);>>b4=-double(a)+255;>>subplot(3,2,5);imshow(b4);非线性点运算;>>a=imread('cameraman.tif');>
2、>subplot(1,3,1);imshow(a);>>x=1:255;>>y=x+x.*(255-x)/255;>>subplot(1,3,2);plot(x,y);>>b1=double(a)+0.006*double(a).*(255-double(a));>>subplot(1,3,3);imshow(uint8(b1));51图像代数运算:加法运算:>>i=imread('rice.png');>>subplot(2,2,1);imshow(i);>>j=imread('cameraman.tif');>>subplo
3、t(2,2,2);imshow(j);>>k=imadd(i,j,'uint16');>>subplot(2,2,3);imshow(k,[]);>>f=imadd(i,45);>>subplot(2,2,4);imshow(f);51利用imnoise()对噪声进行相加运算:>>a=imread('eight.tif');>>a1=imnoise(a,'gaussian',0,0.006);>>a2=imnoise(a,'gaussian',0,0.006);>>a3=imnoise(a,'gaussian',0,0.006)
4、;>>a4=imnoise(a,'gaussian',0,0.006);>>k=imlincomb(0.25,a1,0.25,a2,0.25,a3,0.25,a4);>>subplot(1,3,1);imshow(a);>>subplot(1,3,2);imshow(a1);>>subplot(1,3,3);imshow(k);图像减法运算:>>i=imread('cameraman.tif');>>subplot(2,2,1);imshow(i);51>>back=imopen(i,strel('disk',15));>>su
5、bplot(2,2,2);imshow(back);>>i1=imsubtract(i,back);>>subplot(2,2,3);imshow(i1);>>i2=imsubtract(i,45);>>subplot(2,2,4);imshow(i2);图像乘法运算:>>i=imread('autumn.tif');>>subplot(2,2,1);>>imshow(i);>>i16=uint16(i);>>j=immultiply(i16,i16);>>subplot(2,2,2);imshow(j);>>j2=immult
6、iply(i,0.5);>>subplot(2,2,3);imshow(j2);51图像除法运算:>>i=imread('autumn.tif');>>subplot(2,2,1);imshow(i);>>back=imopen(i,strel('disk',15));>>i1=imdivide(i,back);>>subplot(2,2,2);imshow(i1,[]);>>i2=imdivide(i,2);>>subplot(2,2,3);imshow(i2);绝对值运算:51>>i=imread('cameraman.ti
7、f');>>subplot(1,3,1);imshow(i);>>i1=filter2(fspecial('gaussian'),i);>>j=uint8(i1);>>subplot(1,3,2);imshow(j);>>k=imabsdiff(i,j);>>subplot(1,3,3);imshow(k,[]);线性组合运算:>>i=imread('cameraman.tif');>>j=imlincomb(2.5,i);>>subplot(2,2,1);imshow(i);>>subplot(2,2,2);imshow(j)
8、;>>j1=uint8(filter2(fspecial('gaussian'),i));>>k=imlincomb(1,i,-1,j1,128);>>subplot(2,2,3);imshow(k);>>j2=imread('cameraman.tif');>