基于MAtlab數(shù)字圖像加減乘除 反色 均衡

1、實(shí)踐一:圖像打開(kāi)和縮放1.1實(shí)踐代碼：clear allI=imread(cat.bmp);J=imresize(I,0.2);%圖像縮小為0.2J2=imresize(J,15,nearest);%圖像放大，最近鄰插值法J3=imresize(J,15,bilinear);%圖像放大，雙線性插值法J4=imresize(J,15,bicubic);%圖像放大，雙立方插值法subplot(2,2,1);imshow(I);title(原始圖像);subplot(2,2,2);imshow(J2);title(最近鄰插值法);subplot(2,2,3);imshow(J3);title(雙線性

2、插值法);subplot(2,2,4);imshow(J4);title(雙立方插值法);1.2實(shí)踐結(jié)果截圖：實(shí)踐二:直方圖均衡化2.1實(shí)踐代碼：clear all;I=imread(girl.bmp);subplot(221);imshow(I);title(原始圖像);subplot(222);imhist(I);title(原始圖像的直方圖);I1=histeq(I);subplot(223);imshow(I1);title(原始圖像的均衡化);subplot(224);imhist(I1);title(均衡化圖像的直方圖);2.2實(shí)踐結(jié)果截圖：實(shí)踐三:對(duì)比度調(diào)節(jié)3.1實(shí)踐代碼：I=i

3、mread(catwb.bmp);J=imadjust(I,0.3 0.7,);subplot(1,2,1),imshow(I),title(實(shí)驗(yàn)原圖)subplot(1,2,2),imshow(J),title(對(duì)比度增強(qiáng)效果圖)3.2實(shí)踐結(jié)果截圖：實(shí)踐四:反色4.1實(shí)踐代碼：X1=imread(girl.bmp);f1=200;g1=256;k=g1/f1;m,n=size(X1);X2=double(X1);for i=1:m for j=1:n f=X2(i,j); g(i,j)=0; if(f=0)&(f=f1) g(i,j)=g1-k*f; else g(i,j)=0; end e

4、ndendsubplot(121);imshow(X1);title(原始圖像);subplot(122);imshow(mat2gray(g);title(反色后的圖像);4.2實(shí)踐結(jié)果截圖：實(shí)踐五:圖像的加減乘除法運(yùn)算5.1實(shí)踐代碼：%加減乘除運(yùn)算I=imread(girl.bmp);J=imadd(I,50);%數(shù)值與圖像相加background=imopen(I,strel(disk,15);Ip=imsubtract(I,background);%圖像相減M=immultiply(I,0.5);%圖像相乘It=imdivide(I,background);%圖像相除subplot(2

5、31),imshow(I);title(原始圖像);subplot(232),imshow(J);title(圖像相加效果圖);subplot(233),imshow(Ip);title(圖像相減效果圖);subplot(234),imshow(M);title(圖像相乘效果圖);subplot(236),imshow(It,);title(圖像相除效果圖);K=imread(couple.bmp);H=imadd(I,K,uint16);%兩個(gè)尺寸一樣的圖像相加%轉(zhuǎn)換數(shù)據(jù)類(lèi)型相加圖像數(shù)據(jù)figure;subplot(131);imshow(I);title(girl的原始圖像);subplot(132);