基于MAtlab数字图像加减乘除-反色-均衡

实践一:图像打开和缩放1.1实践代码：clear allI=imread(cat.bmp);J=imresize(I,0.2);%图像缩小为0.2J2=imresize(J,15,nearest);%图像放大，最近邻插值法J3=imresize(J,15,bilinear);%图像放大，双线性插值法J4=imresize(J,15,bicubic);%图像放大，双立方插值法subplot(2,2,1);imshow(I);title(原始图像);subplot(2,2,2);imshow(J2);title(最近邻插值法);subplot(2,2,3);imshow(J3);title(双线性插值法);subplot(2,2,4);imshow(J4);title(双立方插值法);1.2实践结果截图：实践二:直方图均衡化2.1实践代码：clear all;I=imread(girl.bmp);subplot(221);imshow(I);title(原始图像);subplot(222);imhist(I);title(原始图像的直方图);I1=histeq(I);subplot(223);imshow(I1);title(原始图像的均衡化);subplot(224);imhist(I1);title(均衡化图像的直方图);2.2实践结果截图：实践三:对比度调节3.1实践代码：I=imread(catwb.bmp);J=imadjust(I,0.3 0.7,);subplot(1,2,1),imshow(I),title(实验原图)subplot(1,2,2),imshow(J),title(对比度增强效果图)3.2实践结果截图：实践四:反色4.1实践代码：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 endendsubplot(121);imshow(X1);title(原始图像);subplot(122);imshow(mat2gray(g);title(反色后的图像);4.2实践结果截图：实践五:图像的加减乘除法运算5.1实践代码：%加减乘除运算I=imread(girl.bmp);J=imadd(I,50);%数值与图像相加background=imopen(I,strel(disk,15);Ip=imsubtract(I,background);%图像相减M=immultiply(I,0.5);%图像相乘It=imdivide(I,background);%图像相除subplot(231),imshow(I);title(原始图像);subplot(232),imshow(J);title(图像相加效果图);subplot(233),imshow(Ip);title(图像相减效果图);subplot(234),imshow(M);title(图像相乘效果图);subplot(236),imshow(It,);title(图像相除效果图);K=imread(couple.bmp);H=imadd(I,K,uint16);%两个尺寸一样的图像相加%转换数据类型相加图像数据figure;subplot(131);imshow(I);title(girl的原始图像);subplot(132);