MATLAB图像分割算法源代码.doc

MATLAB图像分割算法源代码 1.图像反转MATLAB程序实现如下：I=imread(xian.bmp);J=double(I);J=-J+(256-1);???????????????? %图像反转线性变换H=uint8(J);subplot(1,2,1),imshow(I);subplot(1,2,2),imshow(H); 2.灰度线性变换MATLAB程序实现如下：I=imread(xian.bmp);subplot(2,2,1),imshow(I);title(原始图像);axis([50,250,50,200]);axis on;????????????????? %显示坐标系I1=rgb2gray(I);subplot(2,2,2),imshow(I1);title(灰度图像);axis([50,250,50,200]);axis on;????????????????? %显示坐标系J=imadjust(I1,[0.1 0.5],[]); %局部拉伸，把[0.1 0.5]内的灰度拉伸为[0 1]subplot(2,2,3),imshow(J);title(线性变换图像[0.1 0.5]);axis([50,250,50,200]);grid on;????????????????? %显示网格线axis on;????????????????? %显示坐标系K=imadjust(I1,[0.3 0.7],[]); %局部拉伸，把[0.3 0.7]内的灰度拉伸为[0 1]subplot(2,2,4),imshow(K);title(线性变换图像[0.3 0.7]);axis([50,250,50,200]);grid on;????????????????? %显示网格线axis on;????????????????? %显示坐标系 3.非线性变换MATLAB程序实现如下：I=imread(xian.bmp);I1=rgb2gray(I);subplot(1,2,1),imshow(I1);title(灰度图像);axis([50,250,50,200]);grid on;????????????????? %显示网格线axis on;????????????????? %显示坐标系J=double(I1);J=40*(log(J+1));H=uint8(J);subplot(1,2,2),imshow(H);title(对数变换图像);axis([50,250,50,200]);grid on;????????????????? %显示网格线axis on;????????????????? %显示坐标系 4.直方图均衡化MATLAB程序实现如下：I=imread(xian.bmp);I=rgb2gray(I);figure;subplot(2,2,1);imshow(I);subplot(2,2,2);imhist(I);I1=histeq(I);figure;subplot(2,2,1);imshow(I1);subplot(2,2,2);imhist(I1); 5.线性平滑滤波器用MATLAB实现领域平均法抑制噪声程序：I=imread(xian.bmp);subplot(231)imshow(I)title(原始图像)I=rgb2gray(I);I1=imnoise(I,salt pepper,0.02);subplot(232)imshow(I1)title(添加椒盐噪声的图像)k1=filter2(fspecial(average,3),I1)/255;????????? %进行3*3模板平滑滤波k2=filter2(fspecial(average,5),I1)/255;????????? %进行5*5模板平滑滤波k3=filter2(fspecial(average,7),I1)/255;????????? %进行7*7模板平滑滤波k4=filter2(fspecial(average,9),I1)/255;????????? %进行9*9模板平滑滤波subplot(233),imshow(k1);title(3*3模板平滑滤波);subplot(234),imshow(k2);title(5*5模板平滑滤波);subplot(235),imshow(k3);title(7*7模板平滑滤波);subplot(236),imshow(k4);title(9*9模板平滑滤波); 6.中值滤波器用MATLAB实现中值滤波程序如下：I=imre