matlab图像分割代码
时间: 2023-11-09 11:05:28 浏览: 298
Matlab图像分割是指将一幅图像分成多个部分或者对象的过程。以下是一些常见的Matlab图像分割代码:
【代码类型:Matlab】
1. 基于阈值的图像分割:
I = imread('rice.png');
level = graythresh(I);
BW = im2bw(I,level);
imshow(BW)
2. 基于区域生长的图像分割:
I = imread('rice.png');
J = imcrop(I);
imshow(J);
BW = roipoly(J);
imshow(BW);
3. 基于边缘检测的图像分割:
I = imread('rice.png');
BW = edge(I,'sobel');
imshow(BW);
【代码类型:Matlab函数】
1. imsegkmeans函数:基于k-means聚类的图像分割
I = imread('rice.png');
C = imsegkmeans(I,2);
B = labeloverlay(I,C);
imshow(B);
2. activecontour函数:基于活动轮廓模型的图像分割
I = imread('rice.png');
mask = zeros(size(I));
mask(25:end-25,25:end-25) = 1;
bw = activecontour(I,mask,300);
imshow(bw);
3. watershed函数:基于分水岭算法的图像分割
I = imread('rice.png');
hy = fspecial('sobel');
hx = hy';
Iy = imfilter(double(I), hy, 'replicate');
Ix = imfilter(double(I), hx, 'replicate');
gradmag = sqrt(Ix.^2 + Iy.^2);
imshow(gradmag,[]);
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