用matlab语言实现基于阈值处理的图像分割代码

以下是基于阈值处理的图像分割的MATLAB代码：

%% 读取图像
I = imread('image.jpg');
figure, imshow(I), title('原始图像');

%% 灰度化处理
I_gray = rgb2gray(I);

%% 选取阈值进行二值化
threshold = 100;
I_binary = imbinarize(I_gray, threshold/255);
figure, imshow(I_binary), title('二值图像');

%% 反色
I_binary_inverted = imcomplement(I_binary);
figure, imshow(I_binary_inverted), title('反色二值图像');

%% 进行连通区域分析
cc = bwconncomp(I_binary_inverted);
numPixels = cellfun(@numel,cc.PixelIdxList);
[biggest,idx] = max(numPixels);
I_segmented = zeros(size(I_binary_inverted));
I_segmented(cc.PixelIdxList{idx}) = 1;
figure, imshow(I_segmented), title('分割后的图像');