图片截图matlab

在MATLAB中，你可以使用以下代码来实现图片截图：

I = imread('1.jpeg'); % 读取图片
[row,col = size(I); % 获取图片尺寸
imshow(I) % 显示图片
impixelinfo % 读取鼠标位置
L1 = [1641,2495]; % 左上顶点
L2 = [2153,2583]; % 右下顶点
L3 = L2 - L1; 
hold on
rectangle('Position',[L1 L3],'LineWidth',1.5,'EdgeColor','r') % 绘制矩形框
hold off
S1 = I(L1(2):L2(2),L1(1):L2(1),1:1:3); % 截取矩形框内的图像
imwrite(uint8(S1),'test01.bmp'); % 保存截图为bmp格式

以上代码将读取名为'1.jpeg'的图片，然后在图片上绘制一个红色边框，框选区域由左上顶点L1和右下顶点L2确定。接下来，将选定区域的图像保存为'test01.bmp'。希望这能帮到你。<span class="em">1</span><span class="em">2</span>
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