在Matlab中在图像上绘制矩形 [英] Draw rectangles on an image in Matlab

问题描述

我试图弄清楚如何在Matlab中的图像上绘制矩形.

I am trying to figure out how to draw rectangles on an image in Matlab.

在图像上绘制矩形之后，我想保存更改.

Once the rectangles are drawn on the image I would like to save the changes.

提前谢谢！

推荐答案

使用 getframe

img = imread('cameraman.tif');
fh = figure;
imshow( img, 'border', 'tight' ); %//show your image
hold on;
rectangle('Position', [50 70 30 60] ); %// draw rectangle on image
frm = getframe( fh ); %// get the image+rectangle
imwrite( frm.cdata, 'savedFileName.png' ); %// save to file

有关更多选项，请参见 矩形 关于绘制矩形.矩形的'Position'参数的格式为 [from_x from_y width高度] ，并且以像素为单位.

See rectanlge for more options on drawing rectangles. The 'Position' argument for rectangle is in format [from_x from_y width height] and is given in units of pixels.

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