How to draw a white border around an image(or a group of images in a folder)
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I have an image :-
![](/matlabcentral/answers/uploaded_files/74004/001bin.jpg)
Now i want to draw a white border around the image,such that i get this:-
![](/matlabcentral/answers/uploaded_files/74005/001bin.jpg)
How can i do this.Please help.
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回答(1 个)
Image Analyst
2017-4-1
Use padarray():
padsize = 1;
padvalue = 255; % or 1 if image is single, double, or logical.
paddedImage = padarray(originalImage, padsize, padval);
3 个评论
Image Analyst
2017-4-1
Then just write it in yourself
grayImage(:, 1) = 255; % Make left column white.
grayImage(:, end) = 255; % Make right column white.
grayImage(1, :) = 255; % Make top row white.
grayImage(end, :) = 255; % Make bottom row white.
另请参阅
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在 Help Center 和 File Exchange 中查找有关 Image Processing Toolbox 的更多信息
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