How can i use zero-padding in an image?

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Gn Gnk
Gn Gnk 2020-10-13
评论： Image Analyst 2020-10-13
Hello ,
I have an image(512x512) and i want to do zero-padding in order to covolute it with a filter .
The problem here is that i dont know how to do that ,meaning that i dont know where the zeros should be (around the image or next to it) and furthermore the size of the zero-padding.
Any help would be valuable.

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采纳的回答

Image Analyst
Image Analyst 2020-10-13
There is a built-in function for that. It's called padarray().
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更多回答（1 个）

Ameer Hamza
Ameer Hamza 2020-10-13
编辑：Ameer Hamza 2020-10-13
You don't need to do padding yourself. imfilter(): https://www.mathworks.com/help/images/ref/imfilter.html automatically does it based on the option you pass
filtered_image = imfilter(img, fil, 'same')
If you want to understand the concept behind it, then this link might be helpful: https://machinelearningmastery.com/padding-and-stride-for-convolutional-neural-networks/
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Gn Gnk
Gn Gnk 2020-10-13
Thank you for your quick response . I am familiar with imfilter() but i actually want to do this process by myself , thats why i am really confused.

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