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What is dilated convolution?

I'm trying to create a convolutional model and saw a dilation rate. what does it mean? what is dilated convolution?

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Dilated or atrous convolution is the same convolution, only with pixel skipping.

If you remember how regular convolution works, then dilated convolution skips pixels with 2 diraction: width and hight and as a result it takes much bigger part of the image for every step of the convolution.

If you put dilation rate 2, then it will take 2 times bigger part of the image for every step. it will take every second pixel of that part

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