Similarity between bordermode and zero padding in Keras

Question

In Keras, the border_mode = 'valid' doesn't zero pad the input. Thus, we subsequently get an output feature map that is not the same size as the input. Likewise, setting border_mode = 'same' gives output feature maps as the input. My question is if we set border_mode = 'same', should we also perform zero padding using the zero_padding function?

Answer 1

I think I found the answer to this here https://github.com/fchollet/keras/issues/1984. If the stride is 1, border_mode = 'same' does the job of padding to ensure that the output feature maps are the same size as the input.