Separable convolution layer


(Feras Almasri) #1

Is there a way to implement a separable convolution layer like the one in Tensor flow
https://www.tensorflow.org/api_docs/python/tf/layers/separable_conv2d


#2

I think you can use the group parameter from Conv2d.

groups controls the connections between inputs and outputs. in_channels and out_channels must both be divisible by groups.
At groups=1, all inputs are convolved to all outputs.
At groups=2, the operation becomes equivalent to having two conv layers side by side, each seeing half the input channels, and producing half the output channels, and both subsequently concatenated. At groups=in_channels, each input channel is convolved with its own set of filters (of size out_channels // in_channels).


(Feras Almasri) #3

I found this link but I can’t see how it could be implemented