Concept clarification

[yug030]

[Course 4] CNN
What is the difference between 1*1 convolutions and pointwise convolutions?

Let’s say we have the input channels c1, c2, and c3, with all c as f*f tensors
and go through a 1 by 1 by 3 tensor [x1, x2, x3], with all x as scalars
Would both operations give c1x1+c2x2+c3x3, which is f by f by 1 ?

[Elemento]

Hey @yug030,
Please check this thread out. Let me know if this helps.

Cheers,
Elemento

[yug030]

It’s really helpful. Thank you!