SparseConv2D Speed?

[danielmimimi]

Hey, thanks for the implementation - works well, also the example. My Question is, is there a speed gain vs the common Conv2d?

[mvoelk]

No, the aim is to apply convolution to incomplete input data.

[danielmimimi]

So is it rather slower of faster than the normal Conv2 operation in processing?
It was not clear in those 2 papers you mentioned, maybe you had more insight coding it?

[mvoelk]

There are other approaches that aim that. In the literature, the term "sparse convolution" is used in different ways, which may be confusing. I have no experience with these approaches, sorry...