Eltwise1 and 2 SUM or PROD

[pedropgusmao]

Hello, I am trying to replicate the results for FlowNetS with Tensorflow starting from the train.prototxt. I am a bit puzzled about the Eltwise1 layer that has an operation SUM with coeff 0.00392156862745, which looks a lot like 1/255. Shouldn’t this operation be PROD instead of SUM? The same goes to Eltwise2 layer.

Thanks in advance

[nikolausmayer]

The convention can be confusing, but SUM is correct here: The PROD operation in Eltwise does elementwise multiplication of 2 bottom blobs. The SUM op linearly scales a bottom blob by the SUM coefficient.

[pedropgusmao]

Thanks!