I3D feature extraction change of size

[KarolyneFarfan]

Hello, thank you for your work.

I have a question, the output for RGB and flow, extracted separately, ¿could be concatenated to form a vector with size 2048?, as many models for action classification use. ¿Are the outputs processed to perform this operation or there any process you suggest i should follow?

Thank you in advance

[v-iashin]

hi, thanks!

i don't know if concatenation requires the features to be preprocessed somehow differently.

the lib will simply output two tensors: one from flow, the other from RGB. feel free to experiment with it

[KarolyneFarfan]

Thank you for your fast answer, but I do have another question: from which layer are the features extracted, and what is the process you follow afterwards? Sorry for asking so many questions.

[v-iashin]

https://v-iashin.github.io/video_features/models/i3d/

No worries. It is all there.

Alternatively, you may take a look at the source code:

video_features/models/i3d/i3d_src/i3d_net.py

Line 259 in 1b67c9f

if features: