some questions about extracting I3D

[XiaoJian923]

Can you give me a copy of the source code for extracting I3D? Thank you very much.

[XiaoJian923]

could you tell me the specific meaning of 28 in the 3D features extracted in I3d (28, 10, 2048)

[tianyu0207]

28 means the number of snippets in a video. so each snippet contains 16 frames if you have 16 * 16 frames in a video. Then you will have 16 * 10 * 2048 features for this video and 10 means the 10-cropped features. You could extract features from any Resnet 50 version of the I3D backbone.
Thanks.