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wzmsltw / BSN-boundary-sensitive-network

Codes of our paper: "BSN: Boundary Sensitive Network for Temporal Action Proposal Generation"
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step in extracting frames from video #9

Closed ZENGXH closed 6 years ago

ZENGXH commented 6 years ago

Hi Tianwei,

I would like to ask for the -s(step) setting you used in this command.

Did you change the -s 1 to -s 8 or -s 16? If not, how do you skip the sampling of frames?

Thanks! ;)

wzmsltw commented 6 years ago

Hi @ZENGXH , I did not use optical flow codes from cuhk. I use https://github.com/feichtenhofer/gpu_flow for flow extraction. And for here, actually I think "-s 1" should be used. During extracting feature on ActivityNet, we set each 16 frames as a snippet, and we calculate 5 frames using 6 consecutive frames in the middle of snippet. Thus it should be -s 1.