Need for compressing the label by 20

NVlabs / PWC-Net

PWC-Net: CNNs for Optical Flow Using Pyramid, Warping, and Cost Volume, CVPR 2018 (Oral)

Other

1.64k stars 355 forks source link

Need for compressing the label by 20 #85

Open adhara123007 opened 5 years ago

adhara123007 commented 5 years ago

Dear Sir,

"We scale the ground truth flow by 20 and downsample it to obtain the supervision signals at different levels" is written in your paper . What was the need for scaling the ground truth?

Thanks and Regards, A.

jrenzhile commented 5 years ago

@adhara123007 because otherwise the magnitude of the flow is too big (and diverse in scale). This is a similar strategy in the flownet paper.

MakiseAsuka commented 2 years ago

@jrenzhile "Scale" here you mean scale down (/20) instead of scale up (*20) Am I correct?