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PeidongLi / DualBEV

[ECCV 2024] The official implementation of DualBEV
Apache License 2.0
42 stars 2 forks source link

questions about gt_bev_mask's generate #3

Open c-yyyy opened 3 months ago

c-yyyy commented 3 months ago

Great works! But I have some questions,as the picture shows, what is the purpose of these flip and rotate operation? why we need them? I'm quite confused ,looking forward to the author's answer,thanks! image

wcshen commented 2 months ago

The result of GetBEVMask is the supervision signal for BEV Features. After cv2.fillPoly(), the coordinate system of the numpy matrix differs from that of the BEV features, requiring us to transform it to match the BEV feature coordinate system.