Detailed information on 2D-BEV using bilinear sampling

[hitbuyi]

In the paper, little information is given on how to perform bilinear sampling during 2D-BEV transfer, anyone can explain it more detailedly?

[LiuLiu-55]

I also have this question

[xiaowhite-22]

I have the same question, do you have any new insights on this place?

[aharley]

Hi everyone,

Hope I can help.

It happens here: https://github.com/aharley/simple_bev/blob/main/nets/segnet.py#L420-L424

The key idea is: for each 3D coordinate in a volume, project that to the feature maps computed for the images, and take a bilinear sample from each one.

Please do ask more questions (at any level of detail) if there's more confusion.

Thanks, Adam

[PaulSudarshan]

@aharley Can you

Hi everyone,

Hope I can help.

It happens here: https://github.com/aharley/simple_bev/blob/main/nets/segnet.py#L420-L424

The key idea is: for each 3D coordinate in a volume, project that to the feature maps computed for the images, and take a bilinear sample from each one.

Please do ask more questions (at any level of detail) if there's more confusion.

Thanks, Adam

Hi @aharley , Can you share a simple diagram or an example of how the entire process works?