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OpenDriveLab / OpenLane

[ECCV 2022 Oral] OpenLane: Large-scale Realistic 3D Lane Dataset
Apache License 2.0
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Question about v1.2 label #52

Closed notabigfish closed 1 year ago

notabigfish commented 1 year ago

Hi, thanks for releasing v1.2 label files. I have one question about the relationship among "xyz", "visibility" and "uv".

In v1.1, for one single lane, sum(visibility) = len(xyz[visibility]) = len(uv) (pseudo python code). Therefore, each 3D point has its corresponding 2D point.

However, in v1.2, this relationship no longer exists. I found that sum(visibility) = len(xyz[visibility]) <= len(uv). If I want to find corresponding 3D and 2D points, should I use uv and reproject them to 3D coord, or use xyz and project them to 2D coord? Thanks!

RicardLee commented 1 year ago

Hi, there are no relation between uv and xyz[visibility]. Project the xyz to img coord may help it.