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DTU dataset coordinate system? #2

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sagniklp opened this issue Jan 6, 2021 · 1 comment
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DTU dataset coordinate system? #2

sagniklp opened this issue Jan 6, 2021 · 1 comment

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@sagniklp
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sagniklp commented Jan 6, 2021

In the loader for dtu dataset there is a coordinate transform step.
Does it use the Blender coordinate system or OpenCV?
@sxyu
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sxyu commented Jan 6, 2021 •
edited

Hi Sagnik,
Good question. We (quite arbitrarily) used a x right, y up, z out RH coordinated system for camera space. Since DVR uses the OpenCV system x right, y down, z in, I adjust the camera pose matrix by a similarity transform flipping y,z axes.
The world space is the original DTU coordinate system (up to scaling) from the scanning system, which is right-handed but not really axis-aligned I think.

@xingyi-li xingyi-li mentioned this issue Mar 28, 2021
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@sagniklp @sxyu