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Question about the coordinate of ply pointcloud data #9

Open LZL-CS opened 2 months ago

LZL-CS commented 2 months ago

Hi @tsattler @ebrach , Thanks for your awesome work. I am confused about the coordinate of the .ply pointcloud data from the SfM-based pseudo ground truth (pGT) is OpenGL or OpenCV?

ebrach commented 2 months ago

Hi!

Sorry - we did this project a while ago :) What .ply files are you referring to?

Best, Eric

LZL-CS commented 2 months ago

Hi!

Sorry - we did this project a while ago :) What .ply files are you referring to?

Best, Eric

Hi, I mean the points3D.ply file after sparse reconstruction.

tsattler commented 2 months ago

I assume you generate this file using Colmap? If yes, then it uses computer vision camera coordinates (x-axis = right, y-axis = down, z-axis=forward).

LZL-CS commented 2 months ago

I assume you generate this file using Colmap? If yes, then it uses computer vision camera coordinates (x-axis = right, y-axis = down, z-axis=forward).

Hi @tsattler, thanks for your prompt reply. Yes, I am trying to use the 7Scenes colmap file for 3DGS, it should be OpenCV coordinate.