mapillary / mapillary/OpenSfM

Generated Point Cloud has no colors

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#741 6 comments 0 reactions 0 assignees View on GitHub

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question sfm-reconstruction
Dominant language
Python
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Description

Hi everyone,
when generating a merged.ply file and open it with

import open3d as o3d
pcd = o3d.io.read_point_cloud('merged.ply')
print(pcd.colors)

it gives me

std::vector<Eigen::Vector3d> with 0 elements.
Use numpy.asarray() to access data.

Am I doing something wrong or does the point cloud come without colors?

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Research direction

Reproduce the reported behavior by generating merged.ply and reading it with Open3D using the example in the issue. Trace how merged.ply is generated in OpenSfM and determine whether color data is expected; done means confirming the intended behavior or identifying the missing color output.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
computer-vision
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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