How to combine model from lidar and photogrammetry for textures ?

[cyrilp]

Hi,

I have a difficult subject to scan (an old car) where i can’t get a good model with photogrammetry.

If i have a model from a Lidar how can i use my photos to texture that model ?

Thanks

[Bzuco]

I would try to create as goog as possible model with photogrametry to obtain camera positions and then swap that model with lidar model and try to manually align it or automatically if metashape can do that. Not sure if the texture result would be satisfactory, because bad model comes from bad camera positions.

[Paulo]

Hi cyrilp,

you could just place a few markers on the Lidar model (recognizable features) and then mark them on the photos and after  camera alignment, use update transform to align the photos to model see https://agisoft.freshdesk.com/support/solutions/articles/31000151726-how-to-import-external-point-cloud-e-g-lidar-to-metashape

Then the texture should come out fine...

[cyrilp]

Hi,
Thanks a lot. My lidar point cloud is E57 from a Leica rtc 360 and includes pictures.

Is there a way to use those pics for texture ?

Thanks

[Paulo]

I think so, but you should look at https://agisoft.freshdesk.com/support/solutions/articles/31000159101-terrestrial-laser-scanning-data-processing for combining TLS with photos...