How to align OBJ model and fotos

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CR

• May 10, 2016 16:39

Hello,

I have a model (.obj) from blender that I want to texture with RC.
The mesh (with UV and light topo) comes originally from a laser scan, but I just have it as .ply, so I can not import it in RC.

I have problems to align the OBJ mesh and the fotos. Blende OBJ Exporter does not produce extra info file.

Any ideas how to solve the problem?

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• Official comment

  

  Wallace Wainhouse CR

  • April 12, 2022 05:49

  we now have a tutorial for this https://support.capturingreality.com/hc/en-us/articles/4408415049618-Using-a-model-made-by-a-handheld-scanner-in-RealityCapture

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  Wishgranter

  • May 10, 2016 22:04

  Hi Clemens Rudolph
  Isn’t it possible to import the original laser data in RC, set a proper CP workflow and get it done ?
  If not, then you need to reconstruct the model from images in RC ( set proper scale ) and register the laser scans with the RC results in an external application, then import it as an OBJ in RC and generate the texture...

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  CR

  • May 11, 2016 12:21

  Hey Wishgranter,
  
  I get the scandata pointcloud as .ply. That´s the output format I of scanner. I tried to change to E57 with CloudCompare but cloud not import in RC.
  
  If not then you need reconstruct model from images in RC ( set proper scale ) and register in external application the LS data to the RC results, then import as OBJ the LS data in RC and generate texture...
  
  What do you mean with "set propper scale"? How can change scale?
  
  Do you plan to make a .ply importer?
  Do you plan to scale objects in RC?
  
  Thank you for your help
  Clemens

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  CR

  • May 12, 2016 09:17

  I see now my imported pointcloud (e57 from cloud compare) ind the 3d window, but in 2d I only see black pictures.
  And align with fotos ist not working. The generated alignment is much bigger and it look like that the e57 pointcloud is not used.

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  CR

  • May 12, 2016 10:12

  Hm, the quality of the e57 ist very bad in RC. Why is this?

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  Lucia CR

  • June 13, 2016 11:28

  CR wrote:

  ... How can change scale? ... Do you plan to scale objects in RC? ...

  
  RealityCapture already supports scaling models - uniformly in all directions at the same time. In order to set size of a model, you need to define a distance between 2 control points and Update it or realign the model by clicking on Align Images (F6). To do so, it is recommended to define at least 2 control points in 2-5 images. The Update option changes solely the coordinate system of the currently selected component or model, whereas the Align Images (F6) button creates a new component.

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