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1-Visitor
October 23, 2020
Question

Model Target Vuforia

  • October 23, 2020
  • 1 reply
  • 4144 views

Hello, Using vuforia model target ,I want to detect a U shaped test tube and overlay some virtual objects in order to explain the chemical process happening inside the test tube.

But, as the test tube is transparent, its difficult to create a 3d model of it. Can anyone help me with this?

 

 

1 reply

21-Topaz I
October 23, 2020

Hi @AC_9685392 

In generally transparent object and or shining object are not appropriate to be used a model target. We need very sharp edges or tangency edges. Especially with object where there are no real edges but only tangent /silhouette edges ( tubes , cone, cylinder etc. ) and transparencies this will lead to problems

I think in such case we can use different models for target and for the augmentations. When for example you need to display some transparent tubes (test glass, tube) you can use for the target e.g. the non-transparent mount assembly etc.. In this case the 3D model (model widget) and the target model could be a different things.

The following information could be in this case helpful

Model Target Generator User Guide:

https://library.vuforia.com/content/vuforia-library/en/articles/Solution/model-target-generator-user-guide.html

Model Targets Supported Objects & CAD Model Best Practices

https://library.vuforia.com/content/vuforia-library/en/articles/Solution/model-targets-supported-objects.html

Optimizing Model Target Tracking

https://library.vuforia.com/content/vuforia-library/en/features/objects/model-targets/tracking-modes.html

 

5-Regular Member
October 23, 2020

Another appraoch is to generate a target from the stand. As @RolandRaytchev said transparent parts are difficult for computer vision to track.

 

We did recently release "car mode" for large shiny objects but unfortunately this won't fit your use case 

21-Topaz I
October 23, 2020

 OK- car model , this seem to be a new feature in the model target widget sinse 8.5.13. Thanks for the info , this a great enhancement!