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Model Target Not Appearing in Scene View

October 29, 2018 - 9:24am #1

I am trying to make an app for the HoloLens using model targets. After making a model target in the MTG and importing it into Unity, I am unable to see the model target in my scene view. Also, when I run the app on the HoloLens, no guide view appears. I also tried using the sample model target scene, but faced the same issue. All that appears in a blue bounding box around where my model should be.

On another review, I realized I'm getting two concerning messages when running the app:

"Model Targets are not supported by Digital Eyewear." (I thought you could use them for the HoloLens?)

"Failed to load data set XXXXXX." (No idea what's causing this).



I'm using Unity 2018.2.11 and Vuforia 7.2.23, and I'm using a very recent development key. Any advice at all would be appreciated!

 

 

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Model Target Not Appearing in Scene View

October 31, 2018 - 1:55pm #4

Hello,

Do you see the same behavior when running our Model Targets sample on HoloLens?

Here are some other things to be aware of when running Model Targets on HoloLens:

  • Using the 3D guide view is highly recommended for HoloLens
  • The HoloLens' RGB camera has an atypical field of view compared to typical mobile devices. Thus, a functioning guide view on a mobile device may be cropped on HoloLens. It is suggested that the guide view be repositioned to be "further away" (i.e. scaled down) due to this cropping.
  • The HoloLens web camera is a landscape-oriented display. Thus, it is recommended to specify "Landscape" when creating a guide view in the Model Target Generator
  • If you're observing that the position of your augmentation is not matching the expected camera movements during tracking, be sure to check the size of your printed targets. For optical see-through devices (such as HoloLens, ODG R7 and Epson BT-200), the printed target must match the dataset's target size exactly, as uploaded to the Target Manager. Recall that the Target Manager works exclusively in the units of meters.
  • For improving the registration accuracy of object overlay augmentations (when using Model Targets on HoloLens), it is recommended to use objects larger than “toys” (like the KTM bike or Viking Lander). Even in the current Unity Model Targets on HoloLens sample, the Viking Lander augmentation that is meant to directly overlay upon the physical target may not have exact registeration.

    There are a variety of factors that contribute to this offset, including user calibration and performance differences between HoloLens units, but as the objects become larger the registration accuracy should also improve.

Thanks,

Vuforia Engine Support

Model Target Not Appearing in Scene View

October 31, 2018 - 8:40am #3

Thanks for the response! I just created a new license key and added it to my app, and still have all the same issues. Any other ideas?

 

 

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Model Target Not Appearing in Scene View

October 29, 2018 - 2:51pm #2

Hello,

First thing to try is your license key. Suggest that you get a new free development key from the Vuforia Developer's Portal and integrate it into your app. This is likely the source of a few of your errors.

Note that Model Targets does not work with a Vufoia Classic license: https://developer.vuforia.com/vui/pricing

Thanks,

Vuforia Engine Support

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