Model Target Best Practices
The following are best practices we recommend you follow when working with Model Targets in Vuforia Studio.
For more information about optimizing Model Target performance, see
Optimize Model Target Tracking in the Vuforia Engine Developer Portal.
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Desired Model Characteristics
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The model:
• Should contain a maximum of 20 parts
• Should contain a maximum of 5 textures
• Should use a right-hand coordinate system
• Should NOT contain moveable or flexible parts
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Match the Model to Physical Object
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Ensure that the 3D model matches the real-world physical object exactly. If the scale of the 3D model is different than the real-world model, tracking may not work well.
We recommend maintaining an exact 1:1 scale between the physical object and the 3D model at all times.
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There may be cases where the scale of the 3D model would purposely not match the physical object.
• When testing your Model Target with a scaled replica of the real-life object (for example, a to-scale model car)
• When the 3D model’s dimensions are pre-set and are different from the real-life object, or the unit information of the model is unknown.
In these cases, the correct physical size of the target could be configured at runtime.
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Model Colors
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It’s recommended that surfaces of the model have different colors to allow for more features to be recognized. Changing the color of the surfaces of the model can be done prior to importing your model into Vuforia Studio. For more information, see Automatic Coloring of Model Targets in the Vuforia Developer Library. |
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Model Detail
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You’ll want to ensure that the model is detailed enough, as geometric complexity is key to distinguish an object from other shapes in the environment. Simple shapes such as cubes, spheres, or very elongated simple shapes may be easily confused with other objects in the user’s setting.
Try to base your experience on products or objects that have enough sharp edges, dents, bulges, etc. It’s recommended that you avoid symmetric objects, because the Model Target tracker will not be able to differentiate between the different sides. Additionally, repeated parts, such as identical extrusions on a surface, can further cause confusion for detection and tracking.
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