Vuforia Chalk Best Practices

To ensure your Chalk experience is the best, make sure to familiarize yourself with the below best practices.

Initialization

• Keep movement fluid and slow
• Forward and backward smooth motion is best to allow device to create mapping
• Small circles in front of the object are also good
  • Note: Do not rotate your device - keep the device's orientation fixed, moving it parallel to the object of interest and keeping the latter in view during initialization movement

Environment

• It is important for the environment to have a lot of saliency, interesting features, & textures
  • e.g. Stickers, buttons, cables, images/designs, shapes with corners, etc
• Stationary objects are best for Chalking
• Reflective, plain colored, or blank surfaces are not good for using Chalk Marks
• Well-lit areas are best for Chalk performance
  • If an environment is too dark the device's camera will not be able to detect objects
  • External light may be needed if the environment is too dark
    • Either user can toggle the flash on

Network/Bandwidth

• Low bandwidth will result in poor video quality
• Ensure that you have good bandwidth

Chalk Marks

• Use simple drawings to communicate instructions
• Circles, lines, & arrows work best
• Delete Chalk Marks that are no longer needed to reduce clutter
• Use the pause button to draw on a steady image