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Factors that effect tracking stability

Discussion in 'AR' started by eco_bach, Apr 30, 2019.

  1. eco_bach

    eco_bach

    Joined:
    Jul 8, 2013
    Posts:
    1,601
    Getting frustrating tracking results in a recent ARFoundation project after over a month of hard work.

    My placed model often jumps erratically instead of staying glued to a fixed spot.

    So I am researching all the factors that effect tracking.
    Which of the following influences tracking stability?
    Are some more important than others?

    1-The actual complexity of your placed 3d model(number polygons etc)
    2- The complexity of the surrounding environment (ie thinks of being in an all white room with white floor and ceiling vs in the middle of a forest)
    3- The ambient lighting (overall lightness, diffuse vs direct)
    4- The time spent gathering tracking points-data before you place your model

    Other?
     
  2. newguy123

    newguy123

    Joined:
    Aug 22, 2018
    Posts:
    1,248
    2) an all white room will be harder to track because difficult to determine unique points/harder to track something since everything is the same. You need some kind of "texture" at least on the surfaces. A rough white wall will track easier than a smooth white wall
    3) brighter ambient works better
     
  3. BuoDev

    BuoDev

    Joined:
    Nov 28, 2018
    Posts:
    45
    From my notes...
    • High-contrast scenes with plenty of detail work best
    • Avoid dark places to reduce noise in the camera feed
    • Static environment lighting is most reliable
    • Avoid glossy surfaces
    • Avoid excessive contrast (eg. bright sunlight coming through windows into dark room)
    • Tracking surfaces with no detail (eg. a white wall) is not possible
    • Without any movement (parallax), tracking is not possible
    • Avoid too fast movement
    • Device specific camera/processing hardware makes a difference
    Kind of a lot of things to consider, but that's handheld AR. In typical cases these shouldn't be an issue.
     
  4. eco_bach

    eco_bach

    Joined:
    Jul 8, 2013
    Posts:
    1,601
    Thanks. Good tips!