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Detecting large objects

August 15, 2015 - 2:03am #8

Is it possible to track large objects (length = 1 m, width = 20 cm, height = 10 cm) with the normal A4 object scanning target or do i need to scale the object scanning target for this purpose?

Detecting large objects

August 19, 2015 - 5:41pm #7

Yes, you can try printing a larger version of the scanning target for your object. You can also position the larger object in the lower-left corner of the upper-right quadrant of the normal-sized sheet and then start the capturing with a good view of the tracking sheet pattern.

Detecting large objects

April 22, 2016 - 6:16am #6

@dm3d Do you have the scanning target as original artwork or Vector format so we can try printing it off in a larger scale?

Detecting large objects

May 5, 2016 - 1:08pm #5

I would like to scan a large object (a car) that I want to track. 

How I can use a car as 3d target object? Is this possible?


Detecting large objects

May 6, 2016 - 12:00pm #4

Technically, any rigid object, with sufficient surface features, can be scanned by Vuforia's Object Scanner tool, loaded into the SDK and detected.

The challenge with an object like an automobile is as follows:

  1. The object scanning target (a required element of the Object Scanner tool) needs to be proportionally sized to the car such that it can remain visibile and tracked by the tool during the scan. At this time, the largest recommended scanning target size is A3.
  2. A car's exterior surface is normally painted with a single color, and has smoothed surfaces as to reduced wind resistance. Both of these factors severly limit the number and distribution of features that can be extracted by the Object Sanner, which in-turn inhibits detection and robust tracking
  3. A car's exterior surface finish is normally glossed paint, which depending upon lighthing in your capture environment, can introduce specular reflections. Specular reflections during the scanning process may inhbit feature extraction (depending upon the number and size of the reflections). This can be reduced by using light boxes for smaller objects, but a car's size introduces new challenges for lighting environments during capture.

Hope this helps provide some perspective. It would be terrific to see this feature working on an automobile - please share if you are able to succesfully do it!


Detecting large objects

May 10, 2017 - 8:47am #3

2 and 3 are definitely things that end-developers can help work on.

1, frankly, is absurd for a viable AR SDK at this level of software maturity.

Detecting large objects

May 23, 2017 - 8:59am #2

What if I make a 3D thumbnail print of a real object. Would this work? Taking into consideration that 3D printing does not have an equal quality of colors and visual elements that exist in the real.

Detecting large objects

May 23, 2017 - 10:52am #1


@neoneper for your idea to be successful, it must be an accurate representation and to scale. The fact that the colors are not an exact matter doesn't matter as the tracker does not use the color channel. What does matter are that the colored parts are in the same location and of the same size.

Good luck and please respond with the results.


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