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Target tracking issue with Microsoft HoloLens

December 22, 2016 - 2:04pm #1

We are trying to identify a target which is a shoe and attach a holographic marker to same. But we are seeing challenges with respect to consistently and steadily viewing the hologram on the physical object.  There seems to be variations due to lighting condition, distance and angle of viewing from the Microsoft HoloLens device which  is being used to  view and identify the target (Shoe).

The exact image(left & right side of the shoe) has been obtained from the product website and uploaded to Target Manager (.jpg file <2 MB size). When the image of the shoe is shown on a phone screen, the holographic marker is seen on the picture of the shoe but again only at  a certain distance and angle in a well lit room with fluorescent white light.

Any suggestions on how to improve the performance of the target tracking and recognition and integration with the Hololens is appreciated.

 

Should we be using a image target or an object target ?

 

Thanks

Vijay K

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Target tracking issue with Microsoft HoloLens

March 9, 2017 - 8:02am #6

Hello @medabit.

 

i saw your post and i wanted to ask you something. I am new to hololens and everything that deals with the hololens.

My docent wants me to combine real object with augmented objects so i come to the conclusion to use the object scanner. I want to know if i have to use the scanner tool with an android device or is the scanning-process also possible with the Hololens ?

 

Its important for my thesis i hope you can give me an answer

I appreciate it

 

Thank you!

Target tracking issue with Microsoft HoloLens

January 23, 2017 - 8:19am #5

Yes as noted in the mail. Stereo Tracking is very sensitive to that.

The printed marker should be in the right size.

 

This does not seem to apply for Android/ios

Target tracking issue with Microsoft HoloLens

January 23, 2017 - 7:33am #4

christop4D wrote:

Make sure your printed target has the same size as the ImageTarget size you specified in Unity.

More info here. I got good results using this approach, if your Vuforia marker gets 5 stars

https://developer.vuforia.com/forum/hololens/sample-has-no-stable-tracking

 

Hmm, the size in Unity is listed in meters, right?  Changing that didn't have an effect on my Android app, is it different for HoloLens?

Target tracking issue with Microsoft HoloLens

January 23, 2017 - 6:21am #3

Make sure your printed target has the same size as the ImageTarget size you specified in Unity.

More info here. I got good results using this approach, if your Vuforia marker gets 5 stars

https://developer.vuforia.com/forum/hololens/sample-has-no-stable-tracking

Target tracking issue with Microsoft HoloLens

January 6, 2017 - 5:45pm #2

Hello,

To clarify, you are using a 2D, planar image of a shoe as a target and are finding limitations in the distance and angle at which it can be detected?

All computer vision algorithms, including those running inside Vuforia, are influenced by environmental factors such as lighting, motion blur, distance to camera, etc. Additionally, the quality of a target, like those recognized by Vuforia, can be degradated by specular reflections - when a lighting source, reflecting off the surface of a target, introduces an occlusion of the features used to detect and track.

My suggestion is that during your testing, pay close attention to environmental factors that could be affecting performance.

Thanks.

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