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Object Recognition of a invidudial large object

April 15, 2015 - 10:49am #1

Dear Vuforia Team,

is it possible to recognize a very big and individual object?
I have a screenshot attached using the Vuforia Scanner trying to scann that object with the provided A4 paper.

However the programm captures only about 20% of the object (see screenshot).

Is it possible to scann and track this large and indivudal (when it comes to the shape ob the object) toy? If yes, I would be happt to know how.
The object dimensions are 18.3 x 6.3 x 15.4 inches.

Thank you

Tom

AttachmentSize
Image icon Screenshot_Crane.jpg233.13 KB

Object Recognition of a invidudial large object

October 16, 2016 - 11:26pm #15

quyetnguyen wrote:

I get trouble wen my app only work with the 1st object target it track, if I re-run my app then track other object target, it works but not with the remain. Anyone please help me fix it to work with all object target be tracked! thank you so much!

check out this thread: https://developer.vuforia.com/forum/object-recognition/only-track-object-target-tracked-first-time

Object Recognition of a invidudial large object

October 13, 2016 - 1:14am #14

I get trouble wen my app only work with the 1st object target it track, if I re-run my app then track other object target, it works but not with the remain. Anyone please help me fix it to work with all object target be tracked! thank you so much!

Object Recognition of a invidudial large object

April 25, 2016 - 9:21am #13

The maximum recommended print size for the object scanning target is A3. Apologies, but we cannot support formats for printing larger sizes at this time.

Object Recognition of a invidudial large object

April 25, 2016 - 2:12am #12

Could you supply the object scanning target artwork as a vector image so we can try printing it off at a larger scale? The jpg that is linked on the website loses quality if we try to go much higher than A2 with it. 

Object Recognition of a invidudial large object

April 23, 2016 - 4:02am #11

Hi 

Did u get any solution for scanning bigger object???

Object Recognition of a invidudial large object

May 6, 2015 - 5:55am #10

Thank you guys. I just give it a try on a big objects such as open computer case, it works great as long as it have lot of features. 

Object Recognition of a invidudial large object

May 6, 2015 - 12:27am #9

As a rule of thumb (from my experience so far):
An object with the dimensions 14cm x 5cm x 4cm (like a bigger action figure) needs approximately 150 feature points from one site to achive good tracking results. I had a figure which had only 75 features in the front view - this was not enough for a stable tracking.

Have a look at this thread: https://developer.vuforia.com/forum/object-recognition/improve-initial-recognition

Object Recognition of a invidudial large object

May 5, 2015 - 3:48pm #8

You can scan big objects but they have to be featured, if the part of the object you are scanning does not have enough points and the target is not anymore in view you will lose your object easily in the capture app. If the object is created with just a few points it will not be a strong target in a object reco app.

Object Recognition of a invidudial large object

May 1, 2015 - 11:09am #7

Me too, getting issue when scanning the big object. It get lost easiy when you move away from scanning target.

 

How big is the size of the scanned objevct that the app still work? 

 

Thanks

Object Recognition of a invidudial large object

April 23, 2015 - 7:16am #6

Hi,

First of all think about printing the scan pattern to an A3 paper sheet. You have to scale the content by 137% later on.

I had some figures that also exceeded the upper right quadrant. I recognized that features get recorded, which exceed the upper and the right border of the pattern.

Object Recognition of a invidudial large object

April 22, 2015 - 11:28am #5

Place the object so everything is in that quadrant. It does not matter if the left most part of the object is not touching the ground.

Object Recognition of a invidudial large object

April 22, 2015 - 10:38am #4

Thank you for your reply, but how should I place my object in the upper right cudrant if its size exceeds this cudrant by far (see schreenshot) ?

Object Recognition of a invidudial large object

April 22, 2015 - 10:33am #3

Also note that your object should be placed entirely in the upper right cuadrant not only the base of it and the background should be a plain color one (e.g. white or gray)

Object Recognition of a invidudial large object

April 16, 2015 - 11:55pm #2

The crane has a lot of complexity and intricate parts that would be difficult to capture. See the "Supported Objects" section of the Object Reco guide for more info about ideal object targets:

https://developer.vuforia.com/library/articles/Training/Object-Recognition

 

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