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3 star rated page, recognition

September 4, 2017 - 4:48am #1

Hi Vuforia,


Thanks for these good and exciting tools.

My app struggles to recognize the target of the attachment "page_bad.pdf", even though it scores 3 stars on the augmentable rating, see "target_bad.jpg"

I have attached another example, "page_good.pdf" which also scores a 3 star augmentable rating, but recognition goes quite well in practise. I attached the target as well.


What makes "page_bad.pdf" so hard for my app to recognize, compared to "page_good.pdf"? It seems to have found a lot of markers on "page_bad.pdf".


Please let me know if you need more information.


Best regards,


PDF icon page_bad.pdf327.87 KB
Image icon targets_bad.jpg50.02 KB
PDF icon page_good.pdf119.08 KB
Image icon targets_good.jpg35.16 KB

3 star rated page, recognition

September 7, 2017 - 3:39pm #2

Hello Christian,

3 star rated Image Targets are not going to have the best detection and tracking. It is possible that the reason the bad image is getting worse detection is that the text sections of the image are causing repeated patterns. You could potentially improve the tracking of this image by cropping the section that is the Image Target to only include the image in the center and exclude the text at the top and bottom of the page.

For more information on tracking performance, refer to this article: https://library.vuforia.com/articles/Solution/Optimizing-Target-Detection-and-Tracking-Stability


-Vuforia Support

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