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ImageTarget tracking problem

By holo112 on Sun, 03/24/2019 - 14:07

Hi everyone, I'm using Vuforia with Unity and I try to track an ImageTarget( that with stones from Vuforia site). The problem is that sometimes (in 20-30% of  cases) it takes like 10-20 seconds to recognize the ImageTarget even if I put it very clearly in front of the camera. Other problem is when the ImageTarget disappears from the scene and reappears sometimes works perfectly sometimes not. Any suggestion why this is happening? (I'm new in Vuforia)

Hello,

This is unusual behavior. Detection should not take that long unless the device camera is of poor quality, or if the input image is blurred due to a lack of focus.

What device are you using?

Thanks,

Vuforia Engine Support

I used the laptop  webcam to test (720p webcam laptop:Lenovo Legion Y720) and after I deployed the application on a Huawei P20 lite and had the same result ( sometimes worked perfectly sometimes didn't detect at all). I dont understand why this happen, I add this code in the Defaul

Hello,

This could be related to your target and/or your environment. I suggest you start by reviewing best practices for your target to insure it is performant:

https://library.vuforia.com/articles/Solution/Optimizing-Target-Detection-and-Tracking-Stability

Moonshine

Fri, 04/12/2019 - 10:24

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@medabit

There is no problem detecting my ImageTarget but it jitters from time to time even the camera is close to ImageTarget (not too close of course).

Another question, if I have a printed image that has 28 cm that I want to use as a marker, what width I should set in the target manager for that image (0.28 ) ?

Hello @holo112,

Vuforia recommends that an Image Target's size match the printed materials. As meters are the Unity default scene units, a 28 cm printed image would be specified as 0.28 in the Target Manager.

Thanks,

Vuforia Engine Support

Saiganeshvorphy

Fri, 08/26/2022 - 07:22

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Hello i'm facing the same issue right now like if i remove the image target from the camera  model Disappears and when i place it again the animation of model plays from the middle (from the frame where i removed the Image target from camera how did you solve it....?<