My image is not being tracked and the camera is out of focus

🌵 Needle Engine
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NODO
NODO1080×1917 156 KB

This is the imagen, is there anyway to improve that, cause’ I can’t change o modify the imagen

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Hi Salia,

To address the issue of your image not being tracked and the camera being out of focus, you can consider the following steps:

  1. Check Camera Settings: Ensure that your camera settings (like focal length, exposure, and focus mode) are configured correctly. Use autofocus if available, and ensure the camera is capturing at the right distance.

  2. Lighting Conditions: Make sure that the image is well-lit. Poor lighting can impact tracking performance. Consider increasing ambient light or using directional lighting to highlight the image.

  3. Image Quality: Ensure that the image is high contrast and clear. If the image is blurry or low quality, tracking may fail.

  4. Marker Design: If the image is a marker for tracking (like a QR code or AR marker), ensure that it has enough distinct features for tracking algorithms to identify.

  5. Tracking Algorithms: Check the implementation of the tracking algorithms used in your application. If you are using Needle Engine, ensure it is correctly set up to recognize the image using WebXR capabilities.

  6. Debugging: Use debugging tools to monitor the tracking status. Check for any error messages regarding tracking in the console.

  7. Focus Adjustment: If your camera cannot focus correctly, try adjusting the physical focus or using software control if supported.

If you provide more specific details about your setup, such as the version of Needle Engine or your camera specifications, I can offer more tailored advice. Additionally, you may want to consult the documentation for the tracking features related to image recognition.

Here are some useful resources:

Let me know if you need further assistance!

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Hi, what device are you using? And is it iOS or Android?

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Hi! sorry in advanced if this has been answered and addressed, although I’ve been looking for this issue and I couldn’t find a final conclusion.

I’m having exactly the same issue. But the weird thing is that I only have the problem with needle engine not with the ARKit and Unity itself. Sharing here 2 recordings, first one is a really basic app I created just in Unity using ARKit and ARCore, the second one is the one from Needle.

  • The one from ARCore : webcam perfect image, no issues, no image out of focus for close objects, tracking in movement perfect
  • The Needle one : image with the close objects blurred, meaning that the tracking image is itseld a bit blurry, further objects well defined, when it finds the tracking image it places the 3D content and stays there, meaning if I move the tracking image the 3d Content don’t follow me.

The target image is exactly the same, the light conditions as well and the paper I’m using is the same. It’s weird, but when the camera gets activated via Needle it looks like applying some kind of settings on distance and focus point… don’t know really how it works, just trying to describe the effect :sweat_smile: As well, it should follow the tracking of the paper while moving, but it’s not doing it.

I’m using a Samsung galaxy S20, Android 13 and I set the flag in the browser WebXR Incubations.

Any idea on how can I make this work ? Maybe I’m missing something ?

Thanks a lot!!

With_Unity_ARCore_ARKit

With_Neddle

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Hello Jose,

could you share a link to your project so we can look at it from our side?

Thank you

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Hi! I’m sharing here the link to a folder I created in my GDrive. I didn’t know exactly what and how should I share this (I’m not storing this in Github).

In theory you should be able to download it. In any case, it’s quite simple. I just duplicated the project from the Examples (the one of the image tracking) and replaced the image used for tracking (as well I adjusted the width of the image).

Please, let me know if you need anything else. BTW, my Unity version is 6000.0.58f1

Thanks a lot for looking into this. :blush:

PS: this is the link to the needle cloud : https://imagetracking-13sqjk1orfyf-z708tk.needle.run/ in case you want to try it with the image

hiro
hiro512×512 5.63 KB

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Hi Jose,

the issue seems to be caused by the marker image itself - it has too little detail.

Is there a specific reason why you want to use the Hiro marker ? (you can use any image basically with enough detail to be tracked). If this is just for testing please try with a different image for tracking and it should work fine.

As a hack for this specific marker image is that adding a minimal amount of noise will make it work. - but my guess is that you’ve been just testing here and using a marker with enough detail by itself will work normally. (The hiro marker is afaik not great for image tracking in general)

Here’s a demo with the hack:

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Oh wow! I never thought that could be the problem. I tested it with your version and it works with the new image.

I chose that image because of its simplicity and the b&w constrast. I thought it was going to be the best option, but clearly it wasn’t at all, and as well the quality of the printed imaged was poor.

Thanks a lot for this, and from now on I’ll be much more careful on the images I use for tracking. :sweat_smile:

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