Hi,
I have a report from customer who has a Droid 4 running Gingerbread. When she loads my app, her camera becomes blurry/unfocused and it is not detecting/tracking the marker. It is blurry even on the screen as she looks at it.
When she puts the phone’s camera in regular mode to take pictures/video, it works fine and the image on her screen is clear.
We use default camera settings, i.e. we do not set any focus settings.
Is there a known issue?
Thanks,
Paulius
That worked, great!
So, the steps are:
That's it, you're done!
I tested this on my physical Samsung Galaxy S10+ and it worked. Thank you @RuhanBello, @syalanurag1991 and @NFGames!
| Attachment | Size |
|---|---|
 VuforiaFocus.txt | 727 bytes |
Hey I am having the same problem. Where do I add this code??
From the documentation given here:
https://library.vuforia.com/articles/Solution/Working-with-the-Camera#How-To-Use-the-Camera-Projection-Matrix
I created a script that looks like this:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Focus : MonoBehaviour {
// Use this for initialization
void Start () {
var vuforia = VuforiaARController.Instance;
vuforia.RegisterVuforiaStartedCallback(OnVuforiaStarted);
vuforia.RegisterOnPauseCallback(OnPaused);
}
private void OnVuforiaStarted(){
CameraDevice.Instance.SetFocusMode(
CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
}
private void OnPaused(bool paused){
if (!paused) // resumed
{
// Set again autofocus mode when app is resumed
CameraDevice.Instance.SetFocusMode(
CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
}
}
}
Now unity is giving an error like this:
error CS0103: The name `VuforiaARController' does not exist in the current context
Hi VirenderSingh!
I was having the same problem here building on my Zuk Z2 phone. I fixed it by adding the following line of code:
Vuforia.CameraDevice.Instance.SetFocusMode(Vuforia.CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
As you can see, the Vuforia framework does have an Singleton implementation for the Camera Device, so you can access it using the Instance field.
The CameraDevice does have a method to set the focus mode, which is "SetFocusMode". It receives an ENUM as a parameter, which is defined in "FocusMode".
TAKE CARE: do not add that line of code at the very beginning of the application as it can be dangerous. I was adding that line of code at some Awake() code and it didn't work. Then, I moved it out to some coroutine that waits a little BEFORE executing the code line, and now it works! Camera with focus OK!
The Continuous auto focus feature is only available starting at API level 9. Enabling this feature sometimes can slow down detection because the camera will be focusing. Setting the focus to Infinity works on this device as well.
I would try explicitly setting infinity focus or macro focus first to fix the issue for you use case. If this doesn't work try setting continuous focus.
Thank you,
-Peter
Hi Paulius,
I confirmed on this device that initially the image is out of focus. I also confirmed that setting continuous auto focus works on this device. You can set the camera focus mode to continuous which should work on Gingerbread or later devices if available (It doesn't always work on all devices).
Thank you,
-Peter
Works Perfectly! Thanks