Distance calculation.

[manika...@ivymobility.com]

Hi,

      I am using Camerax to capture my image, I want find the distance from camera to object it's either inbuild camerax or ARCore or MLKit. Trying to use ARFragment surface and arcore but couldn't find the distance. If implement ar core lib camera zoom and capture not working.

Code Snippet:

implementation "com.google.ar.sceneform.ux:sceneform-ux:1.15.0"
implementation 'com.google.ar:core:1.39.0'

arFragment = supportFragmentManager.findFragmentById(R.id.ar_fragment) as ArFragment

val imageAnalysis = ImageAnalysis.Builder()
.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
.build()
imageAnalysis.setAnalyzer(cameraExecutor, ImageAnalysis.Analyzer { image -> if (arFragment.arSceneView.session != null && arFragment.arSceneView.arFrame?.camera?.trackingState == TrackingState.TRACKING ) { // Perform hit test using ARFrame and image coordinates val hitResultList = arFragment.arSceneView.arFrame!!.hitTest( image.width / 2f, image.height / 2f ) if (hitResultList.isNotEmpty()) { val hitResult = hitResultList[0] val distance = hitResult.distance // Estimated distance in meters Log.d("Distance", "Estimated distance: $distance meters") } } image.close() })

[Xi Zhang]

Unfortunately, there is no support for ARCore + CameraX.  I think your best chance is using ARCore with camera2. 

As for detecting distance without ARCore, I don't think MLKit supports it. 

[Manikandan R]

Hi,

      Thanks for the reply.

Is there any other way to find distance using Camerax if available please share the sample.

Is it possible to use DepthAPI to find?.

We try to find distance using sensors but not deduct correctly.

Please suggest any default method or any other ways.

Thanks & Regards,

R. Manikandan

[Xi Zhang (张熹)]

I am not aware of a simple way to get depth with CameraX. camera2 does support a depth API but it requires 1) the device supports it and 2) the app uses camera2 API.

I think your best chance is using ARCore + camera2 like this tutorial.

[Manikandan R]

Ok, thanks for the reply. 

Thanks & Regards,

R. Manikandan