Android Question Distance of object

[stari]

I wish to use the camera to measure the distance away of objects .
Does anyone have a solution?

 

[Pendrush]

You need wrapper for ARcore:

Quickstart for Android | ARCore | Google for Developers

Learn how to run sample applications written in Kotlin and Java to explore features of the ARCore SDK.

developers.google.com

 

[MikeSW17]

It will mostly depend on how distant and how accurately you want to measure distance. The link from @Pendrush (more specifically Depth Maps ) is quite limited in both. Recommended working distances of 0.5m-5.0m. And, Despite milimeter reporting, accuracy explanation is vague and hardware dependant.

Alternatively you need to know some facts (or estimations) and use trigonometry. If you know a dimension of the object you want to distance, it's height or width, then you can use the camera and devices angle sensors to record the top/bottom (or left/right) angles from the camera and with the known height/width trigonometry does the rest. Again accuracy will be limited by the device angle sensors and steadiness of the device but within those constraints, far greater distances can be measured.