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# ARDepthData

An object that describes the distance to regions of the real world from the plane of the camera.

```
class ARDepthData
```

## Overview

This object contains the following depth information that the LiDAR scanner captures at runtime:

- Every pixel in the [`depthMap`](/documentation/ARKit/ARDepthData/depthMap) maps to a region of the visible scene ([`capturedImage`](/documentation/ARKit/ARFrame/capturedImage)), where the pixel value defines that region’s distance from the plane of the camera in meters.
- The [`confidenceMap`](/documentation/ARKit/ARDepthData/confidenceMap) property measures the accuracy of the corresponding depth data in [`depthMap`](/documentation/ARKit/ARDepthData/depthMap), and is useful in filtering out lower-accuracy depth values if an app’s algorithm required it.

[`ARWorldTrackingConfiguration`](/documentation/ARKit/ARWorldTrackingConfiguration) exposes this depth information in the [`sceneDepth`](/documentation/ARKit/ARFrame/sceneDepth) property which it updates every frame. To enable scene depth, add the [`sceneDepth`](/documentation/ARKit/ARConfiguration/FrameSemantics-swift.struct/sceneDepth) frame semantic to a world-tracking configuration’s [`frameSemantics`](/documentation/ARKit/ARConfiguration/frameSemantics-swift.property) and frames vended by the session contain [`ARDepthData`](/documentation/ARKit/ARDepthData) captured by the LiDAR scanner.

## Topics

### Depth Information

[`depthMap`](/documentation/ARKit/ARDepthData/depthMap)

The estimated distance from the device to its environment, in meters.

[`confidenceMap`](/documentation/ARKit/ARDepthData/confidenceMap)

The framework’s confidence in the accuracy of the depth-map data.

[`ARConfidenceLevel`](/documentation/ARKit/ARConfidenceLevel)

Degrees to which the framework is confident about depth-data accuracy.


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