---
title: HumanBodyPose3DObservation.EstimationTechnique
framework: vision
role: symbol
role_heading: Enumeration
path: vision/humanbodypose3dobservation/estimationtechnique
---

# HumanBodyPose3DObservation.EstimationTechnique

Constants that identify body height estimation techniques.

## Declaration

```swift
enum EstimationTechnique
```

## Topics

### Getting estimation techniques

- [HumanBodyPose3DObservation.EstimationTechnique.measured](vision/humanbodypose3dobservation/estimationtechnique/measured.md)
- [HumanBodyPose3DObservation.EstimationTechnique.reference](vision/humanbodypose3dobservation/estimationtechnique/reference.md)

## Relationships

### Conforms To

- [Decodable](swift/decodable.md)
- [Encodable](swift/encodable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Inspecting an observation

- [RequestDescriptor](vision/requestdescriptor.md)
- [bodyHeight](vision/humanbodypose3dobservation/bodyheight.md)
- [cameraOriginMatrix](vision/humanbodypose3dobservation/cameraoriginmatrix.md)
- [heightEstimationTechnique](vision/humanbodypose3dobservation/heightestimationtechnique.md)