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# VNFaceObservationAccepting

An image analysis request that operates on face observations.

```
protocol VNFaceObservationAccepting : NSObjectProtocol
```

## Overview

This protocol allows you to provide an input collection of [`VNFaceObservation`](/documentation/Vision/VNFaceObservation) objects as part of a request. Request objects adopt this protocol to request additional information about detected faces, such as facial landmarks.

## Topics

### Providing Face Observations

[`inputFaceObservations`](/documentation/Vision/VNFaceObservationAccepting/inputFaceObservations)

An array of [`VNFaceObservation`](/documentation/Vision/VNFaceObservation) objects to process as part of the request.


---

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