---
title: VNFaceObservationAccepting
framework: vision
role: symbol
role_heading: Protocol
path: vision/vnfaceobservationaccepting
---

# VNFaceObservationAccepting

An image analysis request that operates on face observations.

## Declaration

```swift
protocol VNFaceObservationAccepting : NSObjectProtocol
```

## Overview

Overview This protocol allows you to provide an input collection of 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](vision/vnfaceobservationaccepting/inputfaceobservations.md)

## Relationships

### Inherits From

- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

### Conforming Types

- [VNDetectFaceCaptureQualityRequest](vision/vndetectfacecapturequalityrequest.md)
- [VNDetectFaceLandmarksRequest](vision/vndetectfacelandmarksrequest.md)