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# VNClassifyImageRequest

A request to classify an image.

```
class VNClassifyImageRequest
```

## Overview

This type of request produces a collection of [`VNClassificationObservation`](/documentation/Vision/VNClassificationObservation) objects that describe an image. Access the classifications through [`knownClassifications(forRevision:)`](/documentation/Vision/VNClassifyImageRequest/knownClassifications(forRevision:)).

## Topics

### Accessing Results

[`supportedIdentifiers()`](/documentation/Vision/VNClassifyImageRequest/supportedIdentifiers())

Returns the classification identifiers that the request supports in its current configuration.

[`results`](/documentation/Vision/VNClassifyImageRequest/results)

The results of the image classification request.

[`VNClassificationObservation`](/documentation/Vision/VNClassificationObservation)

An object that represents classification information that an image-analysis request produces.

[`knownClassifications(forRevision:)`](/documentation/Vision/VNClassifyImageRequest/knownClassifications(forRevision:))

Requests the collection of classifications that the Vision framework recognizes.

### Specifying Algorithm Revision

[`VNClassifyImageRequestRevision1`](/documentation/Vision/VNClassifyImageRequestRevision1)

A constant for specifying the first revision of the image-classification request.


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