---
title: VNGenerateImageFeaturePrintRequest
framework: vision
role: symbol
role_heading: Class
path: vision/vngenerateimagefeatureprintrequest
---

# VNGenerateImageFeaturePrintRequest

An image-based request to generate feature prints from an image.

## Declaration

```swift
class VNGenerateImageFeaturePrintRequest
```

## Overview

Overview This request returns the feature print data it generates as an array of VNFeaturePrintObservation objects.

## Topics

### Scaling and Cropping Images

- [imageCropAndScaleOption](vision/vngenerateimagefeatureprintrequest/imagecropandscaleoption.md)
- [VNImageCropAndScaleOption](vision/vnimagecropandscaleoption.md)

### Accessing the Results

- [results](vision/vngenerateimagefeatureprintrequest/results.md)
- [VNFeaturePrintObservation](vision/vnfeatureprintobservation.md)

### Identifying Request Revisions

- [VNGenerateImageFeaturePrintRequestRevision1](vision/vngenerateimagefeatureprintrequestrevision1.md)

## Relationships

### Inherits From

- [VNImageBasedRequest](vision/vnimagebasedrequest.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Still-image analysis

- [Detecting Objects in Still Images](vision/detecting-objects-in-still-images.md)
- [Classifying images for categorization and search](vision/classifying-images-for-categorization-and-search.md)
- [Analyzing Image Similarity with Feature Print](vision/analyzing-image-similarity-with-feature-print.md)
- [VNRequest](vision/vnrequest.md)
- [VNImageBasedRequest](vision/vnimagebasedrequest.md)
- [VNClassifyImageRequest](vision/vnclassifyimagerequest.md)
- [VNFeaturePrintObservation](vision/vnfeatureprintobservation.md)
- [VNImageRequestHandler](vision/vnimagerequesthandler.md)
- [VNObservation](vision/vnobservation.md)