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# VNGenerateImageFeaturePrintRequest

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

```
class VNGenerateImageFeaturePrintRequest
```

## Overview

This request returns the feature print data it generates as an array of [`VNFeaturePrintObservation`](/documentation/Vision/VNFeaturePrintObservation) objects.

## Topics

### Scaling and Cropping Images

[`imageCropAndScaleOption`](/documentation/Vision/VNGenerateImageFeaturePrintRequest/imageCropAndScaleOption)

An optional setting that tells the algorithm how to scale an input image before generating the feature print.

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

Options that define how Vision crops and scales an input-image.

### Accessing the Results

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

The results of the feature print request.

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

An observation that provides the recognized feature print.

### Identifying Request Revisions

[`VNGenerateImageFeaturePrintRequestRevision1`](/documentation/Vision/VNGenerateImageFeaturePrintRequestRevision1)

A constant for specifying the first revision of the feature-print request.


---

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