---
title: MLImageClassifier.CustomFeatureExtractor
framework: createml
role: symbol
role_heading: Structure
path: createml/mlimageclassifier/customfeatureextractor
---

# MLImageClassifier.CustomFeatureExtractor

A custom feature extractor a training session uses to train an image classifier.

## Declaration

```swift
struct CustomFeatureExtractor
```

## Topics

### Creating a custom feature extractor

- [init(modelPath:outputName:)](createml/mlimageclassifier/customfeatureextractor/init(modelpath:outputname:).md)

### Configuring a custom feature extractor

- [modelPath](createml/mlimageclassifier/customfeatureextractor/modelpath.md)
- [outputName](createml/mlimageclassifier/customfeatureextractor/outputname.md)

## Relationships

### Conforms To

- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Supporting types

- [MLImageClassifier.DataSource](createml/mlimageclassifier/datasource.md)
- [MLImageClassifier.ModelParameters](createml/mlimageclassifier/modelparameters-swift.struct.md)
- [MLImageClassifier.FeatureExtractorType](createml/mlimageclassifier/featureextractortype.md)
- [MLImageClassifier.ImageAugmentationOptions](createml/mlimageclassifier/imageaugmentationoptions.md)