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# CIFeature

The abstract superclass for objects representing notable features detected in an image.

```
class CIFeature
```

## Overview> Note: In macOS 10.13, iOS 11, and tvOS 11 or later, the Vision framework replaces these classes
> for identifying and analyzing image features.
> See <doc://com.apple.documentation/documentation/Vision/VNObservation>)

A `CIFeature` object represents a portion of an image that a detector believes matches its criteria.
Subclasses of CIFeature holds additional information specific to the detector that discovered the feature.

## Topics

### Feature Properties

[`bounds`](/documentation/CoreImage/CIFeature/bounds)

The rectangle that holds discovered feature.

[`type`](/documentation/CoreImage/CIFeature/type)

The type of feature that was discovered.

### Feature Types

[`CIFeatureTypeFace`](/documentation/CoreImage/CIFeatureTypeFace)

A Core Image feature type for person’s face.

[`CIFeatureTypeRectangle`](/documentation/CoreImage/CIFeatureTypeRectangle)

A Core Image feature type for rectangular object.

[`CIFeatureTypeQRCode`](/documentation/CoreImage/CIFeatureTypeQRCode)

A Core Image feature type for QR code object.

[`CIFeatureTypeText`](/documentation/CoreImage/CIFeatureTypeText)

A Core Image feature type for text.


---

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