Class

CIFeature

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

Declaration

@interface CIFeature : NSObject

Overview

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

Topics

Feature Properties

bounds

The rectangle that holds discovered feature.

type

The type of feature that was discovered.

Feature Types

CIFeatureTypeFace

The discovered feature is a person’s face.

CIFeatureTypeRectangle

The discovered feature is a rectangular object, though it might appear in perspective in the image.

CIFeatureTypeQRCode

The discovered feature is a Quick Response code (2D barcode).

CIFeatureTypeText

The discovered feature is a region likely to contain upright text.

Relationships

Inherits From

See Also

Image Feature Detection

CIDetector

An image processor that identifies notable features (such as faces and barcodes) in a still image or video.

CIFaceFeature

Information about a face detected in a still or video image.

CIRectangleFeature

Information about a rectangular region detected in a still or video image.

CITextFeature

Information about a region likely to contain text detected in a still or video image.

CIQRCodeFeature

Information about a Quick Response code (a kind of 2D barcode) detected in a still or video image.