MLKitFaceDetection Framework Reference

  • This documentation details globally available type definitions used for face detection within ML Kit.

  • Definitions include types for facial contours, landmarks, and detection modes (classification, performance, landmark, contour).

  • MLKFaceDetectionCallback is a block providing an array of detected faces or an error.

  • Each type definition provides its Objective-C declaration and a brief description of its purpose.

Type Definitions

The following type definitions are available globally.

  • The facial contours.

    Declaration

    Objective-C

    typedef NSString *MLKFaceContourType

  • A block containing an array of faces or nil if there’s an error.

    Declaration

    Objective-C

    typedef void (^MLKFaceDetectionCallback)(NSArray<MLKFace *> *_Nullable,
                                         NSError *_Nullable)

    Parameters

    faces

    Array of faces detected in the image or nil if there was an error.
    error

    The error or nil.

  • @enum FaceDetectorClassificationMode Classification mode for face detection.

    Declaration

    Objective-C

    typedef NSInteger MLKFaceDetectorClassificationMode

  • @enum FaceDetectorPerformanceMode Performance preference for accuracy or speed of face detection.

    Declaration

    Objective-C

    typedef NSInteger MLKFaceDetectorPerformanceMode

  • @enum FaceDetectorLandmarkMode Landmark detection mode for face detection.

    Declaration

    Objective-C

    typedef NSInteger MLKFaceDetectorLandmarkMode

  • @enum FaceDetectorContourMode Contour detection mode for face detection.

    Declaration

    Objective-C

    typedef NSInteger MLKFaceDetectorContourMode

  • The facial landmarks.

    Declaration

    Objective-C

    typedef NSString *MLKFaceLandmarkType