VisionFaceDetector
class VisionFaceDetector : NSObject
A face detector that detects faces in an image.
-
Unavailable. Use
Vision
factory methods. -
Processes the given image for face detection. The detection is performed asynchronously and calls back the completion handler with the detected face results or error on the main thread.
Declaration
Swift
func process(_ image: FIRVisionImage, completion: @escaping VisionFaceDetectionCallback)
Parameters
image
The vision image to use for detecting faces.
completion
Handler to call back on the main thread with faces detected or error.
-
Returns detected face results in the given image or
nil
if there was an error. The detection is performed synchronously on the calling thread.It is advised to call this method off the main thread to avoid blocking the UI. As a result, an
NSException
is raised if this method is called on the main thread.Declaration
Swift
func results(in image: FIRVisionImage) throws -> [FIRVisionFace]
Parameters
image
The vision image to use for detecting faces.
error
An optional error parameter populated when there is an error during detection.
Return Value
Array of faces detected in the given image or
nil
if there was an error.