AVFoundation Face не найден в ImageDetect?

Question

Я работаю с AVFoundation и ImageDetect библиотекой, которая дает обрезанные лица из изображения.Я запускаю видео с AV Session и устанавливаю таймер на 0,5 с, чтобы получить видеокадр как UIImage.Изображение отлично отображается при просмотре изображения, но когда я передаю это изображение в библиотеку ImageDetect, происходит случай .notFound. Я использую ту же библиотеку с ARKit рамкой сеанса, она работает нормально, но не работает в этом случае.

import UIKit
import AVFoundation
import ImageDetect

class ViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {     
    @IBOutlet weak var cameraView: UIView!

    @IBOutlet weak var imgvew: UIImageView!

    private var scanTimer: Timer?
    var captureSession  = AVCaptureSession()
    var sessionOutput =  AVCaptureStillImageOutput()
    var previewLayer = AVCaptureVideoPreviewLayer()
    var isBackCamera = true
    var clickedImage: Data?
    var captureDevice : AVCaptureDevice?

    var imagePicker : UIImagePickerController!

    override func viewDidLoad() {

    }

    override func viewWillAppear(_ animated: Bool) {
        if AVCaptureDevice.authorizationStatus(for: AVMediaType.video) ==  AVAuthorizationStatus.authorized {
            self.camera()
        } else {
            AVCaptureDevice.requestAccess(for: AVMediaType.video, completionHandler: { (granted :Bool) -> Void in
                if granted == true
                {
                    DispatchQueue.main.async {
                        self.camera()
                    }
                }
                else
                {
                   // self.showPermistionAlert()
                }
            })
        }

        // camera()
         scanTimer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(getImages), userInfo: nil, repeats: true)
    }

    func camera(){
        self.tabBarController?.tabBar.isHidden = true

        let devices = AVCaptureDevice.devices(for: AVMediaType.video)
        for device in devices{
            do{
                let camera = getDevice(position: .front)
                let input = try AVCaptureDeviceInput(device: camera!)

                if captureSession.canAddInput(input){
                    captureSession.addInput(input)
                    sessionOutput.outputSettings = [AVVideoCodecKey: AVVideoCodecJPEG]

                    if captureSession.canAddOutput(sessionOutput){

                        captureSession.startRunning()
                        captureSession.addOutput(sessionOutput)
                        previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
                        previewLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
                        previewLayer.connection?.videoOrientation = AVCaptureVideoOrientation.portrait

                        cameraView.layer.addSublayer(previewLayer)

                        previewLayer.position = CGPoint(x: self.cameraView.frame.width/2, y: self.cameraView.frame.height/2)
                        cameraView.contentMode = .scaleToFill
                        previewLayer.bounds = cameraView.frame
                    }
                }
            }
            catch{

                print("error")
            }
        }
    }

    @objc func getImages()
    {
        if let videoConnection = sessionOutput.connection(with: AVMediaType.video) {

            sessionOutput.captureStillImageAsynchronously(from: videoConnection, completionHandler: {buffer, error in

                let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(buffer!)

                let captureimage =  UIImage(data: imageData!)!
                self.imgvew.image = captureimage

                captureimage.detector.crop(type: .face) { result in
                    print(result)
                    switch result {
                    case .success(let faces):
                        print("Success")
                    case .notFound:
                        print("Notfound")
                    case .failure(let error):
                        print("Failure")
                    }
                }
            })
        }
    }

    func getDevice(position: AVCaptureDevice.Position) -> AVCaptureDevice? {
        let devices: NSArray = AVCaptureDevice.devices() as NSArray;
        for de in devices {
            let deviceConverted = de as! AVCaptureDevice
            if(deviceConverted.position == position){
                return deviceConverted
            }
        }
        return nil
    }

}