Xcode9学习笔记83

    override func viewDidLoad() {        super.viewDidLoad()        // Do any additional setup after loading the view, typically from a nib.                self.view.backgroundColor = UIColor.black        let image = UIImage(named: "Pic6")        let imageView = UIImageView(image: image)        imageView.center = CGPoint(x: 185, y: 260)//设置中心点坐标        self.view.addSubview(imageView)                let ciImage = CIImage(image: image!)        let ciContext: CIContext = { return CIContext(options: nil) }()        let ciDetector = CIDetector(ofType: CIDetectorTypeFace, context: ciContext, options: [CIDetectorAccuracy : CIDetectorAccuracyHigh])                let ciImageSize = ciImage!.extent.size        var transform = CGAffineTransform.identity        transform = transform.scaledBy(x: 1.0, y: -1.0)        transform = transform.translatedBy(x: 0, y: ciImageSize.height * -1)                let features: [CIFeature]! = ciDetector!.features(in: ciImage!)        for feature in features {            let frame = feature.bounds.applying(transform)            let faceView = UIView(frame: frame)            faceView.layer.borderWidth = 2            faceView.layer.borderColor = UIColor.white.cgColor            imageView.addSubview(faceView)        }    }