Detecting face rects using CIDetector

EmotionDetectFile1.txt

func detectFaceIn(imageBuffer: CVImageBuffer) {
        let image = CIImage(cvImageBuffer: imageBuffer)
        
        let accuracy = [CIDetectorAccuracy: CIDetectorAccuracyHigh]
        let faceDetector = CIDetector(ofType: CIDetectorTypeFace, context: nil, options: accuracy)
        let faces = faceDetector?.features(in: image)
        let imageSize = CVImageBufferGetDisplaySize(imageBuffer)
        var actualRect = CGRect()
        for face in faces! {
            
            actualRect = CGRect(x: face.bounds.origin.x, y: imageSize.height - face.bounds.origin.y - face.bounds.height , width: face.bounds.width, height: face.bounds.height)
            
            // func which detect emotion using dlib points
            detectEmotionsIn(rect: actualRect, completion: { emotion in                
                
                let scaleX = UIScreen.main.bounds.width / imageSize.width
                let scaleY = UIScreen.main.bounds.height / imageSize.height
                
                let x = actualRect.origin.x * scaleX
                let y = actualRect.origin.y * scaleY
                let width = actualRect.width * scaleX
                let height = actualRect.height * scaleY
                
                let boundsRect = CGRect(x: x, y: y, width: width, height: height)
            })
        }
    }
    
    
    func detectEmotionsIn(rect: CGRect, completion: (String) -> ()) {
        
        if let cgImage = image.cgImage {
                let imageRef = cgImage.cropping(to: rect)
                
                if let imageRef = imageRef {
                    
                    let cropImage = UIImage(cgImage: imageRef, scale: image.scale, orientation: image.imageOrientation)
                    let resizedImage = resizeImage(image: cropImage, newWidth: 256)
                    
                    // pass resized image image to wrapper file
                    let points = wrapper?.doWork(onSampleBuffer: resizedImage, inRects: [NSValue(cgRect: CGRect(x: 0, y: 0, width: 256, height: 256))])
                    
                    let facePointsImage = circle(radius: 2, points: points!, image: resizedImage!)
                    
                }
            }
    }