Vision normalized rectangle detection projection in Swift

RectangleObservationProjection.swift

func observationToRect(box:VNRectangleObservation)->CGRect
{
    let xCord = box.topLeft.x * imageView.frame.size.width
    let yCord = (1 - box.topLeft.y) * imageView.frame.size.height
    let width = (box.topRight.x - box.bottomLeft.x) * imageView.frame.size.width
    let height = (box.topLeft.y - box.bottomLeft.y) * imageView.frame.size.height
    
    return CGRect(x: xCord, y: yCord, width: width, height: height)
}


func observationToRect2(box:VNRectangleObservation)->CGRect
{
    let bbBox = box.boundingBox
    var bottomToTopTransform = CGAffineTransform(scaleX: 1, y: -1).translatedBy(x: 0, y: -1)
    let rect = bbBox.applying(bottomToTopTransform)
    return VNImageRectForNormalizedRect(rect, Int(imageView.image!.size.width), Int(imageView.image!.size.height))
}