使用Arkit中的VisionKit面对位置

Question

我添加了visionKit在arscnview上的face检测，它驾驶室检测脸，在这里我如何做我

    public func renderer(_ renderer: SCNSceneRenderer, updateAtTime time: TimeInterval) {
        
        let faceDetectionRequest = VNDetectFaceRectanglesRequest(completionHandler: { (request: VNRequest, error: Error?) in
            DispatchQueue.main.async {
                self.faceLayers.forEach { drawing in
                    drawing.removeFromSuperlayer()
                }
                if let observations = request.results as? [VNFaceObservation] {
                    self.handleFaceDetectionObservations(observations: observations)
                }
            }
        })
        
        guard let capturedImage = sceneView.session.currentFrame?.capturedImage else { return }
        let imageRequestHandler = VNImageRequestHandler(cvPixelBuffer: capturedImage, orientation: .leftMirrored, options: [:])

        do {
            try imageRequestHandler.perform([faceDetectionRequest])
        } catch {
            print("perform fail, error: ", error.localizedDescription)
        }
    }


    fileprivate func handleFaceDetectionObservations(observations: [VNFaceObservation]) {
        for observation in observations {
            
            let newWidth = sceneView.bounds.width * observation.boundingBox.width
            let newHeight = sceneView.bounds.height * observation.boundingBox.height
            let newX = sceneView.bounds.width * observation.boundingBox.origin.x
            let newY = sceneView.bounds.height * observation.boundingBox.origin.y
            let faceRectConverted = CGRect(x: newX, y: newY, width: newWidth, height: newHeight)
            
            let faceRectanglePath = CGPath(rect: faceRectConverted, transform: nil)
            
            let faceLayer = CAShapeLayer()
            faceLayer.path = faceRectanglePath
            faceLayer.fillColor = UIColor.black.cgColor
            self.faceLayers.append(faceLayer)
            self.sceneView.layer.addSublayer(faceLayer)
            
        }
    }

在这里唯一的问题是视图中的面部位置，它是计算错误。看来问题来自相机镜像，当右转时，面部矩形向左或脸部抬高时，矩形向下倾斜。我不知道如何进行正确的计算以将观察<代码> rect 与sceneView的正确位置联系起来。谁能帮我！ 在景观上也有同样的问题，矩形高度在那里更紧凑... 谢谢