我正在使用ios 11视觉框架实时生成面部标志点.我能够获得面部标志点并使用面部标志点的UIBezierPath覆盖相机层.但是,我希望得到类似右下角的图片.目前我有一些看起来像左图,我试图循环点和添加中点,但我不知道如何从点生成所有这些三角形.我如何从左边的点开始生成右边的地图?
原文链接:https://www.f2er.com/swift/319375.html我不确定我能拿到所有的分数,而不是它会帮助太多,但我也从整个脸部的边界框中得到分数.最后,是否有任何框架可以让我认识到我需要的所有要点,比如openCV或其他什么,请告诉我.谢谢!
这是我从https://github.com/DroidsOnRoids/VisionFaceDetection开始使用的代码:
func detectLandmarks(on image: CIImage) { try? faceLandmarksDetectionRequest.perform([faceLandmarks],on: image) if let landmarksResults = faceLandmarks.results as? [VNFaceObservation] { for observation in landmarksResults { DispatchQueue.main.async { if let boundingBox = self.faceLandmarks.inputFaceObservations?.first?.boundingBox { let faceBoundingBox = boundingBox.scaled(to: self.view.bounds.size) //different types of landmarks let faceContour = observation.landmarks?.faceContour self.convertPointsForFace(faceContour,faceBoundingBox) let leftEye = observation.landmarks?.leftEye self.convertPointsForFace(leftEye,faceBoundingBox) let rightEye = observation.landmarks?.rightEye self.convertPointsForFace(rightEye,faceBoundingBox) let leftPupil = observation.landmarks?.leftPupil self.convertPointsForFace(leftPupil,faceBoundingBox) let rightPupil = observation.landmarks?.rightPupil self.convertPointsForFace(rightPupil,faceBoundingBox) let nose = observation.landmarks?.nose self.convertPointsForFace(nose,faceBoundingBox) let lips = observation.landmarks?.innerLips self.convertPointsForFace(lips,faceBoundingBox) let leftEyebrow = observation.landmarks?.leftEyebrow self.convertPointsForFace(leftEyebrow,faceBoundingBox) let rightEyebrow = observation.landmarks?.rightEyebrow self.convertPointsForFace(rightEyebrow,faceBoundingBox) let noseCrest = observation.landmarks?.noseCrest self.convertPointsForFace(noseCrest,faceBoundingBox) let outerLips = observation.landmarks?.outerLips self.convertPointsForFace(outerLips,faceBoundingBox) } } } } } func convertPointsForFace(_ landmark: VNFaceLandmarkRegion2D?,_ boundingBox: CGRect) { if let points = landmark?.points,let count = landmark?.pointCount { let convertedPoints = convert(points,with: count) let faceLandmarkPoints = convertedPoints.map { (point: (x: CGFloat,y: CGFloat)) -> (x: CGFloat,y: CGFloat) in let pointX = point.x * boundingBox.width + boundingBox.origin.x let pointY = point.y * boundingBox.height + boundingBox.origin.y return (x: pointX,y: pointY) } DispatchQueue.main.async { self.draw(points: faceLandmarkPoints) } } } func draw(points: [(x: CGFloat,y: CGFloat)]) { let newLayer = CAShapeLayer() newLayer.strokeColor = UIColor.blue.cgColor newLayer.lineWidth = 4.0 let path = UIBezierPath() path.move(to: CGPoint(x: points[0].x,y: points[0].y)) for i in 0..<points.count - 1 { let point = CGPoint(x: points[i].x,y: points[i].y) path.addLine(to: point) path.move(to: point) } path.addLine(to: CGPoint(x: points[0].x,y: points[0].y)) newLayer.path = path.cgPath shapeLayer.addSublayer(newLayer) }