IOS ML套件面部跟踪无法正常工作

人脸检测的跟踪Id在人脸不移动的情况下不断变化，我在ios中使用ML工具包，并遵循google的文档

文件：

这是我的密码：

func captureOutput(  _ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
         self.detectFaceMLKit(image: sampleBuffer)
}

注意：开始时跟踪id工作正常，但在id“10”左右后，它会丢失人脸跟踪，并开始为同一人脸提供多id，而不会在相机中移动人脸

过滤跟踪id后的输出样本：

trackingId:21 trackingId:21 trackingId:21 trackingId:21 trackingId:21 trackingId:21 trackingId:22 trackingId:22 trackingId:22 trackingId:22 trackingId:22 trackingId:23 trackingId:23 trackingId:23 trackingId:23 trackingId:23 trackingId:24 trackingId:24 trackingId:24 trackingId:24 trackingId:24

---

问题是imageOrientation，我将方向设置为仅在Xcode中纵向，但基于UIDeviceOrientation旋转图像，这是错误的，通过将imageOrientation设置为固定在.up位置来修复它

编辑： 此外，请确保不要像这样覆盖输出图像方向：

 private let videoDataOutput = AVCaptureVideoDataOutput()
 guard let connection = self.videoDataOutput.connection(with: AVMediaType.video),
            connection.isVideoOrientationSupported else { return }
 connection.videoOrientation = .portrait

    func imageOrientation(
        deviceOrientation: UIDeviceOrientation,
        cameraPosition: AVCaptureDevice.Position
    ) -> UIImage.Orientation {
        switch deviceOrientation {
        case .portrait:
            return cameraPosition == .front ? .leftMirrored : .right
        case .landscapeLeft:
            return cameraPosition == .front ? .downMirrored : .up
        case .portraitUpsideDown:
            return cameraPosition == .front ? .rightMirrored : .left
        case .landscapeRight:
            return cameraPosition == .front ? .upMirrored : .down
        case .faceDown, .faceUp, .unknown:
            return .up
        }
    }

 private let videoDataOutput = AVCaptureVideoDataOutput()
 guard let connection = self.videoDataOutput.connection(with: AVMediaType.video),
            connection.isVideoOrientationSupported else { return }
 connection.videoOrientation = .portrait