Kinect V2 UWP如何计算与用户的距离

using Microsoft.Kinect;
using System;

namespace KinectDistanceCalculation
{
    public sealed partial class MainPage : Page
    {
        private KinectSensor sensor;
        private DepthFrameReader depthFrameReader;

        public MainPage()
        {
            this.InitializeComponent();
            InitializeKinectSensor();
        }

        private void InitializeKinectSensor()
        {
            sensor = KinectSensor.GetDefault();
            if (sensor != null)
            {
                sensor.Open();

                depthFrameReader = sensor.DepthFrameSource.OpenReader();
                depthFrameReader.FrameArrived += DepthFrameReader_FrameArrived;
            }
        }

        private void DepthFrameReader_FrameArrived(object sender, DepthFrameArrivedEventArgs e)
        {
            using (DepthFrame depthFrame = e.FrameReference.AcquireFrame())
            {
                if (depthFrame != null)
                {
                    short[] depthData = new short[depthFrame.PixelDataLength];
                    depthFrame.CopyFrameDataToArray(depthData);

                    // 获取中心点的深度值
                    int centerX = depthFrame.FrameDescription.Width / 2;
                    int centerY = depthFrame.FrameDescription.Height / 2;
                    short depthValue = depthData[centerX + centerY * depthFrame.FrameDescription.Width];

                    // 计算距离
                    double distance = CalculateDistance(depthValue);
                    UpdateDistanceText(distance);
                }
            }
        }

        private double CalculateDistance(short depthValue)
        {
            // Kinect V2 的深度值单位为毫米
            // 距离计算公式：distance = (depthValue * constant) / focalLength
            double constant = 0.1236;
            double focalLength = 585.0;
            return (depthValue * constant) / focalLength;
        }

        private void UpdateDistanceText(double distance)
        {
            // 更新 UI 显示的距离
            DistanceTextBlock.Text = $"Distance: {distance:F2} meters";
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            if (sensor != null)
            {
                sensor.Close();
            }
            base.OnNavigatedFrom(e);
        }
    }
}