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Getting the most of Kinect SDK in C# - Part 2 of ?: ImageStreams

, 6 Jan 2012 Ms-PL
A series about experimenting with Kinect for Windows SDK.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Research.Kinect.Nui;

namespace JK.KinectExperiments.ImageStreamTest
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        Runtime CurrentRuntime;
        InteropBitmapHelper imageHelper;
        
        PlanarImageHelper pih = null;
        Byte[] bg = new Byte[1280 * 1024 * 4];
        
        
        public MainWindow()
        {
            InitializeComponent();
            CurrentRuntime = Runtime.Kinects[0];
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            CurrentRuntime.Initialize(
                RuntimeOptions.UseDepthAndPlayerIndex

                                        | RuntimeOptions.UseSkeletalTracking
                                        | RuntimeOptions.UseColor
                                        );

            CurrentRuntime.VideoStream.Open(ImageStreamType.Video, 2, ImageResolution.Resolution640x480, ImageType.Color);
            CurrentRuntime.DepthStream.Open(ImageStreamType.Depth, 2, ImageResolution.Resolution320x240, ImageType.DepthAndPlayerIndex);


            CurrentRuntime.VideoFrameReady += new EventHandler<ImageFrameReadyEventArgs>(CurrentRuntime_VideoFrameReady);
            CurrentRuntime.DepthFrameReady += new EventHandler<ImageFrameReadyEventArgs>(CurrentRuntime_DepthFrameReady);

        }


        


        void CurrentRuntime_DepthFrameReady(object sender, ImageFrameReadyEventArgs e)
        {
        
            pih = new PlanarImageHelper(e.ImageFrame.Image);
        }


        
        void CurrentRuntime_VideoFrameReady(object sender, ImageFrameReadyEventArgs e)
        {

            PlanarImage planarImage = e.ImageFrame.Image;


            double scale = (double)pih.Image.Width / (double)planarImage.Width;
        
            for (int y = 0; y < planarImage.Height; y++)
                for (int x = 0; x < planarImage.Width; x++)
                {
                    int baseindex = y * planarImage.Width * planarImage.BytesPerPixel + x * planarImage.BytesPerPixel;
            
                    switch (((ComboBoxItem)cbEffect.SelectedItem).Content.ToString())
                    {
                        case "Depth":
                            double mi = slider1.Value;
                            double mx = slider2.Value;
                            int cr = pih.GetDepthAt((int)Math.Floor(x * scale), (int)Math.Floor(y * scale), true);
                            if (cr > slider1.Maximum)
                            {
                                slider1.Maximum = cr;
                                slider2.Maximum = cr;
                            }
                            if (cr > mx || cr < mi)
                            {
                                planarImage.Bits[baseindex + 0] = 255;
                                planarImage.Bits[baseindex + 1] = 255;
                                planarImage.Bits[baseindex + 2] = 255;
                                planarImage.Bits[baseindex + 3] = 255;
                            }
                            break;

                        case "Player":

                            int pi = pih.GetPlayerAt((int)Math.Floor(x * scale), (int)Math.Floor(y * scale));
                            if (pi == 0)
                            {
                                planarImage.Bits[baseindex + 0] = 255;
                                planarImage.Bits[baseindex + 1] = 255;
                                planarImage.Bits[baseindex + 2] = 255;
                                planarImage.Bits[baseindex + 3] = 0;
                            }
                            break;

                        case "Background":

                            bool isbg = pih.GetPlayerAt((int)Math.Floor(x * scale), (int)Math.Floor(y * scale)) == 0;
                            for (int i = 0; i < 4; i++)
                            {
                                if (isbg)
                                {
                                    bg[baseindex + i] = planarImage.Bits[baseindex + i];

                                }
                                else
                                {
                                    planarImage.Bits[baseindex + i] = bg[baseindex + i];

                                }
                            }
                            break;

                        default: break;
                    }


                }


            if (imageHelper == null)
            {
                imageHelper = new InteropBitmapHelper(planarImage.Width, planarImage.Height, planarImage.Bits);
                image1.Source = imageHelper.InteropBitmap;
            }
            else
            {
                imageHelper.UpdateBits(planarImage.Bits);
            }
         }

       

        private void bUp_Click(object sender, RoutedEventArgs e)
        {
            CurrentRuntime.NuiCamera.ElevationAngle += 5;
        }

        private void bDown_Click(object sender, RoutedEventArgs e)
        {
            CurrentRuntime.NuiCamera.ElevationAngle -= 5;
        }

        private void comboBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {

        }

        private void cbEffect_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            switch (((ComboBoxItem)cbEffect.SelectedItem).Content.ToString())
            {
                case "Depth":
                    slider1.IsEnabled = true;
                    slider2.IsEnabled = true;
                    break;

                
                default: 
                    
                    slider1.IsEnabled = false;
                    slider2.IsEnabled = false;
                    break;
            }
        }


       
       
       
    }
}

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This article, along with any associated source code and files, is licensed under The Microsoft Public License (Ms-PL)

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About the Author

Jarek Kruza
Flextronics
Poland Poland
Programming since 10 years old with first commercial app sold in age of 16.
 
In past got Bachelor's degree in Computer Sciences and worked as Linux administrator and software developer.
 
Currently slightly over 30 and working as IT Project Manager for Flextronics.
 
Still coding for fun and/or money.

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