Anko: Created page with "

 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using S..."


2015-02-11T07:29:06Z
Created page with "<code><pre> using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using S..."
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<code><pre>

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;



using Emgu.CV;

using Emgu.Util;

using Emgu.CV.Structure;

using System.Windows.Threading;



namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private Capture cap = new Capture();

        Image<Bgr, byte> frame;

        Image<Bgr, byte> background;

        Image<Gray, byte> bOr;

        private Image<Gray, byte> mask;

        private Image<Gray, byte> maskI;



        private DispatcherTimer timer = new DispatcherTimer();



        private void Form1_Load(object sender, EventArgs e)

        {

            background = new Image<Bgr, byte>("C:/images/test.jpg");

            this.Size = new System.Drawing.Size(100, 100);

           

            frame = cap.QueryFrame();

            frame = cap.QueryFrame();

            frame = cap.QueryFrame();

            frame = cap.QueryFrame();

            frame = cap.QueryFrame();

            frame = cap.QueryFrame();

            bOr = frame.Convert<Gray,byte>();

            

            this.Size = frame.Size;



            

            mask = frame.Convert<Gray, byte>();

            maskI = frame.Convert<Gray, byte>();



            background = background.Resize(frame.Size.Width, frame.Size.Height, Emgu.CV.CvEnum.INTER.CV_INTER_LINEAR);

         

            timer.Tick += new EventHandler(timer_tick);

            timer.Interval = new TimeSpan(0, 0, 0, 0, 35);

            timer.Start();

        }



        private Image<Gray, byte> gray;

        Image<Bgr, byte> combined;



      

        void timer_tick(object sender, EventArgs e)

        {

            frame = cap.QueryFrame();

            gray = frame.Convert<Gray, byte>();



            mask.SetValue(0);

            maskI.SetValue(255);

           

            gray = gray.AbsDiff(bOr);

            gray = gray.ThresholdBinary(new Gray(20), new Gray(255));

            

            double largestarea = 0;

           

           Contour<Point> largestContour = null;

           var sourceContours = gray.FindContours(Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_NONE, Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_LIST);

         

           while (sourceContours != null)

           {

               if(largestarea < sourceContours.Area)

               {

                   largestarea = sourceContours.Area;

                   largestContour = sourceContours;

               }

               sourceContours = sourceContours.HNext;

           }



           if (largestContour != null)

           {

               largestarea = largestContour.Area;

               mask.Draw(largestContour, new Gray(255), -1);

               maskI = maskI.Sub(mask);



               combined = background.Copy(maskI);

               frame = frame.Copy(mask);

               frame = frame.Add(combined);

           }

 

            pictureBox1.Image = frame.Bitmap;





        }



        private void pictureBox1_Click(object sender, EventArgs e)

        {



        }





    }

}

</pre></code>

Talk:OpenCV Background - Revision history

Anko: Created page with " `using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using S..."`