C# OpenCvSharp Tracker 目标追踪

目录

效果

项目

代码

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C# OpenCvSharp Tracker 目标追踪

效果

项目

代码

using OpenCvSharp;
using OpenCvSharp.Extensions;
using OpenCvSharp.Tracking;
using System;
using System.Drawing;
using System.Reflection;
using System.Windows.Forms;

namespace C__OpenCvSharp_Tracker_目标追踪
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        string filename = "";
        bool play = false;
        Tracker tracker;

        VideoCapture capture;
        bool m_mouseDown = false;
        bool m_mouseMove = false;

        System.Drawing.Point startPoint = new System.Drawing.Point();
        System.Drawing.Point endPoint = new System.Drawing.Point();

        Mat currentFrame = new Mat();
        Rect roi = new Rect();

        private void Form1_Load(object sender, EventArgs e)
        {
            comboBox1.SelectedIndex = 0;
            toolStripStatusLabel1.Text = "请打开视频文件";
            label2.Text = "";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "Video files (*.avi)|*.avi|MP4 files (*.mp4)|*.mp4";
            ofd.RestoreDirectory = true;
            ofd.CheckFileExists = true;
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                filename = ofd.FileName;
                toolStripStatusLabel1.Text = filename;
                capture = new VideoCapture(filename);
                if (!capture.IsOpened())
                {
                    toolStripStatusLabel1.Text = " 打开视频文件失败";
                    return;
                }
                capture.Read(currentFrame);
                if (!currentFrame.Empty())
                {
                    pictureBox1.Image = BitmapConverter.ToBitmap(currentFrame);
                    timer1.Interval = (int)(1000.0 / capture.Fps);
                    timer1.Enabled = true;

                    m_mouseMove = false;
                    m_mouseDown = false;
                    pictureBox2.Image = null;
                }

            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            play = true;
            if (pictureBox2.Image != null)
            {
                switch (comboBox1.SelectedIndex)
                {
                    case 0:
                    default:
                        tracker = TrackerCSRT.Create();
                        break;
                    case 1:
                        tracker = TrackerGOTURN.Create();
                        break;
                    case 2:
                        tracker = TrackerKCF.Create();
                        break;
                    case 3:
                        tracker = TrackerMIL.Create();
                        break;
                }
                tracker.Init(currentFrame, roi);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            play = false;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (play)
            {
                capture.Read(currentFrame);
                if (currentFrame.Empty())
                {
                    play = false;
                    pictureBox1.Image = null;
                    pictureBox2.Image = null;

                    timer1.Enabled = false;
                    return;
                }
                if (pictureBox2.Image != null && tracker != null)
                {
                    tracker.Update(currentFrame, ref roi);
                    Cv2.Rectangle(currentFrame, roi, Scalar.Red);
                    label2.Text = String.Format("ROI:({0},{1})-({2},{3})", roi.X, roi.Y, roi.X + roi.Width, roi.Y + roi.Height);
                }
                pictureBox1.Image = BitmapConverter.ToBitmap(currentFrame);
            }
        }

        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            if (!m_mouseDown || !m_mouseMove)
                return;
            Graphics g = e.Graphics;
            Pen p = new Pen(Color.Blue, 2);
            Rectangle rect = new Rectangle(startPoint.X, startPoint.Y, (endPoint.X - startPoint.X), (endPoint.Y - startPoint.Y));
            g.DrawRectangle(p, rect);
        }

        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            if (pictureBox1.Image == null)
                return;
            if (!m_mouseDown) return;

            m_mouseMove = true;
            endPoint = e.Location;

            pictureBox1.Invalidate();
        }

        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            if (!m_mouseDown || !m_mouseMove)
                return;
            m_mouseDown = false;
            m_mouseMove = false;

            System.Drawing.Point image_startPoint = ConvertCooridinate(startPoint);
            System.Drawing.Point image_endPoint = ConvertCooridinate(endPoint);
            if (image_startPoint.X < 0)
                image_startPoint.X = 0;
            if (image_startPoint.Y < 0)
                image_startPoint.Y = 0;
            if (image_endPoint.X < 0)
                image_endPoint.X = 0;
            if (image_endPoint.Y < 0)
                image_endPoint.Y = 0;
            if (image_startPoint.X > currentFrame.Cols)
                image_startPoint.X = currentFrame.Cols;
            if (image_startPoint.Y > currentFrame.Rows)
                image_startPoint.Y = currentFrame.Rows;
            if (image_endPoint.X > currentFrame.Cols)
                image_endPoint.X = currentFrame.Cols;
            if (image_endPoint.Y > currentFrame.Rows)
                image_endPoint.Y = currentFrame.Rows;

            label2.Text = String.Format("ROI:({0},{1})-({2},{3})", image_startPoint.X, image_startPoint.Y, image_endPoint.X, image_endPoint.Y);
            int w = (image_endPoint.X - image_startPoint.X);
            int h = (image_endPoint.Y - image_startPoint.Y);
            if (w > 10 && h > 10)
            {
                roi = new Rect(image_startPoint.X, image_startPoint.Y, w, h);

                Mat roi_mat = currentFrame[roi];
                pictureBox2.Image = BitmapConverter.ToBitmap(roi_mat);
            }
        }

        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            if (pictureBox1.Image == null)
                return;
            play = false;
            m_mouseDown = true;

            startPoint = e.Location;
        }

        private System.Drawing.Point ConvertCooridinate(System.Drawing.Point point)
        {
            System.Reflection.PropertyInfo rectangleProperty = this.pictureBox1.GetType().GetProperty("ImageRectangle", BindingFlags.Instance | BindingFlags.NonPublic);
            Rectangle pictureBox = (Rectangle)rectangleProperty.GetValue(this.pictureBox1, null);

            int zoomedWidth = pictureBox.Width;
            int zoomedHeight = pictureBox.Height;

            int imageWidth = pictureBox1.Image.Width;
            int imageHeight = pictureBox1.Image.Height;

            double zoomRatex = (double)(zoomedWidth) / (double)(imageWidth);
            double zoomRatey = (double)(zoomedHeight) / (double)(imageHeight);
            int black_left_width = (zoomedWidth == this.pictureBox1.Width) ? 0 : (this.pictureBox1.Width - zoomedWidth) / 2;
            int black_top_height = (zoomedHeight == this.pictureBox1.Height) ? 0 : (this.pictureBox1.Height - zoomedHeight) / 2;

            int zoomedX = point.X - black_left_width;
            int zoomedY = point.Y - black_top_height;

            System.Drawing.Point outPoint = new System.Drawing.Point();
            outPoint.X = (int)((double)zoomedX / zoomRatex);
            outPoint.Y = (int)((double)zoomedY / zoomRatey);

            return outPoint;
        }

    }
}

  1. using OpenCvSharp;
  2. using OpenCvSharp.Extensions;
  3. using OpenCvSharp.Tracking;
  4. using System;
  5. using System.Drawing;
  6. using System.Reflection;
  7. using System.Windows.Forms;
  8.  
  9. namespace C__OpenCvSharp_Tracker_目标追踪
  10. {
  11.     public partial class Form1 : Form
  12.     {
  13.         public Form1()
  14.         {
  15.             InitializeComponent();
  16.         }
  17.  
  18.         string filename = "";
  19.         bool play = false;
  20.         Tracker tracker;
  21.  
  22.         VideoCapture capture;
  23.         bool m_mouseDown = false;
  24.         bool m_mouseMove = false;
  25.  
  26.         System.Drawing.Point startPoint = new System.Drawing.Point();
  27.         System.Drawing.Point endPoint = new System.Drawing.Point();
  28.  
  29.         Mat currentFrame = new Mat();
  30.         Rect roi = new Rect();
  31.  
  32.         private void Form1_Load(object sender, EventArgs e)
  33.         {
  34.             comboBox1.SelectedIndex = 0;
  35.             toolStripStatusLabel1.Text = "请打开视频文件";
  36.             label2.Text = "";
  37.         }
  38.  
  39.         private void button1_Click(object sender, EventArgs e)
  40.         {
  41.             OpenFileDialog ofd = new OpenFileDialog();
  42.             ofd.Filter = "Video files (*.avi)|*.avi|MP4 files (*.mp4)|*.mp4";
  43.             ofd.RestoreDirectory = true;
  44.             ofd.CheckFileExists = true;
  45.             if (ofd.ShowDialog() == DialogResult.OK)
  46.             {
  47.                 filename = ofd.FileName;
  48.                 toolStripStatusLabel1.Text = filename;
  49.                 capture = new VideoCapture(filename);
  50.                 if (!capture.IsOpened())
  51.                 {
  52.                     toolStripStatusLabel1.Text = " 打开视频文件失败";
  53.                     return;
  54.                 }
  55.                 capture.Read(currentFrame);
  56.                 if (!currentFrame.Empty())
  57.                 {
  58.                     pictureBox1.Image = BitmapConverter.ToBitmap(currentFrame);
  59.                     timer1.Interval = (int)(1000.0 / capture.Fps);
  60.                     timer1.Enabled = true;
  61.  
  62.                     m_mouseMove = false;
  63.                     m_mouseDown = false;
  64.                     pictureBox2.Image = null;
  65.                 }
  66.  
  67.             }
  68.         }
  69.  
  70.         private void button2_Click(object sender, EventArgs e)
  71.         {
  72.             play = true;
  73.             if (pictureBox2.Image != null)
  74.             {
  75.                 switch (comboBox1.SelectedIndex)
  76.                 {
  77.                     case 0:
  78.                     default:
  79.                         tracker = TrackerCSRT.Create();
  80.                         break;
  81.                     case 1:
  82.                         tracker = TrackerGOTURN.Create();
  83.                         break;
  84.                     case 2:
  85.                         tracker = TrackerKCF.Create();
  86.                         break;
  87.                     case 3:
  88.                         tracker = TrackerMIL.Create();
  89.                         break;
  90.                 }
  91.                 tracker.Init(currentFrame, roi);
  92.             }
  93.         }
  94.  
  95.         private void button3_Click(object sender, EventArgs e)
  96.         {
  97.             play = false;
  98.         }
  99.  
  100.         private void timer1_Tick(object sender, EventArgs e)
  101.         {
  102.             if (play)
  103.             {
  104.                 capture.Read(currentFrame);
  105.                 if (currentFrame.Empty())
  106.                 {
  107.                     play = false;
  108.                     pictureBox1.Image = null;
  109.                     pictureBox2.Image = null;
  110.  
  111.                     timer1.Enabled = false;
  112.                     return;
  113.                 }
  114.                 if (pictureBox2.Image != null && tracker != null)
  115.                 {
  116.                     tracker.Update(currentFrame, ref roi);
  117.                     Cv2.Rectangle(currentFrame, roi, Scalar.Red);
  118.                     label2.Text = String.Format("ROI:({0},{1})-({2},{3})", roi.X, roi.Y, roi.X + roi.Width, roi.Y + roi.Height);
  119.                 }
  120.                 pictureBox1.Image = BitmapConverter.ToBitmap(currentFrame);
  121.             }
  122.         }
  123.  
  124.         private void pictureBox1_Paint(object sender, PaintEventArgs e)
  125.         {
  126.             if (!m_mouseDown || !m_mouseMove)
  127.                 return;
  128.             Graphics g = e.Graphics;
  129.             Pen p = new Pen(Color.Blue, 2);
  130.             Rectangle rect = new Rectangle(startPoint.X, startPoint.Y, (endPoint.X - startPoint.X), (endPoint.Y - startPoint.Y));
  131.             g.DrawRectangle(p, rect);
  132.         }
  133.  
  134.         private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
  135.         {
  136.             if (pictureBox1.Image == null)
  137.                 return;
  138.             if (!m_mouseDown) return;
  139.  
  140.             m_mouseMove = true;
  141.             endPoint = e.Location;
  142.  
  143.             pictureBox1.Invalidate();
  144.         }
  145.  
  146.         private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
  147.         {
  148.             if (!m_mouseDown || !m_mouseMove)
  149.                 return;
  150.             m_mouseDown = false;
  151.             m_mouseMove = false;
  152.  
  153.             System.Drawing.Point image_startPoint = ConvertCooridinate(startPoint);
  154.             System.Drawing.Point image_endPoint = ConvertCooridinate(endPoint);
  155.             if (image_startPoint.X < 0)
  156.                 image_startPoint.X = 0;
  157.             if (image_startPoint.Y < 0)
  158.                 image_startPoint.Y = 0;
  159.             if (image_endPoint.X < 0)
  160.                 image_endPoint.X = 0;
  161.             if (image_endPoint.Y < 0)
  162.                 image_endPoint.Y = 0;
  163.             if (image_startPoint.X > currentFrame.Cols)
  164.                 image_startPoint.X = currentFrame.Cols;
  165.             if (image_startPoint.Y > currentFrame.Rows)
  166.                 image_startPoint.Y = currentFrame.Rows;
  167.             if (image_endPoint.X > currentFrame.Cols)
  168.                 image_endPoint.X = currentFrame.Cols;
  169.             if (image_endPoint.Y > currentFrame.Rows)
  170.                 image_endPoint.Y = currentFrame.Rows;
  171.  
  172.             label2.Text = String.Format("ROI:({0},{1})-({2},{3})", image_startPoint.X, image_startPoint.Y, image_endPoint.X, image_endPoint.Y);
  173.             int w = (image_endPoint.X - image_startPoint.X);
  174.             int h = (image_endPoint.Y - image_startPoint.Y);
  175.             if (w > 10 && h > 10)
  176.             {
  177.                 roi = new Rect(image_startPoint.X, image_startPoint.Y, w, h);
  178.  
  179.                 Mat roi_mat = currentFrame[roi];
  180.                 pictureBox2.Image = BitmapConverter.ToBitmap(roi_mat);
  181.             }
  182.         }
  183.  
  184.         private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
  185.         {
  186.             if (pictureBox1.Image == null)
  187.                 return;
  188.             play = false;
  189.             m_mouseDown = true;
  190.  
  191.             startPoint = e.Location;
  192.         }
  193.  
  194.         private System.Drawing.Point ConvertCooridinate(System.Drawing.Point point)
  195.         {
  196.             System.Reflection.PropertyInfo rectangleProperty = this.pictureBox1.GetType().GetProperty("ImageRectangle", BindingFlags.Instance | BindingFlags.NonPublic);
  197.             Rectangle pictureBox = (Rectangle)rectangleProperty.GetValue(this.pictureBox1, null);
  198.  
  199.             int zoomedWidth = pictureBox.Width;
  200.             int zoomedHeight = pictureBox.Height;
  201.  
  202.             int imageWidth = pictureBox1.Image.Width;
  203.             int imageHeight = pictureBox1.Image.Height;
  204.  
  205.             double zoomRatex = (double)(zoomedWidth) / (double)(imageWidth);
  206.             double zoomRatey = (double)(zoomedHeight) / (double)(imageHeight);
  207.             int black_left_width = (zoomedWidth == this.pictureBox1.Width) ? 0 : (this.pictureBox1.Width - zoomedWidth) / 2;
  208.             int black_top_height = (zoomedHeight == this.pictureBox1.Height) ? 0 : (this.pictureBox1.Height - zoomedHeight) / 2;
  209.  
  210.             int zoomedX = point.X - black_left_width;
  211.             int zoomedY = point.Y - black_top_height;
  212.  
  213.             System.Drawing.Point outPoint = new System.Drawing.Point();
  214.             outPoint.X = (int)((double)zoomedX / zoomRatex);
  215.             outPoint.Y = (int)((double)zoomedY / zoomRatey);
  216.  
  217.             return outPoint;
  218.         }
  219.  
  220.     }
  221. }

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