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C# OpenCvSharp Tracker 目标追踪

news 来源：原创 2024/5/19 16:14:35

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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;
}

}
}

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;}}
}