Detected motion implementation and triggering

Question

How can I implement a simple motion detection method using EMGUCV? I was looking for suitable examples, but the only solutions I found were too complicated to implement.

Is there a way to implement a simple method for motion detection to call something in my application?

Answer 1

• Convert one frame to grayscale.
• Convert new frames from real time to shades of gray.
• Make abstractions between the first frame and the new frame in real time.

The result of this is the third, new frame consists of the differences between the first two. Use erosion and thresholding to do this to get a frame with white representing the moving section and black representing the rest of the space.

Here is the code snippet:

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.CV.UI; using Emgu.CV.CvEnum; using Emgu.CV.Structure; using System.Diagnostics; using System.IO; using System.Data.SqlClient; using System.Data.SqlServerCe; using System.Drawing.Imaging; namespace ptuxiakh___ { public partial class Form1 : Form { Capture _capture = new Capture(); Capture capture2 = new Capture(); Image<Bgr, Byte> FirstImage = new Image<Bgr, Byte>(640, 480); Image<Bgr, Byte> RealTimeImage = new Image<Bgr, Byte>(640, 480); Image<Gray, Byte> des = new Image<Gray, Byte>(640, 480); Image<Gray, Byte> thres = new Image<Gray, Byte>(640, 480); Image<Gray, Byte> eroded = new Image<Gray, Byte>(640, 480); bool baground = false; private void Background() { try{ FirstImage = _capture.QueryFrame(); background = true; } catch(Exception e) { baground = false; } } private void Tracking(object sender, EventArgs e) { if (baground == true) { RealTimeImage = capture2.QueryFrame(); CvInvoke.cvAbsDiff(FirstImage.Convert<Gray, Byte>(), RealTimeImage.Convert<Gray, Byte>(), des); CvInvoke.cvThreshold(des, thres, 20, 255, THRESH.CV_THRESH_BINARY); CvInvoke.cvErode(thres, eroded, IntPtr.Zero, 2); } else { Background(); // At first trying to get a static frame for // abstraction with real time frame } } private void StartButton_Click(object sender, EventArgs e) { Application.Idle += new EventHandler(Tracking); } private void Stopbutton_Click(object sender, EventArgs e) { Application.Idle -= new EventHandler(Tracking); } 

// eroded will be your relust

Answer 2

Have you found a motion detection solution? If you did, send me your project at [e-mail] plza.