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Motion Detection

MimansoobMimansoob
edited April 2014 in Library Questions

Hello, I have a graduation project that should be done in 4 weeks and it includes motion tracking so I made a code that was not bad but still has problems..

I just knew recently about "blobscanner library" from Mr.adiarduino I have searched about it and it was much better than my code but the problem was that I could not find any code so I can learn it and make some tests on it so I understand it

So what I want is if you have a simple code any code that tracks moving objects using blobscanner library please give me it and I will understand it. or please check my current code and advice me on how to make the blue circle more stable and only following the center of the whole moving object.

here is my code:

    import processing.video.*;

    Capture video;

    PImage prevFrame;

    float threshold = 150;
    int Mx = 0;
    int My = 0;
    int ave = 0;

    int ballX = width/8;
    int ballY = height/8;
    int rsp = 5;

    void setup() {
      size(320, 240);
      video = new Capture(this, width, height, 30);
      video.start();
      prevFrame = createImage(video.width, video.height, RGB);
    }

    void draw() {


      if (video.available()) {

        prevFrame.copy(video, 0, 0, video.width, video.height, 0, 0, video.width, video.height); 
        prevFrame.updatePixels();
        video.read();
      }

      loadPixels();
      video.loadPixels();
      prevFrame.loadPixels();

      Mx = 0;
      My = 0;
      ave = 0;


      for (int x = 0; x < video.width; x ++ ) {
        for (int y = 0; y < video.height; y ++ ) {

          int loc = x + y*video.width;            
          color current = video.pixels[loc];      
          color previous = prevFrame.pixels[loc]; 


          float r1 = red(current); 
          float g1 = green(current); 
          float b1 = blue(current);
          float r2 = red(previous); 
          float g2 = green(previous); 
          float b2 = blue(previous);
          float diff = dist(r1, g1, b1, r2, g2, b2);


          if (diff > threshold) { 
            pixels[loc] = video.pixels[loc];
            Mx += x;
            My += y;
            ave++;
          } 
          else {

            pixels[loc] = video.pixels[loc];
          }
        }
      }
      fill(255);
      rect(0, 0, width, height);
      if (ave != 0) { 
        Mx = Mx/ave;
        My = My/ave;
      }
      if (Mx > ballX + rsp/2 && Mx > 50) {
        ballX+= rsp;
      }
      else if (Mx < ballX - rsp/2 && Mx > 50) {
        ballX-= rsp;
      }
      if (My > ballY + rsp/2 && My > 50) {
        ballY+= rsp;
      }
      else if (My < ballY - rsp/2 && My > 50) {
        ballY-= rsp;
      }

      updatePixels();
      noStroke();
      fill(0, 0, 255);
      ellipse(ballX, ballY, 20, 20);
    }
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