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Index › Programming Questions & Help › Programs › Png Frame on top of OpenCV Blobs
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Png Frame on top of OpenCV Blobs (Read 1780 times)
Pankyrou
Png Frame on top of OpenCV Blobs
Apr 29th, 2010, 11:41pm  
I am trying to make a concept where the program detects Movement and creates farmed video parts .

As far as now I was able to have the movement detection and video .

Used OpenCV and ControlCP5 libraries .

So any ideas how i can make the blobs stay a bit longer and generate a frame png on top of them

I tried to change the scale and the size of the png but i run in an error of null point or Coordinate out of bounds!

Any ideas

...

here is the code:

Quote:
import hypermedia.video.*;
import java.awt.*;
import controlP5.*;

OpenCV opencv;

int w =640;
int h = 480;
public int threshold = 15;
public int r=255;
public int g=255;
public int b=255;
public int blurLvl=20;
public int contrast_value=2;


public int amountOfBlobs = 20;

PImage[] imgArray = new PImage[amountOfBlobs];
PImage copyimg;



ControlP5 controlP5;

int myColorBackground = color(0,0,0);

ControlWindow controlWindow;




void setup() {
 
 

   size(w, h);
   
   //control
   controlP5 = new ControlP5(this);
 controlP5.setAutoDraw(false);
 controlWindow = controlP5.addControlWindow("controlP5window",100,100,400,200);
 controlWindow.hideCoordinates();
 
 controlWindow.setBackground(color(40));
 //BLOBS-THRESHOLD
 Controller mySlider = controlP5.addSlider("amountOfBlobs",0,20,40,40,100,10);
 mySlider.setWindow(controlWindow);
 Controller mySlider2 = controlP5.addSlider("threshold",0,50,40,50,100,10);
 mySlider2.setWindow(controlWindow);
 //RGB
   Controller mySlider3 = controlP5.addSlider("r",0,255,40,60,100,10);
 mySlider3.setWindow(controlWindow);
   Controller mySlider4 = controlP5.addSlider("g",0,255,40,70,100,10);
 mySlider4.setWindow(controlWindow);
   Controller mySlider5 = controlP5.addSlider("b",0,255,40,80,100,10);
 mySlider5.setWindow(controlWindow);
 //Blur Level
  Controller mySlider6 = controlP5.addSlider("blurLvl",0,255,40,90,100,10);
 mySlider6.setWindow(controlWindow);
 //contrast
 Controller mySlider7 = controlP5.addSlider("contrast_value",0,255,40,100,100,10);
 mySlider7.setWindow(controlWindow);

 //controlP5.addSlider("amountOfBlobs1",0,20,40,40,100,10);
 
 controlWindow.setTitle("Controll");
 
 //end controll

   opencv = new OpenCV( this );
   opencv.capture(w,h);
   opencv.loadImage( "frontwall-small-resized.jpg", width, height );
   

   PImage copyimg = new PImage(w,h);
}

void draw() {

   background(0);
   
    controlP5.draw();
   
   opencv.read();
   opencv.flip(OpenCV.FLIP_HORIZONTAL);

   //copyimg.copy(opencv.image(),0,0,w,h,0,0,w,h);
   copyimg = opencv.image();
 
   
   noTint();
  //image( opencv.image(), 0, 0 );
 //Background image
   image( loadImage("frontwall-small-resized.jpg"), 0, 0);

     opencv.convert( OpenCV.GRAY);
     opencv.contrast( contrast_value );  
     copyimg = opencv.image();
     opencv.absDiff();
     opencv.blur(OpenCV.BLUR, blurLvl);    
     opencv.threshold(threshold);
   //image(opencv.image(),0,0);
   
   Blob[] blobs = opencv.blobs( 80, w*h/3, amountOfBlobs, false);
   
   for( int i=0; i<blobs.length; i++ ) {

       Rectangle bounding_rect      = blobs[i].rectangle;
     
       imgArray[i] = createImage(bounding_rect.width, bounding_rect.height, RGB);
       imgArray[i].copy(copyimg,bounding_rect.x, bounding_rect.y, bounding_rect.width, bounding_rect.height, 0, 0, bounding_rect.width, bounding_rect.height);
       
       
       tint(r,g,b);
       image(imgArray[i],bounding_rect.x, bounding_rect.y);
       
   }

   //frame differencing, remember last frame
   opencv.remember();
   
   //  flipped the image earlier, we need to flip it here too.
   opencv.remember(OpenCV.SOURCE, OpenCV.FLIP_HORIZONTAL);
}




void keyPressed() {
 if(key==',') controlP5.window("controlP5window").hide();
 if(key=='.') controlP5.window("controlP5window").show();
 // controlWindow = controlP5.addControlWindow("controlP5window2",600,100,400,200);
 // controlP5.controller("sliderValue1").moveTo(controlWindow);
}

public void stop() {
   opencv.stop();
   super.stop();
}
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Pankyrou
Re: Png Frame on top of OpenCV Blobs
Reply #1 - May 2nd, 2010, 12:25am  
I was able to load the image on top of the blobs but i can not change the size of it to it the blob.

any idea?

here is the code

Quote:
import hypermedia.video.*;
import java.awt.*;
import controlP5.*;

OpenCV opencv;

int w =640;
int h = 480;
public int threshold = 15;
public int r=255;
public int g=255;
public int b=255;
public int blurLvl=20;
public int contrast_value=2;


public int amountOfBlobs = 20;

PImage[] imgArray = new PImage[amountOfBlobs];
PImage copyimg;



ControlP5 controlP5;

int myColorBackground = color(0,0,0);

ControlWindow controlWindow;




void setup() {
 
 

   size(w, h);
   
   //control
   controlP5 = new ControlP5(this);
 controlP5.setAutoDraw(false);
 controlWindow = controlP5.addControlWindow("controlP5window",100,100,400,200);
 controlWindow.hideCoordinates();
 
 controlWindow.setBackground(color(40));
 //BLOBS-THRESHOLD
 Controller mySlider = controlP5.addSlider("amountOfBlobs",0,20,40,40,100,10);
 mySlider.setWindow(controlWindow);
 Controller mySlider2 = controlP5.addSlider("threshold",0,50,40,50,100,10);
 mySlider2.setWindow(controlWindow);
 //RGB
   Controller mySlider3 = controlP5.addSlider("r",0,255,40,60,100,10);
 mySlider3.setWindow(controlWindow);
   Controller mySlider4 = controlP5.addSlider("g",0,255,40,70,100,10);
 mySlider4.setWindow(controlWindow);
   Controller mySlider5 = controlP5.addSlider("b",0,255,40,80,100,10);
 mySlider5.setWindow(controlWindow);
 //Blur Level
  Controller mySlider6 = controlP5.addSlider("blurLvl",0,255,40,90,100,10);
 mySlider6.setWindow(controlWindow);
 //contrast
 Controller mySlider7 = controlP5.addSlider("contrast_value",0,255,40,100,100,10);
 mySlider7.setWindow(controlWindow);

 //controlP5.addSlider("amountOfBlobs1",0,20,40,40,100,10);
 
 controlWindow.setTitle("Controll");
 
 //end controll

   opencv = new OpenCV( this );
   opencv.capture(w,h);
   opencv.loadImage( "frontwall-small-resized.jpg", width, height );
   opencv.loadImage("frame.png",width,height);
   

   PImage copyimg = new PImage(w,h);
}

void draw() {

   background(0);
   
    controlP5.draw();
   
   opencv.read();
   opencv.flip(OpenCV.FLIP_HORIZONTAL);

   //copyimg.copy(opencv.image(),0,0,w,h,0,0,w,h);
   copyimg = opencv.image();
 
   
   noTint();
  //image( opencv.image(), 0, 0 );
   image( loadImage("frontwall-small-resized.jpg"), 0, 0);

   

     opencv.convert( OpenCV.GRAY);
     opencv.contrast( contrast_value );  
     copyimg = opencv.image();
     opencv.absDiff();
     opencv.blur(OpenCV.BLUR, blurLvl);    
     opencv.threshold(threshold);
   //image(opencv.image(),0,0);
   
   Blob[] blobs = opencv.blobs( 80, w*h/3, amountOfBlobs, false);
   
   for( int i=0; i<blobs.length; i++ ) {

       Rectangle bounding_rect      = blobs[i].rectangle;
           
     
       imgArray[i] = createImage(bounding_rect.width, bounding_rect.height, RGB);
       imgArray[i].copy(copyimg,bounding_rect.x, bounding_rect.y, bounding_rect.width, bounding_rect.height, 0, 0, bounding_rect.width, bounding_rect.height);
       
       //Frame
       image( loadImage("frame.png"), bounding_rect.x, bounding_rect.y);
       
       tint(r,g,b);
       image(imgArray[i],bounding_rect.x, bounding_rect.y);
       noTint();
       image( loadImage("frame.png"), bounding_rect.x, bounding_rect.y);
       
   }

   //frame differencing, remember last frame
   opencv.remember();
   
   //  flipped the image earlier, we need to flip it here too.
   opencv.remember(OpenCV.SOURCE, OpenCV.FLIP_HORIZONTAL);
}




void keyPressed() {
 if(key==',') controlP5.window("controlP5window").hide();
 if(key=='.') controlP5.window("controlP5window").show();
 // controlWindow = controlP5.addControlWindow("controlP5window2",600,100,400,200);
 // controlP5.controller("sliderValue1").moveTo(controlWindow);
}

public void stop() {
   opencv.stop();
   super.stop();
}
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radarboy
Re: Png Frame on top of OpenCV Blobs
Reply #2 - May 10th, 2010, 2:52pm  
pass a loop through your blobs and you can get the width and the height of each blob. pretty easy from there:

Code:

for( int blob_num = 0; blob_num < blobs.length; blob_num++ ) {

Rectangle bounding_box = blobs[blob_num].rectangle;
noFill();
stroke(0,128,0);
this.rect( bounding_box.x, bounding_box.y, bounding_box.width, bounding_box.height);
			}
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