/**

 * (./) BlobDetection.java, 03/05/08

 * (by) cousot stephane @ http://www.ubaa.net/

 * (cc) some right reserved

 *

 * Sample file for the "OpenCV" project.

 * Use ESC key to close the program properly.

 * Press SPACE BAR to record background image.

 *

 * This sample is released under a Creative Commons Attribution 3.0 License

 * ‹ http://creativecommons.org/licenses/by/3.0/ ›

 */

 

 

 

import java.awt.*;

import java.awt.event.*;

import java.awt.image.MemoryImageSource;

import hypermedia.video.*;

 

public class test extends Frame implements Runnable {

// program execution frame rate (millisecond)

final int FRAME_RATE  = 1000/30;

// threshold value for removing noises

final float THRESHOLD = 80f; 

OpenCV cv = null; // OpenCV Object

Thread t  = null; // the program thread

// the input video stream image

Image frame = null;

Blob[] blobs = null;

/**

* Setup Frame and Object(s).

*/

test() {

super( "Blob Detection Sample" );

// OpenCV setup

cv = new OpenCV();

System.out.println("Antes do capture 640 480");

cv.capture( 640, 480 );

System.out.println("Passou pela capture 640 480");

cv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT );

// frame setup

this.setBounds( 100, 100, cv.width, cv.height );

this.setBackground( Color.BLACK );

this.setVisible( true );

this.addKeyListener(

new KeyAdapter() {

public void keyReleased( KeyEvent e ) { 

if ( e.getKeyCode()==KeyEvent.VK_ESCAPE ) { // ESC : release OpenCV resources

t = null;

cv.dispose();

System.exit(0);

}

if ( e.getKeyCode()==KeyEvent.VK_SPACE ) // SPACE : record background

cv.remember();

}

}

);

// start running program

//t = new Thread( this );

// t.start();

}

/**

* Release OpenCV resources.

*/

public void stop() {

t = null;

cv.dispose();

}

/**

* Draw video frame and each detected faces area.

*/

public void paint( Graphics g ) {

if ( frame==null || blobs==null ) return;

// draw image

//g.drawImage( frame, 0, 0, null );

// draw blobs

for( Blob b : blobs ) {

// define blob's contour

Polygon shape = new Polygon();

for( Point p : b.points ) shape.addPoint( p.x, p.y );

// fill blob

g.setColor( b.isHole ? Color.RED : Color.BLUE );

g.fillPolygon( shape );

}

}

/**

* Execute this sample.

*/

public void run() {

while( t!=null && cv!=null ) {

try {

t.sleep( FRAME_RATE );

// grab image from video stream

cv.read();

//cv.flip( OpenCV.FLIP_HORIZONTAL );

// create a new image from cv pixels data

MemoryImageSource mis = new MemoryImageSource( cv.width, cv.height, cv.pixels(), 0, cv.width );

frame = createImage( mis );

// prepare image for detection

cv.absDiff();

cv.threshold( THRESHOLD );

// detect blobs

blobs = cv.blobs( 30, cv.width*(cv.height/2), 100, true, OpenCV.MAX_VERTICES*4 );

// of course, repaint

repaint();

}

catch( InterruptedException e ) {System.out.println("Erro mortal");}

}

}

/**

* Main method.

* @param String[] list of arguments's user passed from the console to this program

*/

public static void main( String[] args ) {

// System.out.println( "\nOpenCV blob detection sample" );

//System.out.println( "PRESS SPACE BAR TO RECORD BACKGROUND IMAGE\n" );

new test();

} 

}