Came across this beautiful installation which left me thinking is it made in processing or openframeworks....

http://www.youtube.com/watch?v=aJGr8-96VTQ

I seek guidance, reference links...on how to take screen shot of the program window (running the program) and save it to a particular folder on the press of spacebar.

Thanks in advance to all the wonderful people in this forum.

Hi,
 I have this working on Win 7, after spending my half a day...

The problem I have now is : when running FaceDetection example I have black screen in the webcam frame.
It even shows me frameRate, no errors.

camera on skype works fine...

Can somebody help me ?
Thank you.

My current (not working) setup is:
windows 7 x64.
quicktime 7.6.9
processing 1.5
OpenCV 1.0

I am struggling with realizing an idea and it drives me mad already, so I was wondering if anyone could help me?

i have made a little program with with openCV, when I run the program, it will assign random image(lets say No. 4 from the arrayList) to first face(detected). then if second face is detected the image No. 4 will move to second face(which was assigned to face 1 untill face 2 was detected) and face 1 would get a new random image from the arrayList.

What I am trying to do is, If the image no. 4 is assigned to face 1 then It should stick to that face until it is not detected and whenever the face 2 is detected the random image should be assigned from the arrayList.

like this :
http://vimeo.com/7321323

I have been trying to come up with a solution to the strange behavior of my code. but with no success I am still at the same challenge as I was few days back.

I am looking for a lead/suggestion/guidance on how to go about it, I can do my homework and write my own code.

well, I have made an array of 7 images. I want to assign one of these images randomly to the face detected.

It is assigning images randomly to the faces detected but. whenever the new face is detected the first image assigned to the face1 moves to face2 and face1 gets a new image. then face3 gets image from face2, face2 from face1 and face1 gets new image.

thanks in advance

I tried with both versions of GSvideo but still it give me this error.

I have been trying to reduce the opencv noise with the code below, I am roughly getting the idea of how to do it but I think the problem is at the implementation level.

Please somebody help me with the implementation part......

Idea: the idea is the take 3-5 frames and average the position of the rect.

code:

import hypermedia.video.*; 
import java.awt.Rectangle; 

OpenCV opencv; 

void setup() { 

size( 320, 240 ); 

opencv = new OpenCV(this); 
opencv.capture( width, height ); 
opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT ); 

void draw() { 

opencv.read(); 
image( opencv.image(), 0, 0 ); 
Rectangle[] faces = opencv.detect(); 

noFill(); 
stroke(255,0,0); 
for( int i=0; i<faces.length; i++ ) { 

rect( faces[i].x, faces[i].y, faces[i].width, faces[i].height ); 
  } 
}

can somebody tell me what does this mean...

PImage img = frames[ frameCount % frames. length ];




hi,

Need help to reduce the jitter from the readings I am getting through openCV. Is there any way I can buffer, or get smoothed readings from OpenCV.

thanks in advance

 

hi all masters out there,

I have been successful in doing face tracking using openCV. I know there are lot of people who have already achieved it before even I learnt processing, but its a big thing for me to make it working. now the next step for me is to assign an image to the face detected. I have a set of five images, of which I have made an array as following,

   images[0] = loadImage("img1.gif");
   images[1] = loadImage("img2.gif");
   images[2] = loadImage("img3.gif");
   images[3] = loadImage("img4.gif");
   images[4] = loadImage("img5.gif");

I will be assigning the images to faces with as following

 image (images[index],faces[i].x, faces[i].y, faces[i].width, faces[i].height ); 

the above piece of code displays all the images sequentially over the face.

The part which I am not able to do :

I want to assign img.1 to the 1st face detected then randomly assign img. 4 to face 4 detected. now when the face 1  goes out of the camera range the img. 1 assigned to the face should fade out. If the same face(or another face) is detected again then a new image(randomly) should be assigned.


sometimes simple things become very complicated, I know exactly what I want to do but simply not able to put it together so that my machine can understand.

I will be very thankful for your help,
Thanks in advance

please help me with this...

I have this code which is following my mouse pointer quite smoothly, now I want to replace the mouse pointer with my tracked face.....please guide me with how to do it


float gravity = -7.0;
float mass = 10.0;
int numsprings = 5;
 
ArrayList springs;
 
void setup()
{
  size(1024, 768);
  smooth();
  fill(255, 255, 0);
  noStroke();
 
  springs = new ArrayList();
  for (int i=0; i<numsprings; i++) {   // make 5 boxes
    springs.add(new Spring2D(0, 0, mass, gravity));  // tell x, y position, mass and gravity
  }
}
 
void draw()
{
  background(40); 
  Spring2D firstspring = (Spring2D) springs.get(0);   // get position of the first box
  firstspring.update(mouseX, mouseY);   //  update the position of box one
  firstspring.display(mouseX, mouseY);
 
  for (int i=1; i<springs.size(); i++) {
    Spring2D spring = (Spring2D) springs.get(i);
    Spring2D backspring = (Spring2D) springs.get(i-1);
    spring.update(backspring.x, backspring.y);
    spring.display(backspring.x, backspring.y);
  }
}

class Spring2D {
  float vx, vy; // The x- and y-axis velocities
  float x, y; // The x- and y-coordinates
  float gravity;
  float mass;
  float radius = 10;
  float stiffness = 0.3;
  float damping = 0.7;
  
  Spring2D(float xpos, float ypos, float m, float g) {
    x = xpos;
    y = ypos;
    mass = m;
    gravity = g;
  }
  
  void update(float targetX, float targetY) {
    float forceX = (targetX - x) * stiffness;
    float ax = forceX / mass;
    vx = damping * (vx + ax);
    x += vx;
    float forceY = (targetY - y) * stiffness;
    forceY += gravity;
    float ay = forceY / mass;
    vy = damping * (vy + ay);
    y += vy;
  }
  
  void display(float nx, float ny) {
    rect(x, y, 40, 20);
  }
}

thanks in advance

Hi, 

this is the first time I am usig the openCV library. I got the following piece of 
code from the openCV website

while I was dissecting the code, I am not able to understand two things.

1) If I increase the size to(1024, 768) or (800, 600) the framerate drops instantly to 
   less than half. (I checked the camera capture at 1024*768 works fine without the 
   face recognition.) 
2) Also the framerate drops, as soon as the faces are detected
   (Rectangle[] faces = opencv.detect();) is executed.

Can someone please help me out with this issue. 


Thanks in advance






import hypermedia.video.*; 
import java.awt.Rectangle; 

OpenCV opencv; void setup() { 

size( 320, 240 ); 
opencv = new OpenCV(this); 
opencv.capture( width, height ); 

opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT ); 

 } 

void draw() { 

opencv.read(); 
image( opencv.image(), 0, 0 ); 

Rectangle[] faces = opencv.detect(); 

noFill(); 
stroke(255,0,0); 
for( int i=0; i<faces.length; i++ ) { 

rect( faces[i].x, faces[i].y, faces[i].width, faces[i].height ); 
 
 } 
}