Hello, I tryed to make the face detector example run, I took it from http://www.bryanchung.net/?page_id=251 (face detector library).

But I get the following message error:

"NULL pointer (Invalid classifier cascada)
in function cvCHaarDetectObjetc, c:\user\vp\opencv\cv\sarc\cvchaar.cpp(890)
Abort - termine application
retry - to debugg
ignore to continue"

As far as I understood it's not necessary to install OpenCV meanwhile I put the .xml in the sketch folder, and the cxcore100.dll, cv100.dll, libguide40.dll libraries in the Processing folder.

Thanks for any suggestions.
BTW. sorry for my english

Greets, ro

Hello, could you tell me how you installed the pFaceDetect library?. I don't know if I did it in the right way.
I didn't installed OpenCV, I undserstand it isn't necessary, correct me if I'm wrong.

I tryed to find an email or a 'comment place', to contact Bryan Chung (the author) and tell him about this issue. I haven't found any way to contact him yet.

Info: processing under Windows XP.

thanks, ro

Thank you for your reply. I have no idea if it is a dll issue.  I'd like to know if pFaceDetector library is well installed (where you copy the dll, the xml file, etc).

As soon as is possible I'll try your 'tip' and I'll post the result.
Greets, ro

I have re-installed OpenCv.
I have checked "Add \OpenCV\bin to system PATH" but it's the same...

Hello all!

I'm having the very same problem as stated here.

Has anyone got into a solution? If so, could you please share it here with others like me?

I'm using windows vista 32 bits, I have OpenCV installed, the .dlls are in the Processing root, OpenCV folders are in the environment variables path...

Thanks in advance!

Best regards!

Hello, I could run the face detector example, but I have to copy the .dll libraries on the sketch folder to make it works. The data folder with the .xml isn't enough by itself.
I take a look at the example that comes with the library and it has a folder named 'code' with these .dll, so I did the same.

I had to point these .dll in the env-var PATH?, if I do this, the code folder with the .dll ins't necessary.
Thanks, ro

Hi I'm not sure if this is the correct place to post this query.


I m working on a Final year project at uni using processing. The 2 libraries codes i m using are below.
[color=#ff0000][/color]

float mx = 425;
float my = 200;
float bulge = 0;
float leftdist;
float rightdist;
float fillr;
float fillg;
float fillb;
int cx = (x+(w / 2));  // Centre of Face X Axis
int cy = (y+(h / 2));  // // Centre of Face X Axis

void setup() {
 size(640,480);


}

void draw() {

     
 background(0);

 smooth();
 noStroke();
 //eye color
    if(mousePressed) {
   fillr = 255;
   fillg = 210;
   fillb = 0;
 }
 else{
 fillr = cx/5;
 fillg = 255;
 fillb = cy/2;
 }
 
 
 fill(fillr,fillg,fillb);
 
 pushMatrix();
 translate(215,200);
 rotate(PI/8);
 ellipse(0,0,95,70);
 popMatrix();
 
 fill(fillr,fillg,fillb);
 pushMatrix();
 translate(425,200);
 rotate(-PI/8);
 ellipse(0,0,95,70);
 popMatrix();


 //pupil movement
 float targetx = constrain(cx, 405, 445);// instead of WHATS THERE use cx  and cy
 float targety = constrain(cy, 195,205);
 float easing = 0.15;
 mx = mx + (targetx-mx)*easing;
 my = my + (targety-my)*easing;

 fill(0);
 smooth();

 if((mousePressed) && (bulge <= 10)) {
   bulge += 1;
 }
 else{
   if(bulge > 0){
     bulge -= 1;
   }
 }
 leftdist = dist(cx, cy, mx-210,my);
 rightdist = dist(cx,cy, mx, my);
 if((rightdist < 50) || (leftdist < 50 )){
   if(bulge > -10){
     bulge -= 1;
   }
 }
 else{
   if(bulge < 0){
     bulge += 1;
   }
 }

 arc(mx,my,25 + bulge,54 + bulge,-PI/2+1,3*PI/2);
 arc(mx-210,my,25 + bulge,54 + bulge,-PI/2+1,3*PI/2);



}

AND


import pFaceDetect.*;
import JMyron.*;

PFaceDetect face;
JMyron m;//a camera object
PImage img;

// Eyes Code
float mx = 425;
float my = 200;
float bulge = 0;
float leftdist;
float rightdist;
float fillr;
float fillg;
float fillb;



void setup() {
 size(640,480);
 m = new JMyron();
 m.start(width,height);
 m.findGlobs(0);
 face = new PFaceDetect(this,width,height,
 "haarcascade_frontalface_default.xml");
 frameRate(15);
 img = createImage(width,height,ARGB);
 rectMode(CORNER);
 noFill();
 stroke(255,0,0);
 smooth();
}

void draw() {
 background(0);
 
 
 m.update();
 arraycopy(m.cameraImage(),img.pixels);
 img.updatePixels();
 face.findFaces(img);
 image(img,0,0);
 drawFace();
}

void drawFace() {
 int [][] res = face.getFaces();
 if (res.length>0) {
   for (int i=0;i<res.length;i++) {
     int x = res[i][0];
     int y = res[i][1];
     int w = res[i][2];
     int h = res[i][3];
     rect(x,y,w,h);
     int cx = (x+(w / 2));  // Centre of Face X Axis
     int cy = (y+(h / 2));  // // Centre of Face X Axis
     println ("centre = "+cx+" , "+cy+"    size = "+w+"  x  "+h);

 
   }
 }
}


My goal is combine them so that the eyes move in realtion to the face detect any thoughts??

Thanks