ading an image over face detection.

in Contributed Library Questions • 1 year ago

im looking for a way to upload an image over a face recognition sketch, the idea is that the sketch can put "masks" over peoples faces when they pass in front of the webcam, preferably s gif image so the masks can have movement. i have tried it with the opencv face recognition sketch but don't really understand it that much, if someone here can help me out, that would be great.

Replies(2)

asimes

Re: ading an image over face detection.

1 year ago

OpenCV comes with a face detection example that places a rectangle over faces. faces[i].x and faces[i].y will give you the top left of the face and faces[i].width and faces[i].height will give you the area of the rectangle.

If you want to find the center of a face use:

xCenter = faces[i].x+faces[i].width/2;

yCenter = faces[i].y+faces[i].height/2;

enzomavk

Re: ading an image over face detection.

1 year ago

ok, i dont really know where to put that code in, this is what i got so far, its kind of funny but not what i want for my project. how could i make this better, also is it posible to make an array of images, eventuallly even small giff animations, into where the face is recognized? how complicated would all of this be?

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

OpenCV opencv;

// contrast/brightness values
int contrast_value    = 0;
int brightness_value = 0;

Rectangle[] lastfaces;

PFont font;
String s;
PImage img;
float angle;
PImage p1;

float n = 1;

void setup() {

size(screen.width, screen.height);
    //size( 320, 240 );
     frameRate( 30 );

      p1 = loadImage("Cloudyshared.png");

    opencv = new OpenCV( this );
    opencv.capture( width, height );                   // open video stream
    opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT ); // load detection description, here-> front face detection : "haarcascade_frontalface_alt.xml"

}

public void stop() {
    opencv.stop();
    super.stop();
}

void draw() {

    // grab a new frame
    // and convert to gray
    opencv.read();
    opencv.convert( GRAY );
    opencv.contrast( contrast_value );
    opencv.brightness( brightness_value );

    // proceed detection
    Rectangle[] faces = opencv.detect( 1.2, 2, OpenCV.HAAR_DO_CANNY_PRUNING, 40, 40 );

    // display the image
    image( opencv.image(), 0, 0 );


    // to smooth it out
    if( faces.length > 0 ) {
       lastfaces = faces;
    }
if( lastfaces != null ) {
      for( int i=0; i<lastfaces.length; i++ ) {
        pushMatrix();
        translate(lastfaces[i].x+110, lastfaces[i].y+110);

        if( p1 != null )
        {
          imageMode(CENTER);
          rectMode(CENTER);


         /** float scaleFactorW = ((float)lastfaces[i].width / (float)p1.width);
          float scaleFactorH = ((float)lastfaces[i].height / (float)p1.height);
          float scaleFactor = (scaleFactorW > scaleFactorH) ? scaleFactorW : scaleFactorH;
          if( scaleFactor < 0 ) scaleFactor = -scaleFactor;
          scale(scaleFactor * 1.2); **/

          ellipse(0,0,280,0);




            //rotate(angle);
          image(p1,-100,-100);

         // rotate(-angle);
         // image(p2,0,0);

          imageMode(CORNER);
          rectMode(CORNER);
        }

        popMatrix();
      }
    }

    }

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