Programmierung Gesichtserkennung mit der Web-Camera

Programmierung Gesichtserkennung mit der Web-Camera Author D.Selzer-McKenzie   import processing.video.*; import monclubelec.javacvPro.*; import java.awt.*; // pour classes Point , Rectangle.. import java.util.*; // Für WebCam: Capture cam1; //GSMovie cam1;   OpenCV opencv; // deklariert ein OpenCV Objekt Rectangle[] faceRect;   // A list of my Face objects ArrayList faceList;   // how many have I found over all time int faceCount = 0;   float  sum=0; int scl=1; int frame=0; boolean delFaces;   void setup() {   // Für WebCam: cam1= new Capture(this, 1280, 720); //cam1 = new GSMovie(this, "maus.mov");   // für WebCam auskommentieren: //cam1.play(); cam1.start();   // initialisiert OpenCV --- opencv = new OpenCV(this);   //Vorsicht: bei der Arbeit mit einer Datei muss die Größe genau passen!!! //opencv.allocate(640, 360); opencv.allocate(cam1.width, cam1.height);   // Für WebCam: // opencv.allocate(cam1.getSourceWidth(), cam1.getSourceHeight()); // initialisiert die Buffer von OpenCV size (opencv.width(), opencv.height());   // Laden Beschreibungsdatei opencv.cascade("/usr/share/opencv/haarcascades/", "haarcascade_frontalface_alt_tree.xml");   // Liste mit den Gesichtsobjekten faceList = new ArrayList(); }   void draw() {   // Dateien und die WebCam brauchen etwas Zeit zum Laden if (cam1.available()) {   // Einzelne Frames werden gelesen cam1.read(); opencv.copy(cam1);   // Schnitt oder Kameraschwenk erkennen println(abs(opencv.sum()-sum)/1000000); if (abs(opencv.sum()-sum)/1000000 >7) delFaces=true; else delFaces=false; sum=opencv.sum();   // Erkennen faceRect = opencv.detect(false);   image(opencv.getBuffer(), 0, 0);   //Rechteck zeichnen //opencv.drawRectDetect(true);   // Code ab hier von Daniel Shiffman // SCENARIO 1: faceList is empty if (faceList.isEmpty()) { // Just make a Face object for every face Rectangle for (int i = 0; i < faceRect.length; i++) { faceList.add(new Face(faceRect[i].x, faceRect[i].y, faceRect[i].width, faceRect[i].height)); } // SCENARIO 2: We have fewer Face objects than face Rectangles found from OPENCV } else if (faceList.size() <= faceRect.length) { boolean[] used = new boolean[faceRect.length]; // Match existing Face objects with a Rectangle for (Face f : faceList) { // Find faces[index] that is closest to face f // set used[index] to true so that it can't be used twice float record = 50000; int index = -1; for (int i = 0; i < faceRect.length; i++) { float d = dist(faceRect[i].x, faceRect[i].y, f.r.x, f.r.y); if (d < record && !used[i]) { record = d; index = i; } } // Update Face object location used[index] = true; f.update(faceRect[index]); } // Add any unused faces for (int i = 0; i < faceRect.length; i++) { if (!used[i]) { faceList.add(new Face(faceRect[i].x, faceRect[i].y, faceRect[i].width, faceRect[i].height)); } } // SCENARIO 3: We have more Face objects than face Rectangles found } else { // All Face objects start out as available for (Face f : faceList) { f.available = true; } // Match Rectangle with a Face object for (int i = 0; i < faceRect.length; i++) { // Find face object closest to faces[i] Rectangle // set available to false float record = 50000; int index = -1; for (int j = 0; j < faceList.size(); j++) { Face f = faceList.get(j); float d = dist(faceRect[i].x, faceRect[i].y, f.r.x, f.r.y); if (d < record && f.available) { record = d; index = j; } } // Update Face object location Face f = faceList.get(index); f.available = false; f.update(faceRect[i]); } // Start to kill any left over Face objects for (Face f : faceList) { if (f.available) { f.countDown(); if (f.dead()) { f.delete = true; } } } }   // Delete any that should be deleted for (int i = faceList.size()-1; i >= 0; i--) { Face f = faceList.get(i); // Bei einem Schnitt werden alle Gesichter sofort gelöscht if (f.delete || delFaces) { faceList.remove(i); } }   // Draw all the faces for (int i = 0; i < faceRect.length; i++) { noFill(); stroke(255, 0, 0); rect(faceRect[i].x*scl, faceRect[i].y*scl, faceRect[i].width*scl, faceRect[i].height*scl); }   for (Face f : faceList) { f.display(); } } }   void keyReleased() { if (key == 's' || key == 'S') saveFrame(timestamp()+"_##.png");   // for Movie //frame+=500; //cam1.jump(frame); //cam1.play(); }   // timestamp String timestamp() { Calendar now = Calendar.getInstance(); return String.format("%1$ty%1$tm%1$td_%1$tH%1$tM%1$tS", now); }   // Which Face Is Which // Daniel Shiffman // April 25, 2011 // http://www.shiffman.net   class Face {   // A Rectangle Rectangle r;   // Am I available to be matched? boolean available;   // Should I be deleted? boolean delete;   // How long should I live if I have disappeared? int timer = 63;   // Assign a number to each face int id;   // Make me Face(int x, int y, int w, int h) { r = new Rectangle(x, y, w, h); available = true; delete = false; id = faceCount; faceCount++; }   // Show me void display() { fill(0, 0, 255, timer*2); stroke(0, 0, 255); rect(r.x*scl, r.y*scl, r.width*scl, r.height*scl); fill(255, timer*2); text(""+id, r.x*scl+10, r.y*scl+30); }   // Give me a new location / size // Oooh, it would be nice to lerp here! void update(Rectangle newR) { r = (Rectangle) newR.clone(); }   // Count me down, I am gone void countDown() { timer--; }   // I am deed, delete me boolean dead() { if (timer < 0) return true; return false; } }