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1. import processing.video.*;
2. // Capturar Video
3. Capture video;
4. // Declaración de Variables
5. int numcolores=4, t;
6. color [] trackcolor = new color [numcolores]; // Colores a Buscar
7. // Setup
8. void setup() {
9.   size(400, 240); // Tamaño Ventana
10.   video = new Capture(this, 320, 240, 30);
11.   //
12.   trackcolor  = color(255, 0, 0); //Comenzar Rojo
13.   smooth();
14. }
15. void draw() {
16.   // Capture and display the video
17.   if (video.available()) {
18.     video.read();
19.   }
20.   video.loadPixels();
21.   image(video, 0, 0, 320, 240);
22.   float worldRecord = 500;
23.   int closestX = 0; // XY coordinate of closest color
24.   int closestY = 0;
25.   // Begin loop to walk through every pixel
26.   for (int x = 0; x < video.width; x ++ ) {
27.     for (int y = 0; y < video.height; y ++ ) {
28.       int loc = x + y*video.width;
29.       // Color Actual
30.       color currentColor = video.pixels[loc];
31.       float r1 = red(currentColor);
32.       float g1 = green(currentColor);
33.       float b1 = blue(currentColor);
34.       for (t=0;t<numcolores;t++) {
35.         if (colores[k]==color(0, 0, 0)) {
36.         }
37.         else {
38.           float r2 = red(trackcolor[t]);
39.           float g2 = green(trackcolor[t]);
40.           float b2 = blue(trackcolor[t]);
41.           // Using euclidean distance to compare colors
42.           d[t] = dist(r1, g1, b1, r2, g2, b2); // We are using the dist( ) function to compare the current color with the color we are tracking.
43.           // If current color is more similar to tracked color than
44.           // closest color, save current location and current difference
45.           if (d[t] < worldRecord) {
46.             worldRecord = d;
47.             closestX = x;
48.             closestY = y;
49.           }
50.         }
51.       }
52.       // We only consider the color found if its color distance is less than 10.
53.       // This threshold of 10 is arbitrary and you can adjust this number depending on how accurate you require the tracking to be.
54.       if (worldRecord < 10) {
55.         // Draw a circle at the tracked pixel
56.         fill(trackcolor);
57.         strokeWeight(4.0);
58.         stroke(0);
59.         ellipse(closestX, closestY, 16, 16);
60.       }
61.     }
62.   }
63. }
64. //void mousePressed() {
65. //  // Save color where the mouse is clicked in trackcolor variable
66. //  int loc = mouseX + mouseY*video.width;
67. //  trackcolor = video.pixels[loc];
68. //}
69. // Al Presionar una tecla, ir guardando colores a buscar
70. void keyPressed() {
71.   if (key=='1') {       // Ficha Color 1
72.     int loc = mouseX + mouseY*video.width;
73.     trackcolor[0] = video.pixels[loc];
74.   }
75.   else if (key=='2') { // Ficha Color 2
76.     int loc = mouseX + mouseY*video.width;
77.     trackcolor[1]= video.pixels[loc];
78.   }
79.   else if (key=='3') { // Robot Adelante
80.     int loc = mouseX + mouseY*video.width;
81.     trackcolor[2] = video.pixels[loc];
82.   }
83.   else if (key=='4') { // Robot Atras
84.     int loc = mouseX + mouseY*video.width;
85.     trackcolor[3] = video.pixels[loc];
86.   }
87.   else {
88.   }
89. }