Lina Maria Giraldo's Blog

source code:

// Lina Maria Giraldo
// homework week 7 based on example 16.1 15.7 17.1
// http://www.linamariagiraldo.com

// Declare PFont variable
PFont f;

// Step 1. Import the video library
import processing.video.*;

// Step 2. Declare a Capture object
Capture video;

void setup() {
  size(320,240);
  smooth();

  // Step 3. Initialize Capture object via Constructor
  // video is 320 x 240, @15 fps
  video = new Capture(this,320,240,15);

  //Load Font
  f = loadFont( "font.vlw" );
}

void draw() {

  // Check to see if a new frame is available
  if (video.available()) {
    // If so, Step 4. Read the image from the camera.
    video.read();
  }

  // Display the video image.
  image(video,0,0);

  int loc = (width/2)+((height/2)*width);//find the pixel in the middle of the scree
  video.loadPixels();//we can modifie the pixels
  float r = red (video.pixels [loc]);//find the values of red green and blue
  float g = green (video.pixels [loc]);
  float b =blue(video.pixels [loc]);

  textFont(f,32); // Specify font to be used
  fill(255,0,0);        //Specify font colora
   text ( "R=" + r ,10,40);   //  Display Text
  fill(0,255,0);        //Specify font color
   text ( "G="+ g ,10,100);   //  Display Text
fill(0,0,255);        //Specify font color
   text ( "B="+ b ,10,160);   //  Display Text

 noFill();
stroke(0);
   ellipse(width/2,height/2,10,10);
stroke(255);
   ellipse(width/2,height/2,13,13);

}