Lab9-Blend-Chromakey

JLab>javac Blend.java ChromaKey.java Mirror.java
JLab>
JLab>java Selftest 

JLab> testBlend     : ok ok ok ok ok  (5.0/5.0)
JLab> testChromaKey : ok ok ok ok ok  (5.0/5.0)
JLab> : -----------------------------
JLab> : You got 10.0 points (out of 10.0)
JLab> : -----------------------------
JLab> :<POINT>10.0</POINT> (<TOTAL>10.0</TOTAL> )
JLab>

ChromaKey.java

import jlab.graphics.DWindow;

public class ChromaKey {

  public static void main(String[] args) {
    DWindow fg = new DWindow();
    fg.loadImage("bird.gif");
    int w = fg.getWidth();
    int h = fg.getHeight();

    DWindow bg = new DWindow();
    bg.loadImage("sky.jpg",w, h);
    DWindow out = new DWindow(w, h);
    
    fg.setLocation(10, 10);
    bg.setLocation(10 + fg.getWidth(), 10);
    out.setLocation(10 + 2*fg.getWidth(), 10);
  
    out.setPixmap(chromaKey(fg.getPixmap(), bg.getPixmap(), DWindow.GREEN));
  }
  //-----------------------------------------------------------------
  public static int[][] chromaKey(int[][] fg, int[][] bg, int c) {
    int w = fg.length;
    int h = fg[0].length;
    int[][] b = new int[w][h];
    for (int i = 0; i < b.length; i++) {
      for (int j = 0; j < b[i].length; j++) {
        if (fg[i][j] == c) {
          b[i][j] = bg[i][j];
        } else {
          b[i][j] = fg[i][j];
        }
      }
    }




    return b;
  }
  //-----------------------------------------------------------------
}

Blend.java

import jlab.graphics.DWindow;

public class Blend {
  public static void main(String[] args) {
    int w = 300, h = 300;
    DWindow pic1 = new DWindow(w, h);
    DWindow pic2 = new DWindow(w, h);
    DWindow out = new DWindow(w, h);
    pic1.loadImage("cat.jpg", w, h);
    pic2.loadImage("baby.jpg", w, h);
    pic1.setLocation(10, 10);
    pic2.setLocation(10 + w, 10);
    out.setLocation(10 + 2 * w, 10);
    while (true) {
      for (double a = 0; a <= 1; a += 0.1) {
        int[][] b = blend(pic1.getPixmap(), pic2.getPixmap(), a);
        out.setPixmap(b);
      }
      for (double a = 1; a >= 0; a -= 0.1) {
        int[][] b = blend(pic1.getPixmap(), pic2.getPixmap(), a);
        out.setPixmap(b);
      }
    }

  }
  //-----------------------------------------------------------------
  public static int[][] blend(int[][] b1, int[][] b2, double a) {
    int w = b1.length;
    int h = b1[0].length;
    int[][] b3 = new int[w][h];
    for (int i = 0; i < b3.length; i++) {
      for (int j = 0; j < b3[i].length; j++) {
        int r1 = DWindow.getR(b1[i][j]);
        int r2 = DWindow.getR(b2[i][j]);
        int g1 = DWindow.getG(b1[i][j]);
        int g2 = DWindow.getG(b2[i][j]);
        int B1 = DWindow.getB(b1[i][j]);
        int B2 = DWindow.getB(b2[i][j]);
        b3[i][j] = DWindow.mixRGB( (int)((1.0-a)*r2 + a*r1) , (int)((1.0-a)*g2 + a*g1 ), (int)((1.0-a)*B2 + a*B1 ));
      }
    }
 



    

    return b3;
  }
  //-----------------------------------------------------------------
}

SM=0, CM=5, ST=5, KY=621, TR=60:00
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;