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Sunday, 4 December 2016

Ajith KP

Skin Detection Algorithm - Implementation in Java

Hi GuyZ,,,
          I'm working on mini project to complete my MCA course. This is one of the partial application which I'm doing. This is an implementation of skin detection algorithm in Java. The algorithm implemented are found in http://kilyos.ee.bilkent.edu.tr/~signal/defevent/papers/cr1214.pdf, https://arxiv.org/ftp/arxiv/papers/1008/1008.4206.pdf
          Three algorithms implemented in this application are,
  • RGB skin cluster
  • YCbCr skin cluster
  • HSV skin cluster
Skin detection algorithm implementation
Original Image

Skin detection algorithm implementation
After Process
Skin detection algorithm implementation
Original
Skin detection algorithm implementation
After Process


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Source Code

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

/**
 *
 * @author Ajith Kp [fb.com/ajithkp560]
 * (c) _TERMINAL_CODERS_ (c) http://www.terminalcoders.blogspot.com
 */
public class FaceRecMain extends JFrame{
    JButton openB = new JButton("Open");
    JPanel imagePanel = new JPanel();
    JPanel menuPanel = new JPanel();
    FaceRecMain(){
        super("Skin Detection Application");
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        setMaximizedBounds(env.getMaximumWindowBounds());
        setExtendedState(getExtendedState() | MAXIMIZED_BOTH);
        openB.addActionListener(new ActionListener(){
            @Override
            public void actionPerformed(ActionEvent e) {
                JFileChooser fc = new JFileChooser();
                int returnVal = fc.showOpenDialog(FaceRecMain.this);
                if (returnVal == JFileChooser.APPROVE_OPTION) {
                    try {
                        File imgf = fc.getSelectedFile();
                        imagePanel.removeAll();
                        setPic(imgf);
                    } catch (IOException ex) {
                    }
                }
            }
        });
        menuPanel.add(openB);
        add(menuPanel, BorderLayout.NORTH);
        add(imagePanel, BorderLayout.CENTER);
    }
    int max(int r, int g, int b){
        if(r>g && r>b)
            return r;
        if(g>r && g>b)
            return g;
        return b;
    }
    int min(int r, int g, int b){
        if(r<g && r<b)
            return r;
        if(g<r && g<b)
            return g;
        return b;
    }
    boolean isSkin(int r, int g, int b){
        if(r>95 && g>40 && b>20){
            if((max(r,g,b)-min(r,g,b))>15){
                if(Math.abs(r-g)>15 && r>g && r>b){
                    return true;
                }
            }
        }
        return false;
    }
    boolean YCbCr(int r, int g, int b){
        double Y = (0.257*r)+(0.504*g)+(0.098*b)+16; 
        double Cb = -(0.148*r)-(0.291*g)+(0.439*b)+128;
        double Cr = (0.439*r) - (0.368*g) - (0.071*b) + 128;
        if(Cr>=(1.5862*Cb)+20)
            return false;
        if(Cr<=((0.3448*Cb)+76.2069))
            return false;
        if(Cr<=((-4.5652*Cb)+234.5652))
            return false;
        if(Cr>=((-1.15*Cb)+301.75))
            return false;
        if(Cr>=((-2.2857*Cb)+432.85))
            return false;
        return true;
    }
    boolean HSI(int r, int g, int b){
        int mx = max(r,g,b);
        int mn = min(r,g,b);
        double d = mx-mn;
        double h = 0;
        if(mx==r)
            h = (g-b)/d;
        else if(mx==g)
            h = 2+(b-r)/d;
        else
            h = 4+(r-g)/d;
        h = h*60;
        if(h<0)
            h+=360;
        if(h>4 && h<45)
            return true;
        return false;
    }
    public void setPic(File imgf) throws IOException
    {
        BufferedImage myImg = ImageIO.read(imgf);
        int w = myImg.getWidth();
        int h = myImg.getHeight();
        
        int r, g, b;
        for(int i=0;i<w;i++)
        {
            for(int j=0;j<h;j++)
            {
                Color c = new Color(myImg.getRGB(i, j));
                r=c.getRed();
                g=c.getGreen();
                b=c.getBlue();
                if(isSkin(r,g,b) && YCbCr(r,g,b) && HSI(r,g,b)){
                    //The skin detected
                }
                else{
                    myImg.setRGB(i, j, new Color(0, 0, 0, 0).getRGB());
                    //Set black color if not a skin part
                }
            }
        }
        JLabel picLabel = new JLabel(new ImageIcon(myImg));
        imagePanel.add(picLabel);
        imagePanel.revalidate();
        imagePanel.repaint();
    }
    public static void main(String[] args) {
        FaceRecMain frm=new FaceRecMain();
        frm.setSize(700, 500);
        frm.setVisible(true);
        frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

6 comments

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28 December 2016 at 22:22 delete

Informative post of Skin Detection Algorithm - Implementation in Java.

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Anonymous
AUTHOR
9 February 2017 at 00:53 delete

Thanks for code. I was seeking code for skin detection.

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Anonymous
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13 February 2017 at 07:44 delete

I'm looking for skin detection algorithm.

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Anonymous
AUTHOR
14 February 2017 at 06:03 delete

Thanks for java code

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Anonymous
AUTHOR
2 April 2017 at 09:09 delete

Thanks for code

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22 September 2017 at 02:21 delete

waoo nice post about Skin Detection Algorithm - Implementation in Java.

Thanks,

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