remove BufferedImage Background - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage

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Description

remove BufferedImage Background

Demo Code


//package com.java2s;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;

public class Main {
    public static void main(String[] argv) throws Exception {
        String picFile = "java2s.com";
        System.out.println(removeBackground(picFile));
    }//from   ww  w  . j a va 2s .co  m

    private static BufferedImage removeBackground(String picFile)
            throws Exception {

        BufferedImage img = ImageIO.read(new File(picFile));
        int width = img.getWidth();
        int height = img.getHeight();
        for (int x = 0; x < width; ++x) {
            for (int y = 0; y < height; ++y) {
                if (isWhite(img.getRGB(x, y)) == 1) {
                    img.setRGB(x, y, Color.WHITE.getRGB());
                } else {
                    img.setRGB(x, y, Color.BLACK.getRGB());
                }
            }
        }
        ImageIO.write(img, "JPG", new File("./captcha/random.jpg"));
        return img;
    }

    private static int isWhite(int colorInt) {

        Color color = new Color(colorInt);
        if (color.getRed() + color.getGreen() + color.getBlue() > 400) {
            return 1;
        }
        return 0;
    }
}

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