invert Black And White BufferedImage - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage Color

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Description

invert Black And White BufferedImage

Demo Code


//package com.java2s;
import java.awt.Color;
import java.awt.image.BufferedImage;

public class Main {
    public static BufferedImage invertBlackAndWhite(BufferedImage image) {
        BufferedImage imageOut = getBlackImage(image.getWidth(),
                image.getHeight());//from  ww  w .j a  v  a  2  s  . com
        for (int i = 0; i < image.getWidth(); i++) {
            for (int j = 0; j < image.getHeight(); j++) {
                Color c = new Color(image.getRGB(i, j));
                //invert white into black
                if (c.equals(Color.white)) {
                    imageOut.setRGB(i, j, Color.black.getRGB());
                }
                //invert black into white
                else if (c.equals(Color.black)) {
                    imageOut.setRGB(i, j, Color.white.getRGB());
                }
                //copy the other colors
                else {
                    imageOut.setRGB(i, j, image.getRGB(i, j));
                }

            }
        }

        return imageOut;
    }

    public static BufferedImage getBlackImage(int width, int height) {
        BufferedImage image = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_ARGB);

        for (int i = 0; i < width - 1; i++) {
            for (int j = 0; j < height - 1; j++) {
                image.setRGB(i, j, Color.black.getRGB());
            }
        }

        return image;
    }
}

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