package image_test;

​

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

​

public class Image_test {

​

    public static void main(String[] args) {

        BufferedImage img = null;

        try {

            img = ImageIO.read(new File("test.bmp"));

        } catch (IOException e) {

        }

        int height = img.getHeight();

        int width = img.getWidth();

        int amountPixel = 0;

        int amountBlackPixel = 0;

        int rgb;

        int red;

        int green;

        int blue;

        double percentPixel = 0;

​

        System.out.println(height  + "  " +  width + " " + img.getRGB(30, 30));

        for (int h = 0; h<height; h++)

        {

            for (int w = 0; w<width; w++)

            {

                amountPixel++;

                rgb = img.getRGB(w, h);

                red = (rgb >> 16 ) & 0x000000FF;

                green = (rgb >> 8 ) & 0x000000FF;

                blue = (rgb) & 0x000000FF;

                if (red == 0 && green == 0 && blue == 0)

                {

                    amountBlackPixel ++;

                }

            }

        }

        percentPixel = (double)amountBlackPixel / (double)amountPixel;

        System.out.println("amount pixel: "+amountPixel);

        System.out.println("amount black pixel: "+amountBlackPixel);

        System.out.println("amount pixel black percent: "+percentPixel);

    }

}