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open bitmap image in java

Macheri Daniel Esrom answered on August 26, 2022 Popularity 5/10 Helpfulness 2/10

answer open bitmap image in java

open bitmap image in java

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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);
    }
}

Popularity 5/10 Helpfulness 2/10 Language java

Source: stackoverflow.com

Tags: bitmap image java

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Contributed on Aug 26 2022

Macheri Daniel Esrom

0 Answers Avg Quality 2/10

open bitmap image in java

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