Counting Pixels

[shaungoater]

I am using a buffered image and wish to count the pixels in the image to determine the most prominent colors. I have done some research and think i need to use the ColorModel class. If anyone could tell me how to implement this
and use the ColorModel class it would be greatly appreciated.
Thanks

[hardwired]

the most prominent colors
By this do you mean the colors that occur with the highest frequency, colors with particular qualities, or specific/target colors?

[shaungoater]

I would like to obtain a count of the number of red blue and green colours

[hardwired]

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;

public class ColorCount {
    public static void main(String[] args) throws IOException {
        String path = pathToImage
        BufferedImage image = ImageIO.read(new File(path));
        int redCount = 0, greenCount = 0, blueCount = 0;
        int red   = Color.red.getRGB();
        int green = Color.green.getRGB();
        int blue  = Color.blue.getRGB();
        System.out.printf("red = %d  green = %d  blue = %d%n",
                           red, green, blue);
        int w = image.getWidth();
        int h = image.getHeight();
        for(int y = 0; y < h; y++) {
            for(int x = 0; x < w; x++) {
                int pixel = image.getRGB(x, y);
                if(pixel == red)   redCount++;
                if(pixel == green) greenCount++;
                if(pixel == blue)  blueCount++;
            }
        }
        System.out.printf("redCount = %d  greenCount = %d  blueCount = %d%n",
                           redCount, greenCount, blueCount);
    }
}

[shaungoater]

Thanks for the excellent help your code was very useful. Could you please explain what the following code does especially the role of "d" and "n".

("red = %d green = %d blue = %d%n",
red, green, blue);

[hardwired]

Formatter class was introduced in j2se 1.5
d: format the value to an integer
n: new line.