Creating a grayscale picture

Question

Hello!
I have such an array:int[][] testArray = new int[heightOfImage][widthOfImage];The array is filled with numbers from 0..255. How could I create a gray scaled tiff image with JAI?
I found this line, but how could I set the imageVariable from my testArray and how could I set it it that it will be grayscaled?
JAI.create("filestore", imageVariable, "myNewTiff.tiff", "TIFF");Does anyone know?
Thanks a lot in advance & Best Regards.

Answer 1

PHANTOMIAS wrote:
..The array is filled with numbers from 0..255. How could I create a gray scaled Convert it to grayscale before doing anything else. E.G.
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
import javax.imageio.*;
import java.net.URL;
class ToGrayscale {
    public static void main(String[] args) throws Exception {
        URL url = new URL("http://pscode.org/media/stromlo1.jpg");
        Image image = ImageIO.read(url);
        BufferedImage bi = new BufferedImage(
            image.getWidth(null),
            image.getHeight(null),
            BufferedImage.TYPE_BYTE_GRAY);
        Graphics g = bi.createGraphics();
        g.drawImage( image, 0, 0, null );
        JPanel p = new JPanel(new GridLayout(0,1));
        p.add( new JLabel(new ImageIcon(image)) );
        p.add( new JLabel(new ImageIcon(bi)) );
        JOptionPane.showMessageDialog(null, p);
..tiff image with JAI?
I found this line, but how could I set the imageVariable from my testArray and how could I set it it that it will be grayscaled?
JAI.create("filestore", imageVariable, "myNewTiff.tiff", "TIFF");Does anyone know?<DWS>Of course not. You are the first person in the history of computing to consider such an idea - you maverick.</DWS>