Displaying a buffered image with a predifined colormap

[Isaac Gerg]

Hello all,
I have a matrix (normalized [0,1]) that I would like to display as an
image (similar to matlabs imagesc( )). I am able to load it into a buffered
image and display it but it only displays in grayscale. I would like to
provide a colormap to it so that it mimics matlabs 'jet' colormap. Any
ideas on how to do this? Are there any 'cookbook' type resources for java
imaging out there?

Isaac

 

[ak]

I have a matrix (normalized [0,1]) that I would like to display as an

image (similar to matlabs imagesc( )). I am able to load it into a buffered
image and display it but it only displays in grayscale. I would like to
provide a colormap to it so that it mimics matlabs 'jet' colormap. Any
ideas on how to do this?

you should pass appropriate IndexColorModel to constructor of BufferedImage

 

[Isaac Gerg]

I got that working. Thank you.

Now, how do I display the image in a window? This program is console
program.

 

[ak]

Now, how do I display the image in a window? This program is console

program.

there are many ways...

for example :

Image image = ...;
ImageIcon icon = new ImageIcon(image);
JLabel label = new JLabel(icon);
JFrame frame = new JFrame();
frame.getContentPane().add(new JScrollPane(label));
frame.pack();
frame.show();