Converting a BufferedImage to another type

Question

The most convenient method to read an image from a source (Files, InputStreams, URLs) is:

BufferedImage myImage = ImageIO.read( source );

But then, how to convert myImage to a BufferedImage.TYPE_USHORT_565_RGB format?

Hob

@user172825 Welcome to StackOverflow! I recommend you to change your username. – Residual

This is very helpful! +1 – Misfit

Answer 1

You can create a new BufferedImage of the required type and then draw the original image on it, something like:

    BufferedImage bufImg = ImageIO.read( imageURL );
    BufferedImage convertedImg = new BufferedImage(bufImg.getWidth(), bufImg.getHeight(), BufferedImage.TYPE_USHORT_565_RGB);
    convertedImg.getGraphics().drawImage(bufImg, 0, 0, null);

Scrofula

This is an old question, but once should not forget to use dispose() after using drawImage(). – Henriettahenriette

I know this is a common method, but it is also super slow. Is there anything faster? – Teal