Brightening or Darkening an RGB Buffered Image
This example demonstrates how to brighten or darken an RGB
buffered image by scaling the red, green, and blue values
in the image.
If the image is not an RGB image, the following code converts
a non-RGB image to an RGB buffered image:
// To create a buffered image, see Creating a Buffered Image
// Brighten the image by 30%
float scaleFactor = 1.3f;
RescaleOp op = new RescaleOp(scaleFactor, 0, null);
bufferedImage = op.filter(bufferedImage, null);
// Darken the image by 10%
scaleFactor = .9f;
op = new RescaleOp(scaleFactor, 0, null);
bufferedImage = op.filter(bufferedImage, null);
// Get non-RGB image
Image image = new ImageIcon("image.gif").getImage();
// Create an RGB buffered image
BufferedImage bimage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB);
// Copy non-RGB image to the RGB buffered image
Graphics2D g = bimage.createGraphics();
g.drawImage(image, 0, 0, null);
g.dispose();
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