June 2005
Beginner to intermediate
336 pages
6h 29m
English
Content preview from Java™ After Hours: 10 Projects You'll Never Do at Work
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Brightening an Image
If the user clicks the Brighten button, Graphicizer brightens the image, as you can see in Figure 3.6.
Figure 3.6. Brightening an image.
To brighten an image, you simply multiply the intensity of each pixel. In this case, all you need is a one-dimensional kernel. Here's what the code looks like, complete with Kernel and ConvolveOp objects:
if(event.getSource() == button3){
bufferedImageBackup = bufferedImage;
Kernel kernel = new Kernel(1, 1, new float[] {3});
ConvolveOp convolveOp = new ConvolveOp(kernel);
BufferedImage temp = new BufferedImage(
bufferedImage.getWidth(), bufferedImage.getHeight(),
BufferedImage.TYPE_INT_ARGB); ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.