main.java
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// Java program to demonstrate // colored to negative conversion import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; public class Negative { public static void main(String args[]) throws IOException { BufferedImage img = null; File f = null; // read image try { f = new File( "C:/Users/hp/Desktop/Image Processing in Java/gfg-logo.png"); img = ImageIO.read(f); } catch (IOException e) { System.out.println(e); } // Get image width and height int width = img.getWidth(); int height = img.getHeight(); // Convert to negative for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { int p = img.getRGB(x, y); int a = (p >> 24) & 0xff; int r = (p >> 16) & 0xff; int g = (p >> 8) & 0xff; int b = p & 0xff; // subtract RGB from 255 r = 255 - r; g = 255 - g; b = 255 - b; // set new RGB value p = (a << 24) | (r << 16) | (g << 8) | b; img.setRGB(x, y, p); } } // write image try { f = new File( "C:/Users/hp/Desktop/Image Processing in Java/GFG.png"); ImageIO.write(img, "png", f); } catch (IOException e) { System.out.println(e); } } } |
