Add files via upload

joeyajames · web-flow · commit 73068683daa2 · 2023-01-02T12:40:24.000-06:00
diff --git a/Image Filters/ImageFilter.java b/Image Filters/ImageFilter.java
@@ -0,0 +1,76 @@
+import java.util.*;
+import java.awt.*;
+import java.awt.image.*;
+import java.io.*;
+import javax.imageio.ImageIO;
+import javax.swing.*;
+import java.awt.geom.AffineTransform;
+
+public class ImageFilter {
+
+	public static void main(String[] args) {
+		File file = new File("photo.png");
+		BufferedImage img = null;
+
+		try { img = ImageIO.read(file); } 
+		catch (IOException e) { e.printStackTrace(System.out); }
+
+		if (img != null) {
+			display(img);
+			img = toGrayScale2(img);
+			display(img);
+		}
+	}
+
+	// display image in a JPanel popup
+	public static void display (BufferedImage img) {
+		System.out.println("  Displaying image.");
+		JFrame frame = new JFrame();
+	    JLabel label = new JLabel();
+		frame.setSize(img.getWidth(), img.getHeight());
+		label.setIcon(new ImageIcon(img));
+		frame.getContentPane().add(label, BorderLayout.CENTER);
+		frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+		frame.pack();
+		frame.setVisible(true);
+	}
+	// convert image to grayscale
+	public static BufferedImage toGrayScale (BufferedImage img) {
+		System.out.println("  Converting to GrayScale.");
+		BufferedImage grayImage = new BufferedImage(
+			img.getWidth(), img.getHeight(), BufferedImage.TYPE_BYTE_GRAY);
+		Graphics g = grayImage.getGraphics();
+		g.drawImage(img, 0, 0, null);
+		g.dispose();
+		return grayImage;
+	}
+	public static BufferedImage toGrayScale2 (BufferedImage img) {
+		System.out.println("  Converting to GrayScale2.");
+		BufferedImage grayImage = new BufferedImage(
+			img.getWidth(), img.getHeight(), BufferedImage.TYPE_BYTE_GRAY);
+		int p=0, rgb=0, r=0, g=0, b=0;
+		for (int y=0; y<img.getHeight()-1; y++) {
+			for (int x=0; x<img.getWidth()-1; x++) {
+				rgb = (int)(img.getRGB(x, y));
+				r = ((rgb >> 16) & 0xFF);
+				g = ((rgb >> 8) & 0xFF);
+				b = (rgb & 0xFF);
+				p = (int)(0.2126 * r + 0.7152 * g + 0.0722 * b);
+				p = (255<<24) | (p<<16) | (p<<8) | p;
+				grayImage.setRGB(x,y,p);
+			}
+		}
+		return grayImage;
+	}
+}
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