...

pom.xml

@@ -327,6 +327,13 @@
 			<version>1.5.1</version>
 		</dependency>
 	
+		<!-- https://mvnrepository.com/artifact/net.sourceforge.tess4j/tess4j -->
+		<dependency>
+		    <groupId>net.sourceforge.tess4j</groupId>
+		    <artifactId>tess4j</artifactId>
+		    <version>4.5.3</version>
+		</dependency>
+		
 	</dependencies>
 	
 	<build>

src/main/java/kr/co/swh/lecture/opensource/ocr/ImageToText.java

@@ -0,0 +1,39 @@
+package kr.co.swh.lecture.opensource.ocr; 
+
+import java.io.File;
+
+import net.sourceforge.tess4j.Tesseract;
+import net.sourceforge.tess4j.TesseractException;
+
+/**
+ * <pre>
+ * kr.co.swh.lecture.opensource.ocr 
+ * ImageToText.java
+ *
+ * 설명 :
+ * </pre>
+ * 
+ * @since : 2020. 10. 25.
+ * @author : tobby48
+ * @version : v1.0
+ */
+public class ImageToText {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		File image = new File("src/main/resources/ocr/sample.jpg");
+		Tesseract tesseract = new Tesseract();
+		tesseract.setDatapath("src/main/resources/ocr/result");
+		tesseract.setLanguage("ko");
+		tesseract.setPageSegMode(1);
+		tesseract.setOcrEngineMode(1);
+		try {
+			String result = tesseract.doOCR(image);
+			System.out.println(result);
+		} catch (TesseractException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+
+}

src/main/java/kr/co/swh/lecture/opensource/ocr/LineDraw_Quiz.java

@@ -0,0 +1,56 @@
+package kr.co.swh.lecture.opensource.ocr;
+
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseMotionAdapter;
+import java.awt.geom.Line2D;
+import java.util.ArrayList;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+public class LineDraw_Quiz extends JPanel {
+	private final ArrayList<Point> point = new ArrayList<>();
+
+	public LineDraw_Quiz() {
+		addMouseListener(new MouseAdapter() {
+			public void mousePressed(MouseEvent event) {
+				point.add(event.getPoint());
+				repaint();
+			}
+		});
+
+		addMouseMotionListener(new MouseMotionAdapter() {
+			public void mouseDragged(MouseEvent event) {
+				point.add(event.getPoint());
+				repaint();
+			}
+			
+		});
+	}
+
+	public void paintComponent(Graphics g) {
+		super.paintComponent(g);
+		Graphics2D g2 = (Graphics2D) g;
+		g2.setColor(new Color(0, 0, 128));
+		g2.setStroke(new BasicStroke(15f,
+				BasicStroke.CAP_ROUND,
+				BasicStroke.JOIN_ROUND));
+		for (int i = 1; i < point.size(); i++)
+			g2.draw(new Line2D.Float(point.get(i-1), point.get(i)));
+	}
+
+	public static void main(String[] args) {
+		JFrame f = new JFrame();
+		f.add(new LineDraw_Quiz());
+		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		f.setSize(800, 600);
+		f.setVisible(true);
+	}
+}

src/main/java/kr/co/swh/lecture/opensource/ocr/LineDraw_Solution.java

@@ -0,0 +1,84 @@
+package kr.co.swh.lecture.opensource.ocr;
+
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseMotionAdapter;
+import java.awt.geom.Line2D;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+import com.google.gson.Gson;
+
+public class LineDraw_Solution extends JPanel {
+	private List<List<Point>> point = new ArrayList<List<Point>>();
+
+//	private static Circle circle;
+//	public static Circle getSingleton() {
+//		if(circle == null) circle = new Circle();
+//		return circle;
+//	}
+	
+	public LineDraw_Solution() {
+//		Circle c = Circle.get();
+		
+		
+		addMouseListener(new MouseAdapter() {
+			public void mousePressed(MouseEvent event) {
+				List<Point> list = new ArrayList<Point>();
+				point.add(list);
+			}
+			
+			@Override
+			public void mouseClicked(MouseEvent e) {
+				// TODO Auto-generated method stub
+
+			}
+			
+		});
+
+		addMouseMotionListener(new MouseMotionAdapter() {
+			public void mouseDragged(MouseEvent event) {
+				Point p = event.getPoint();
+				Gson gg = new Gson();
+				System.out.println(gg.toJson(point));
+				point.get(point.size()-1).add(event.getPoint());
+				repaint();
+			}
+			
+		});
+		
+	}
+
+	public void paintComponent(Graphics g) {
+		super.paintComponent(g);
+		Graphics2D g2 = (Graphics2D) g;
+		g2.setColor(new Color(0, 0, 128));
+		g2.setStroke(new BasicStroke(15f,
+				BasicStroke.CAP_ROUND,
+				BasicStroke.JOIN_ROUND));
+		for (int i = 0; i < point.size(); i++) {
+			List<Point> l = point.get(i);
+			for (int j = 1; j < l.size(); j++) {
+				g2.draw(new Line2D.Float(l.get(j-1), l.get(j)));
+			}
+		}
+	}
+
+	public static void main(String[] args) {
+//		Thread.currentThread().getContextClassLoader().getResourceAsStream("db.pro")
+		JFrame f = new JFrame();
+		f.add(new LineDraw_Solution());
+		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		f.setSize(800, 600);
+		f.setVisible(true);
+	}
+}