Java图像处理

基本图形

package com.wc;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Random;

import javax.imageio.ImageIO;


public class DemoTest {

  public static void main(String[] args) throws IOException {
		BufferedImage img = new BufferedImage(600, 420, BufferedImage.TYPE_INT_ARGB);

		 Graphics g1 = img.getGraphics();
		 g1.setColor(Color.ORANGE);
		 g1.drawOval(50, 50, 100, 100);
		 g1.dispose();
		 ImageIO.write(img,"png",new File("c:/g1.png"));

		Graphics2D g2 = img.createGraphics();
		g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
		g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
		
		
		g2.setColor(Color.RED);
		// g2.setStroke(new BasicStroke(5));
		// g2.drawOval(100, 100, 50, 50); //空心圆

		// 画点
		// g2.drawLine(150, 150, 150,150);
		Random rand = new Random();
		for (int i = 0; i