자바 이미지 리사이즈

 

자바 이미지 사이즈 변경하는 소스 

 

( 출처: http://invincure.tistory.com/entry/JAVA-이미지-사이즈-바꾸기-이미지-리사이즈 [Do you want it? Come get it.])

 

메인함수로 작동되는 깔끔한 버전이네요..

 

 

import java.awt.Graphics;

import java.awt.Image;

import java.awt.MediaTracker;

import java.awt.Toolkit;

import java.awt.image.BufferedImage;

import java.io.BufferedOutputStream;

import java.io.ByteArrayOutputStream;

import java.io.DataOutputStream;

import java.io.FileInputStream;

import java.io.FileOutputStream;

 

import javax.imageio.ImageIO;

 

public class ImageResizing {

       public static Image resizing(Image soruce, int width, int height)

                    throws Exception {

             int newW = width;

             int newH = height;

 

             return soruce.getScaledInstance(newW, newH, Image.SCALE_SMOOTH);

       }

 

       public static void main(String[] args) {

             String imgResdFile = "c:\\a.jpg";

             String imgWriteFile = "c:\\a1.jpg";

 

             try {

                    // img = ImageIO.read( new File(fName));

                    FileInputStream fis = new FileInputStream(imgResdFile);

                    byte[] data = new byte[fis.available()];

                    System.out.println(fis.available());

                    fis.read(data);

                    fis.close();

 

                    Image image = Toolkit.getDefaultToolkit().createImage(data);

                    Image rtnImage = resizing(image, 640, 480);

 

                    MediaTracker tracker = new MediaTracker(new java.awt.Frame());

                    tracker.addImage(rtnImage, 0);

                    tracker.waitForAll();

 

                    BufferedImage bi = new BufferedImage(rtnImage.getWidth(null),

                                 rtnImage.getHeight(null), BufferedImage.TYPE_INT_RGB);

                    Graphics g = bi.getGraphics();

                    g.drawImage(rtnImage, 0, 0, null);

                    g.dispose();

                    ByteArrayOutputStream bas = new ByteArrayOutputStream();

                    ImageIO.write(bi, "jpeg", bas);

                    byte[] writeData = bas.toByteArray();

 

                    DataOutputStream dos = new DataOutputStream(

                                 new BufferedOutputStream(new FileOutputStream(imgWriteFile)));

                    dos.write(writeData);

                    dos.close();

 

             } catch (Exception e) {

                    e.printStackTrace();

             }

       }

}

 

 

위의 소스를 메소드화 해서 사용하신다면 main 메소드를  ImgChange (String orgFile , String chgFile) 형태로

 

바꿔서 사용하시면 됩니다. 이미지 리사이즈는 해보니 시간이 건당 10초 내외의 시간이 걸리는 듯 합니다. 흠..

 

 

       public static Image resizing(Image soruce, int width, int height)

                    throws Exception {

             int newW = width;

             int newH = height;

 

             return soruce.getScaledInstance(newW, newH, Image.SCALE_SMOOTH);

       }

 

       public void ImgChange (String orgFile , String chgFile) {

             String imgResdFile = orgFile  ; // "c:\\a.jpg"; 경로가포함된 대상이름

             String imgWriteFile = chgFile ; // "c:\\a1.jpg"; 경로가포함된 결과이름

 

             try {

                    // img = ImageIO.read( new File(fName));

                    FileInputStream fis = new FileInputStream(imgResdFile);

                    byte[] data = new byte[fis.available()];

                    System.out.println(fis.available());

                    fis.read(data);

                    fis.close();

 

                    Image image = Toolkit.getDefaultToolkit().createImage(data);

                    Image rtnImage = resizing(image, 640, 480);

 

                    MediaTracker tracker = new MediaTracker(new java.awt.Frame());

                    tracker.addImage(rtnImage, 0);

                    tracker.waitForAll();

 

                    BufferedImage bi = new BufferedImage(rtnImage.getWidth(null),

                                 rtnImage.getHeight(null), BufferedImage.TYPE_INT_RGB);

                    Graphics g = bi.getGraphics();

                    g.drawImage(rtnImage, 0, 0, null);

                    g.dispose();

                    ByteArrayOutputStream bas = new ByteArrayOutputStream();

                    ImageIO.write(bi, "jpeg", bas);

                    byte[] writeData = bas.toByteArray();

 

                    DataOutputStream dos = new DataOutputStream(

                                 new BufferedOutputStream(new FileOutputStream(imgWriteFile)));

                    dos.write(writeData);

                    dos.close();

 

             } catch (Exception e) {

                    e.printStackTrace();

             }

       }