Proportional scaling of pictures

import java.awt.color;import java.awt.graphics;import java.awt.image;import  Java.awt.image.bufferedimage;import java.awt.image.convolveop;import java.awt.image.kernel;import  java.io.File;import java.io.FileOutputStream;import java.io.IOException;import  javax.swing.imageicon;import com.sun.image.codec.jpeg.jpegcodec;import  com.sun.image.codec.jpeg.jpegencodeparam;import com.sun.image.codec.jpeg.jpegimageencoder;/** *   Image scaling Tools  *  @Author  vitoHuang *  @Time  2015 August 12  *  @Mark  */ public class imageutil {/** *  *  @param  originalfile Photo file  *  @param  resizedfile after zooming file  *  @throws  IOException */public static void  Resize (file originalfile, file resizedfile) throws ioexception {resize (OriginalFile, resizedfile,640);} /** *  *  @param  originalfile Original picture file *  @param  resizedfile After zooming file  *  @param  newwidth width   units:px *  @throws  ioexception */public static void resize (file originalfile, file  Resizedfile,int newwidth) Throws ioexception {resize (originalfile, resizedfile,  NEWWIDTH,1F);} /** *  *  @param  originalFile  Original picture file  *  @param  resizedfile zoom file  *  @param  newwidth Zoom after width   Unit:px *  @param  quality quality  0-1  * @ Throws ioexception */public static void resize (file originalfile, file  resizedfile,int newwidth, float quality)  throws IOException {if  ( quality > 1)   throw new illegalargumentexception ("Quality must be between 0 and 1");   Imageicon ii = new imageicon (Originalfile.getcanonicalpath ());  Image i =  ii.getimage ();           image resizedimage = null;                   int  Iwidth = i.getwidth (NULL);          int  Iheight = i.getheight (NULL);                   //according to the new picture width provided         if  ( Iwidth > iheight)  {               resizedimage = i.getscaledinstance (newwidth,  (newwidth * iheight)  /  iwidth, image.scale_smooth);           }else{               resizedImage =  I.getscaledinstance ((NEWWIDTH *&NBsp;iwidth)  / iheight,newwidth, image.scale_smooth);           }                   //ensure that all pixels in the image are loaded         Image temp =  New imageicon (resizedimage). GetImage ();                 //Create a picture cache         BufferedImage  Bufferedimage = new bufferedimage (Temp.getwidth (null), temp.getheight (null),  BUFFEREDIMAGE.TYPE_INT_RGB);                  //copy image buffer images         Graphics g =  Bufferedimage.creategraphics ();                  g.setcolor (CoLor.white);           g.fillrect (0, 0,  Temp.getwidth (NULL),  temp.getheight (null));           G.drawimage (temp, 0, 0, null);           G.dispose ();                   float softenFactor = 0.05f;           float[] softenarray = { 0, softenfactor, 0, softenfactor,1 -   (softenfactor * 4), softenfactor, 0, softenfactor, 0 };           kernel kernel = new kernel (3, 3,  softenarray);           convolveop cop =  new convolveop (Kernel, convolveop. Edge_no_op, null);          bufferedimage =  Cop.filter (bufferedimage, null);                   fileoutputstream out = new fileoutputstream ( Resizedfile);            //  encoded image as JPEG data stream          JPEGImageEncoder encoder =  Jpegcodec.createjpegencoder (out);             Jpegencodeparam param = encoder.getdefaultjpegencodeparam (BufferedImage);             param.setquality (quality, true);             encoder.setjpegencodeparam (param);           encoder.encOde (bufferedimage);   }} 

Proportional scaling of pictures