Java processing Pictures--zooming, rotating and mosaics of images

This is my own combination of some information on the Web package Java image processing class, support image scaling, rotation, mosaic. (Reproduced Please specify Source: http://blog.csdn.net/u012116457)
Not much to say, on the code:

 PackageDealImportJava.awt.Color;ImportJava.awt.Graphics;ImportJava.awt.Graphics2D;ImportJava.awt.Image;ImportJava.awt.geom.AffineTransform;ImportJava.awt.image.AffineTransformOp;ImportJava.awt.image.BufferedImage;ImportJava.io.File;ImportJavax.imageio.ImageIO;/** * Image processing class. * * @author NAGSH * * * * Public  class imagedeal {String OpenUrl;//Original picture open pathString Saveurl;//New diagram save pathString Savename;//New map nameString suffix;//New diagram type only supports Gif,jpg,png     Public Imagedeal(String openUrl, String Saveurl, String savename, string suffix) { This. openUrl = OPENURL; This. savename = Savename; This. Saveurl = Saveurl; This. suffix = suffix; }/** * Image zoom. * * @param Width * required height * @param Heights * required * @throw S Exception * /     Public void Zoom(intWidthintHeightthrowsException {DoubleSX =0.0;DoubleSY =0.0; File File =NewFile (OPENURL);if(!file.isfile ()) {Throw NewException ("Imagedeal>>>"+ file +"Not a picture File!"); } bufferedimage bi = imageio.read (file);//Read the picture        //Calculates the x-axis y-axis scaling-scale, if necessary, to ensure that the parameter width and height are proportional to the change before callingSX = (Double) Width/bi.getwidth (); SY = (Double) Height/bi.getheight (); Affinetransformop op =NewAFFINETRANSFORMOP (affinetransform.getscaleinstance (SX, SY),NULL); File SF =NewFile (Saveurl, Savename +"."+ suffix); Image zoomimage = Op.filter (BI,NULL);Try{imageio.write (bufferedimage) zoomimage, suffix, sf);//Save picture}Catch(Exception e)        {E.printstacktrace (); }    }/** * Rotation * * @param degree * Rotation angle * @throws Exception * *     Public void Spin(intdegree)throwsException {intSwidth =0;//Width after rotation        intSheight =0;//Height after rotation        intX//Origin Point horizontal        intY//Origin ordinateFile File =NewFile (OPENURL);if(!file.isfile ()) {Throw NewException ("Imagedeal>>>"+ file +"Not a picture File!"); } bufferedimage bi = imageio.read (file);//Read the picture        //processing angle--determines the rotational radiandegree = degree% the;if(Degree <0) degree = the+ degree;//convert angle to 0-360 degrees        Doubletheta = Math.toradians (degree);//Convert angle to radians        //Determine the width and height after rotation        if(Degree = = the|| degree = =0|| degree = = the) {swidth = Bi.getwidth ();        Sheight = Bi.getheight (); }Else if(Degree = = -|| degree = = the) {sheight = Bi.getwidth ();        Swidth = Bi.getheight (); }Else{Swidth = (int) (Math.sqrt (Bi.getwidth () * bi.getwidth () + bi.getheight () * Bi.getheight ())); Sheight = (int) (Math.sqrt (Bi.getwidth () * bi.getwidth () + bi.getheight () * Bi.getheight ())); } x = (Swidth/2)-(Bi.getwidth ()/2);//Determine origin coordinatesy = (Sheight/2)-(Bi.getheight ()/2); BufferedImage Spinimage =NewBufferedImage (Swidth, Sheight, Bi.gettype ());//Set picture background colorgraphics2d GS = (graphics2d) spinimage.getgraphics ();        Gs.setcolor (Color.White); Gs.fillrect (0,0, Swidth, sheight);//Draw the background of the rotated picture in a given colorAffineTransform at =NewAffineTransform (); At.rotate (theta, Swidth/2, Sheight/2);//Rotate imagesAt.translate (x, y); Affinetransformop op =NewAffinetransformop (at, affinetransformop.type_bicubic);        Spinimage = Op.filter (bi, spinimage); File SF =NewFile (Saveurl, Savename +"."+ suffix); Imageio.write (spinimage, suffix, sf);//Save picture}/** * Mosaic. * @param size mosaic size, that is, the length of each rectangle * @return * @throws Exception */     Public Boolean Mosaic(intSizethrowsException {File File =NewFile (OPENURL);if(!file.isfile ()) {Throw NewException ("Imagedeal>>>"+ file +"Not a picture File!"); } bufferedimage bi = imageio.read (file);//Read the pictureBufferedImage Spinimage =NewBufferedImage (Bi.getwidth (), Bi.getheight (), Bi. TYPE_INT_RGB);if(Bi.getwidth () < size | | bi.getheight () < size | | size <=0) {//Mosaic grid size is too large or too small            return false; }intXcount =0;//Direction Draw number        intYcount =0;//Y-direction Draw number        if(Bi.getwidth ()% size = =0) {Xcount = Bi.getwidth ()/size; }Else{xcount = Bi.getwidth ()/size +1; }if(Bi.getheight ()% size = =0) {Ycount = Bi.getheight ()/size; }Else{ycount = Bi.getheight ()/size +1; }intx =0;//coordinates        inty =0;//Draw mosaics (draw rectangles and fill colors)Graphics GS = Spinimage.getgraphics (); for(inti =0; i < Xcount; i++) { for(intj =0; J < Ycount; J + +) {//Mosaic rectangular lattice size                 intMwidth = size;intMheight = size;if(i==xcount-1){//Landscape The last one is more special, probably not enough a sizeMwidth = Bi.getwidth ()-X; }if(j = = ycount-1){//similarlyMheight =bi.getheight ()-y; }//Rectangle color takes center pixel RGB value                intCenterX = x;intCenterY = y;if(Mwidth%2==0) {CenterX + = mwidth/2; }Else{CenterX + = (Mwidth-1) /2; }if(Mheight%2==0) {CenterY + = mheight/2; }Else{CenterY + = (Mheight-1) /2; } Color color =NewColor (Bi.getrgb (CenterX, centery));                Gs.setcolor (color);                Gs.fillrect (x, Y, Mwidth, mheight); y = y + size;//calculates the y-coordinate of the next rectangle} y =0;//restore y-coordinatex = x + size;//Calculate x-coordinate} gs.dispose (); File SF =NewFile (Saveurl, Savename +"."+ suffix); Imageio.write (spinimage, suffix, sf);//Save picture        return true; } Public Static void Main(string[] args)throwsException {Imagedeal Imagedeal =NewImagedeal ("E://1.jpg","e://","2","JPG");//Test scaling        /* Imagedeal.zoom ($); */        //test rotation        /* Imagedeal.spin (*);        //test mosaic        /*imagedeal.mosaic (4); * *}}

Java processing Pictures--zooming, rotating and mosaics of images