java圖像分割方法集合

1、class ImageTest extends JFrame public ImageTest() setSize(300,300); setVisible(true); public Image splitImage(String file, int rows, int cols) Image t=new ImageIcon(file).getImage(); Image result = new Imagerows * cols; int w = t.getWidth(this)/cols; int h = t.getHeight(this)/rows; try for(int i = 0

2、;i<result.length;i+) resulti = this.createImage(w,h); Graphics g = resulti.getGraphics(); g.translate(-i%cols)*w,(-i/cols)*h); g.drawImage(t,0,0,this); catch(Exception e) return result; class Test extends JFrame public Test() setSize(300,300); setVisible(true); public void paint(Graphics g) Image

3、Test tt = new ImageTest(); Image image = tt.splitImage("1.gif",5,5); g.drawImage(image0,0,0,this); public static void main(String args) new Test(); 將一個大圖像分割成幾個小圖像的代碼/分割圖像的方法。 public class ChenWin504 extends JApplet Image im; MediaTracker me; Image imag; public static Hashtable cache; publi

4、c void init() imag=new Image10; im=getToolkit().getImage("images/ima/jumptojavastrip.png"); me=new MediaTracker(this); me.addImage(im,0); try me.waitForID(0); catch(Exception e) DemoImages(); for(int i=0;i<10;i+) imagi=(Image)cache.get("jumptojavastrip-"+i+".png"); p

5、ublic void paint(Graphics g) int x=5; int y=100; g.drawImage(im,5,0,null); for(int i=0;i<10;i+) g.drawImage(imagi,x,y,null); x+=100; if(x>300) x=5;y+=100; public void DemoImages() File dir = new File(url.getFile(); if (dir != null && dir.isDirectory() String list = dir.list(); cache =

6、new Hashtable(list.length); for (int i = 0; i < list.length; i+) cache.put(listi, createImage(listi, this); if (cache.containsKey("jumptojavastrip.png") Image img = (Image) cache.get("jumptojavastrip.png"); for (int i=0, x=0; i < 10; i+, x+=80) String s = "jumptojavast

7、rip-" + String.valueOf(i) + ".png" cache.put(s, getCroppedImage(img, x, 0, 80, 80, this); public static Image createImage(String fileName, Component cmp) Image img = cmp.getToolkit().createImage(url); trackImage(img, cmp); return img; /分割圖像的方法。 public static Image getCroppedImage(Imag

8、e img, int x, int y, int w, int h, Component cmp) ImageProducer imgP = img.getSource(); CropImageFilter cif = new CropImageFilter(x, y, w, h); ImageProducer ip = new FilteredImageSource(imgP, cif); Image croppedimage = cmp.getToolkit().createImage(ip); trackImage(croppedimage, cmp); return croppedim

9、age; private static void trackImage(Image img, Component cmp) MediaTracker tracker = new MediaTracker(cmp); tracker.addImage(img, 0); try tracker.waitForID(0); catch (Exception ex) ex.printStackTrace(); 效果圖：java 圖片切割,縮放,轉(zhuǎn)換類型等等 public class ImageCut /* * 縮放圖像 * param srcImageFile源圖像文件地址 * param resul

10、t縮放后的圖像地址 * param scale縮放比例 * param flag縮放選擇:true 放大; false 縮小; */ public static void scale(String srcImageFile, String result, int scale, boolean flag) try BufferedImage src = ImageIO.read(new File(srcImageFile); / 讀入文件 int width = src.getWidth(); / 得到源圖寬 int height = src.getHeight(); / 得到源圖長 if (f

11、lag) / 放大 width = width * scale; height = height * scale; else / 縮小 width = width / scale; height = height / scale; Image image = src.getScaledInstance(width, height, Image.SCALE_DEFAULT); BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(

12、); g.drawImage(image, 0, 0, null); / 繪制縮小后的圖 g.dispose(); ImageIO.write(tag, "JPEG", new File(result);/ 輸出到文件流 catch (IOException e) e.printStackTrace(); /* * 圖像切割 * param srcImageFile源圖像地址 * param descDir切片目標文件夾 * param destWidth目標切片寬度 * param destHeight目標切片高度 */ public static void cut(St

13、ring srcImageFile, String descDir, int destWidth, int destHeight) try Image img; ImageFilter cropFilter;/ 讀取源圖像 BufferedImage bi = ImageIO.read(new File(srcImageFile); int srcWidth = bi.getHeight(); / 源圖寬度 int srcHeight = bi.getWidth(); / 源圖高度 if (srcWidth > destWidth && srcHeight > de

14、stHeight) Image image = bi.getScaledInstance(srcWidth, srcHeight, Image.SCALE_DEFAULT); destWidth = 200; / 切片寬度 destHeight = 150; / 切片高度 int cols = 0; / 切片橫向數(shù)量 int rows = 0; / 切片縱向數(shù)量 / 計算切片的橫向和縱向數(shù)量 if (srcWidth % destWidth = 0) cols = srcWidth / destWidth; else cols = (int) Math.floor(srcWidth / des

15、tWidth) + 1; if (srcHeight % destHeight = 0) rows = srcHeight / destHeight; else rows = (int) Math.floor(srcHeight / destHeight) + 1; / 循環(huán)建立切片 / 改進的想法:是否可用多線程加快切割速度 for (int i = 0; i < rows; i+) for (int j = 0; j < cols; j+) / 四個參數(shù)分別為圖像起點坐標和寬高 / 即: CropImageFilter(int x,int y,int width,int hei

16、ght) cropFilter = new CropImageFilter(j * 200, i * 150, destWidth, destHeight); img = Toolkit.getDefaultToolkit().createImage( new FilteredImageSource(image.getSource(), cropFilter); BufferedImage tag = new BufferedImage(destWidth, destHeight, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphic

17、s(); g.drawImage(img, 0, 0, null); / 繪制縮小后的圖 g.dispose(); / 輸出為文件 ImageIO.write(tag, "JPEG", new File(descDir + "pre_map_" + i + "_" + j + ".jpg"); catch (Exception e) e.printStackTrace(); / 圖像類型轉(zhuǎn)換GIF->JPG GIF->PNG PNG->JPG PNG->GIF(X) public stati

18、c void convert(String source, String result) try File f = new File(source); f.canRead(); f.canWrite(); BufferedImage src = ImageIO.read(f); ImageIO.write(src, "JPG", new File(result); catch (Exception e) / TODO Auto-generated catch block e.printStackTrace(); / 彩色轉(zhuǎn)為黑白 public static void gra

19、y(String source, String result) try BufferedImage src = ImageIO.read(new File(source); ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY); ColorConvertOp op = new ColorConvertOp(cs, null); src = op.filter(src, null); ImageIO.write(src, "JPEG", new File(result); catch (IOException e

20、) e.printStackTrace(); public static void main(String args) /cut("e:/1.jpg", "e:/t/", 200, 150); 求助大圖像分割并輸出分割后的小圖，程序有問題，求教程序要求就是，把一幅1620x1620的大圖片分割成20x20個 81x81的小圖片，并把小圖片以PNG格式輸出，源碼如下，需輸入三個參數(shù)：Inputimagefile XCell YCell 2.jpg 20 20源碼不完全，現(xiàn)在暫時先計劃分割大圖第一個橫軸的長條，因為運行到ImageIO.write(CellI

21、mage, "png", new File("2"+spliter+i+spliter+"0"+outFileName);這行時就有問題。請求教哪里出了問題，急/package imageslicer;public class test private static BufferedImage CellImage; public static void main(String args) throws Exception / make sure we have exactly two arguments, / a waiting pe

22、riod and a file name if (args.length != 3) "Inputimagefile XCell YCell"); System.exit(1); String inputFileName = args0; Toolkit toolkit = Toolkit.getDefaultToolkit(); Image image = toolkit.getImage(inputFileName); MediaTracker tracker = new MediaTracker(new Container(); tracker.addImage(im

23、age, 1); try tracker.waitForID(1); catch(InterruptedException e) String outFileName = ".png" String spliter ="-" int XCell = Integer.parseInt(args1); int YCell = Integer.parseInt(args2); /ImageProducer producer = image.getSource(); /BufferedImage CellImage = new BufferedImage(81,

24、81, BufferedImage.TYPE_INT_RGB); Image Cell = new Image XCell ; for (int i = 0; i <= XCell-1; i+) ImageFilter filter = new CropImageFilter(0+i * 81, 0, 81, 81); ImageProducer producer=new FilteredImageSource(image.getSource(),filter); /Celli = createImage(new FilteredImageSource(producer, filter)

25、; Celli = createImage(FilteredImageSource) producer); CellImage = (BufferedImage) Celli; tracker.addImage(Celli, 2); /CellImage = ImageIO.read(ImageInputStream) Celli); BufferedImage CellImage = new BufferedImage(81,81, BufferedImage.TYPE_INT_RGB); CellImage = (BufferedImage) Celli; ImageIO.write(Ce

26、llImage, "png", new File("2"+spliter+i+spliter+"0"+outFileName); try tracker.waitForID(2); catch(InterruptedException e) /BufferedImage image = robot.createScreenCapture(screenRect); public void paint(Graphics g) Graphics2D g2 = (Graphics2D) g; private static Image crea

27、teImage(FilteredImageSource source) / TODO Auto-generated method stub return null; 問題解決了，原因如下切割圖片并輸出時，不能用下面的方法,下面的方法是適合在屏幕上顯示或者copy到內(nèi)存里供其它使用 ImageFilter filter = new CropImageFilter(0+i * 81, 0, 81, 81); ImageProducer producer=new FilteredImageSource(image.getSource(),filter); /Celli = createImage(n

28、ew FilteredImageSource(producer, filter); Celli = createImage(FilteredImageSource) producer);而要用getSubimage 方法，這才是適合成圖輸出的方法BufferedImage CellImage = new BufferedImage(newFile(.);CellImage.getSubimage(0+i * 81, 0, 81, 81);用Java簡單實現(xiàn)文件分割與合并,主要應用IO的RandomAccessFile(聽說斷點續(xù)傳是用它實現(xiàn))class Fen String fileName;

29、 int size; Fen(String fileName,String size) this.fileName = fileName; this.size = Integer.parseInt(size)*1024; public void cut()throws Exception int maxx = 0; File inFile = new File(fileName); int fileLength = (int)inFile.length(); /取得文件的大小int value; /取得要分割的個數(shù) RandomAccessFile inn = new RandomAccess

30、File(inFile,"r");/打開要分割的文件 value = fileLength/size; int i=0; int j=0; /根據(jù)要分割的數(shù)目輸出文件 for (;j File outFile = new File(inFile.getName()+j+"zzii"); RandomAccessFile outt= new RandomAccessFile(outFile,"rw"); maxx+=size; for (;i outt.write(inn.read(); outt.close(); File outFile = new File(inFile.getName()+j+"zzii");RandomAccessFile outt= new RandomAccessFile(outFile,"rw"); for(;i >)outt.write(inn.read(); outt.close();inn