Image-Process.rar_Java process-Thread_image process java_java im

import java.awt.*; import java.applet.*; import java.awt.image.*; import java.awt.event.*; /** * This class reads PARAM tags from its HTML host page and sets * the color and label properties of the applet. Program execution * begins with the init() method. */ public class ImageGray extends Applet implements MouseListener { //Java窗口的尺寸 int windowWidth,windowHeight; //imageTest:原始图片;被重新亮度化的图片 Image imageTest,imageCurrent; //双缓冲 Image offScreenImage; Graphics offScreen; //图像的尺寸 int imageWidth,imageHeight; //图像是否被恢复 boolean bRestore = true; //用于存储像素数据的数组 int pixelsSource[]; int pixelsDestnation[]; //内存图像管理 MemoryImageSource memoryImage; FrameManager frameManager; GrayDialog gd; //亮度修正比 float fBrightness = 1.0f; int lower_valve = 0; int upper_valve = 255; float param_a = 1.0f; int whichMethod = 0; public void init() { initForm(); usePageParams(); initParameters(); } private final String labelParam = "label"; private final String backgroundParam = "background"; private final String foregroundParam = "foreground"; /** * Reads params from the applet's HTML host and sets applet * properties. */ private void usePageParams() { final String defaultLabel = "Default label"; final String defaultBackground = "C0C0C0"; final String defaultForeground = "000000"; String labelValue; String backgroundValue; String foregroundValue; labelValue = getParameter(labelParam); backgroundValue = getParameter(backgroundParam); foregroundValue = getParameter(foregroundParam); if ((labelValue == null) || (backgroundValue == null) || (foregroundValue == null)) { /** * There was something wrong with the HTML host tags. * Generate default values. */ labelValue = defaultLabel; backgroundValue = defaultBackground; foregroundValue = defaultForeground; } /** * Set the applet's string label, background color, and * foreground colors. */ label1.setText(labelValue); label1.setBackground(stringToColor(backgroundValue)); label1.setForeground(stringToColor(foregroundValue)); this.setBackground(stringToColor(backgroundValue)); this.setForeground(stringToColor(foregroundValue)); } /** * Converts a string formatted as "rrggbb" to an awt.Color object */ private Color stringToColor(String paramValue) { int red; int green; int blue; red = (Integer.decode("0x" + paramValue.substring(0,2))).intValue(); green = (Integer.decode("0x" + paramValue.substring(2,4))).intValue(); blue = (Integer.decode("0x" + paramValue.substring(4,6))).intValue(); return new Color(red,green,blue); } /** * External interface used by design tools to show properties of an applet. */ public String[][] getParameterInfo() { String[][] info = { { labelParam, "String", "Label string to be displayed" }, { backgroundParam, "String", "Background color, format \"rrggbb\"" }, { foregroundParam, "String", "Foreground color, format \"rrggbb\"" }, }; return info; } Label label1 = new Label(); /** * Intializes values for the applet and its components */ void initForm() { this.setBackground(Color.lightGray); this.setForeground(Color.black); label1.setText("label1"); this.setLayout(new BorderLayout()); this.add("North",label1); } public void initParameters() { windowWidth = Integer.parseInt(getParameter("width")); windowHeight = Integer.parseInt(getParameter("height")); //装载图像并获取图像参数 imageTest = loadingImage( "seashore.bmp", "Loading image one..." ); offScreenImage = createImage( windowWidth, windowHeight ); offScreen = offScreenImage.getGraphics(); imageWidth = imageTest.getWidth(this); imageHeight = imageTest.getHeight(this); //创建存储像素数据的数组 pixelsSource = new int[imageWidth * imageHeight]; pixelsDestnation = new int[imageWidth * imageHeight]; //创建像素抓取器 PixelGrabber pixelGrabber = new PixelGrabber(imageTest,0,0,imageWidth,imageHeight,pixelsSource,0,imageWidth); try { pixelGrabber.grabPixels (); } catch(InterruptedException e) {} //创建内存图像管理器 memoryImage = new MemoryImageSource(imageWidth,imageHeight,ColorModel.getRGBdefault(),pixelsDestnation,0,imageWidth); //创建当前图像,它是经像素修复的图像 imageCurrent = createImage(memoryImage); this.addMouseListener(this); //frameManager只作为服务者出现,而不必给它显示的机会,要显示的将是对话框 frameManager = new FrameManager("Data Frame"); gd = new GrayDialog(frameManager,"Gray: ",true); //第一次绘制 draw_groupBox_border(offScreen); } public Image loadingImage(String imageFile,String status) { Image image; MediaTracker mediaTracker = new MediaTracker(this); showStatus(status); image = getImage(getCodeBase(),imageFile); mediaTracker .addImage(image,0); try { mediaTracker .waitForID(0); } catch(InterruptedException e){} showStatus(""); return (image); } public void paint(Graphics g) { if(bRestore) { offScreen.drawImage(this.imageTest, 15, 32, this ); g.drawImage( offScreenImage, 0, 0, this ); } //鼠标事件已经发生 else { //if(gd.isDataChanged) { GrayRetriever gr = null; switch(whichMethod) { //灰度比例化 case 0: if(gd.isDataChanged) { BrightnessRetriever br = new BrightnessRetriever (this.param_a,lower_valve,upper_valve); br.retrieveRGB(pixelsSource,80,50,200,150,imageWidth,pixelsDestnation); //br.retrieveRGB(pixelsSource,imageWidth,pixelsDestnation); } break; //灰度取反 case 1: gr = new GrayRetriever( ); gr.setImageProperty(false); gr.setType(GrayRetriever.PIXEL_GRAY_REVERSE ); gr.retrieveRGB(pixelsSource,80,50,200,150,imageWidth,pixelsDestnation); break; //灰度直方图均衡化 case 2: HistogramRetriever hr = new HistogramRetriever (); hr.isGrayImage = true; hr.retrieveRGB(pixelsSource,80,50,200,150,imageWidth,pixelsDestnation); break; default: break; } offScreen.drawImage(imageCurrent,15,32,this); } g.drawImage( offScreenImage, 0, 0, this ); } } public void draw_groupBox_border(Graphics g) { BorderRectangle br = new BorderRectangle(13,30,imageWidth + 2,imageHeight + 2); br.setBkColor(Color.black); br.draw(g); } public void update(Graphics g) { paint(g); } public void mouseClicked(MouseEvent evt) { if(evt.getModifiers() == MouseEvent.BUTTON1_MASK) { //恢复原始图像 bRestore = true; repaint(15,32,imageWidth - 1,imageHeight - 2); } else if(evt.getModifiers() == MouseEvent.BUTTON3_MASK) { bRestore = false; String str_a,str_b,str_c,str_d; str_a = String.valueOf(param_a); gd.tx_1.setText(str_a); gd.which = whichMethod; //上一次选中的单选按钮 gd.radioManager.setSelectedCheckbox(gd.radios[whichMethod]); //显示对话框 gd.show(); if(gd.isDataChanged) { //获取对话框的文本值 str_a = gd.str_1; //转化为数据 Float float_a = new Float(str_a); param_a = float_a.floatValue(); whichMethod = gd.which; imageCurrent = createImage(memoryImage); repaint(15,32,imageWidth - 1,imageHeight - 2); } } } public void mouseEntered(MouseEvent evt){} public void mouseExited(MouseEvent evt){} public void mousePressed(MouseEvent evt){} public void mouseReleased(MouseEvent evt){} }