本文整理了Java中ij.gui.Overlay类的一些代码示例，展示了Overlay类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Overlay类的具体详情如下：
包路径：ij.gui.Overlay
类名称：Overlay

Overlay介绍

[英]An Overlay is a list of ROIs that can be drawn non-destructively on an Image.
[中]覆盖是可以在图像上以非破坏性方式绘制的ROI列表。

代码示例

代码示例来源：origin: stackoverflow.com

import java.io.File;
import java.util.HashMap;
import org.apache.pdfbox.multipdf.Overlay;
import org.apache.pdfbox.pdmodel.PDDocument;

public class TestPDF {

  public static void main(String[] args) throws Exception{        
    PDDocument realDoc = PDDocument.load(new File("originaldocument.pdf"));
    //the above is the document you want to watermark
    //for all the pages, you can add overlay guide, indicating watermark the original pages with the watermark document.

    HashMap<Integer, String> overlayGuide = new HashMap<Integer, String>();
    for(int i=0; i<realDoc.getNumberOfPages(); i++){
      overlayGuide.put(i+1, "watermark.pdf");
      //watermark.pdf is the document which is a one page PDF with your watermark image in it. 
      //Notice here, you can skip pages from being watermarked.
    }
    Overlay overlay = new Overlay();
    overlay.setInputPDF(realDoc);
    overlay.setOutputFile("final.pdf");
    overlay.setOverlayPosition(Overlay.Position.BACKGROUND);
    overlay.overlay(overlayGuide);      
  }
}

代码示例来源：origin: stackoverflow.com

PDDocument watermarkDoc = PDDocument.load("watermark.pdf");
//Assuming your empty document with watermark image in it.

PDDocument realDoc = PDDocument.load("document-to-be-watermarked.pdf");
//Let's say this is your document that you want to watermark. For example sake, I am opening a new one, you would already have a reference to PDDocument if you are creating one

Overlay overlay = new Overlay();
overlay.overlay(realDoc,watermarkDoc);
watermarkDoc.save("document-now-watermarked.pdf");

代码示例来源：origin: net.imagej/ij

ImageStack stack2 = new ImageStack(newWidth, newHeight);
boolean virtualStack = stack1.isVirtual();
  method = ImageProcessor.NONE;
for (int i=1; i<=nSlices; i++) {
  IJ.showStatus("Scale: " + i + "/" + nSlices);
  ip1 = stack1.getProcessor(i);
    ip1.setRoi(r);
    ip1 = ip1.crop();
  IJ.showProgress(i, nSlices);
  overlay = null;
if (overlay!=null) {
  overlay = overlay.duplicate();
  Overlay overlay2 = new Overlay();
  for (int i=0; i<overlay.size(); i++) {
    Roi roi = overlay.get(i);
    Rectangle bounds = roi.getBounds();
    if (roi instanceof ImageRoi && bounds.x==0 && bounds.y==0) {
      ImageRoi iroi = (ImageRoi)roi;
      overlay2.add(iroi);
  if (overlay2.size()>0)
IJ.showProgress(1.0);

代码示例来源：origin: net.imagej/ij

public void convertStackToImages(ImagePlus imp) {
  if (nSlices<2) {
    IJ.wait(500);
    imp = IJ.getImage();
    nSlices = imp.getStackSize();
    IJ.error("\"Convert Stack to Images\" requires a stack\n"+imp);
    return;
  if (!imp.lock())
    return;
  ImageStack stack = imp.getStack();
  int size = stack.getSize();
      Overlay overlay2 = new Overlay();
      for (int j=0; j<overlay.size(); j++) {
        Roi roi = overlay.get(j);
        if (roi.getPosition()==i) {
          roi.setPosition(0);
          overlay2.add((Roi)roi.clone());
      if (overlay2.size()>0)

代码示例来源：origin: net.imagej/ij

impB.deleteRoi(); //we have it in roiA
Color colorBack = Toolbar.getBackgroundColor();    
IJ.setBackgroundColor(0,0,0);
String title = impB.getTitle();
if(impB.getOverlay() != null)
  impB.getOverlay().clear();
int boundLeft = roiA.getBounds().x;
int boundTop = roiA.getBounds().y;
int boundWidth = roiA.getBounds().width;
int boundHeight = roiA.getBounds().height;
impB.setStack(stackNew);
ImageProcessor ip = impB.getProcessor();
ip.setInterpolationMethod(ImageProcessor.BILINEAR);
ip.setBackgroundValue(0);
for (int slc = 0; slc < stackNew.size(); slc++) {
  impB.setSlice(slc+1);
  ip.rotate(phi0); //Rotate
  ip.translate(dx4, dy4); //Translate
int y = (impB.getHeight() - (int) rrHeight) / 2;
impB.setStack(impB.getStack().crop(x, y, 0, (int) rrWidth, (int) rrHeight, impB.getStack().getSize()));//Crop
impB.setSlice(currentSlice);
impB.setTitle(title);

代码示例来源：origin: net.imagej/ij

private ImagePlus convert(ImagePlus[] images, int count) {		
  double min = Double.MAX_VALUE;
  double max = -Double.MAX_VALUE;
  ImageStack stack = new ImageStack(width, height);
  FileInfo fi = images[0].getOriginalFileInfo();
  if (fi!=null && fi.directory==null) fi = null;
  Overlay overlay = new Overlay();
  for (int i=0; i<count; i++) {
    ImageProcessor ip = images[i].getProcessor();
    boolean invertedLut = ip.isInvertedLut();
    if (ip.getMin()<min) min = ip.getMin();
    if (ip.getMax()>max) max = ip.getMax();
    String label = titlesAsLabels?images[i].getTitle():null;
    if (label!=null) {
      String info = (String)images[i].getProperty("Info");
      Overlay overlay2 = images[i].getOverlay();
      if (overlay2!=null) {
        for (int j=0; j<overlay2.size(); j++) {
          Roi roi = overlay2.get(j);
          roi.setPosition(i+1);
          overlay.add((Roi)roi.clone());
    imp.setFileInfo(fi);
  if (overlay.size()>0)
    imp.setOverlay(overlay);
  return imp;

代码示例来源：origin: net.imagej/ij

return;
int lineWidth = (int)(1.0/gel.getCanvas().getMagnification());
if (lineWidth<1)
  lineWidth = 1;
Font f = new Font("Helvetica", Font.PLAIN, 12*lineWidth);
ImageProcessor ip = gel.getProcessor();
ImageProcessor ipLanes = ip.duplicate();
if (!(ipLanes instanceof ByteProcessor))
  ipLanes = ipLanes.convertToByte(true);
ipLanes.setFont(f);
ipLanes.setLineWidth(lineWidth);
setCustomLut(ipLanes);
ImagePlus lanes = new ImagePlus("Lanes of "+gel.getShortTitle(), ipLanes);
lanes.changes = true;
lanes.setRoi(gel.getRoi());
gel.deleteRoi();
for (int i=0; i<overlay.size(); i++) {
  Roi roi = overlay.get(i);
  Rectangle r = roi.getBounds();
  ipLanes.drawRect(r.x, r.y, r.width, r.height);
  String s = ""+(i+1);

代码示例来源：origin: net.imagej/ij

public static void labelHyperstack(ImagePlus imp) {
  int width = imp.getWidth();
  int height = imp.getHeight();
  int c = imp.getNChannels();
  Overlay overlay = new Overlay();
  int n = stack.getSize();
    int yloc = 30;
    IJ.showProgress(i, n);
    ImageProcessor ip = stack.getProcessor(i);
    ip.setAntialiasedText(true);
    ip.setColor(Color.black);
    ip.setRoi(0, 0, width, yloc);
    String text = "c="+IJ.pad(channel,3)+", z="+IJ.pad(slice,3)+", t="+IJ.pad(frame,3)+", i="+IJ.pad(i,4);
    else
      roi.setPosition(i);
    overlay.add(roi);
      roi.setStrokeColor(Color.white);
      roi.setPosition(0, 1, 1);
      overlay.add(roi);

代码示例来源：origin: net.imagej/ij

/** Flattens Overlay 'overlay' on slice 'slice' corresponding to
 * coordinates 'z' and 't' in RGB-HyperStack 'stack'
 */
private void flattenImage(ImageStack stack, int slice, Overlay overlay, boolean showAll, int z, int t) {
  ImageProcessor ips = stack.getProcessor(slice);
  ImagePlus imp1 = new ImagePlus("temp", ips);
  int w = imp1.getWidth();
  int h = imp1.getHeight();
  for (int i=0; i<overlay.size(); i++) {
    Roi r = overlay.get(i);
    int cPos = r.getCPosition();// 0 or 1 (RGB-HyperStack)
    int zPos = r.getZPosition();
    int tPos = r.getTPosition();
    if (!((cPos==1 || cPos==0) && (zPos==z || zPos==0) && (tPos==t || tPos==0) || showAll))
      r.setLocation(w, h);
  }
  imp1.setOverlay(overlay);
  ImagePlus imp2 = imp1.flatten();
  stack.setPixels(imp2.getProcessor().getPixels(), slice);
}

代码示例来源：origin: net.imagej/ij

/** Flattens Overlay 'overlay' on slice 'slice' of ImageStack 'stack'.
 * Copied from OverlayCommands by Marcel Boeglin 2014.01.08.
 */
private void flattenImage(ImageStack stack, int slice, Overlay overlay, boolean showAll) {
  ImageProcessor ips = stack.getProcessor(slice);
  ImagePlus imp1 = new ImagePlus("temp", ips);
  int w = imp1.getWidth();
  int h = imp1.getHeight();
  for (int i=0; i<overlay.size(); i++) {
    Roi r = overlay.get(i);
    int roiPosition = r.getPosition();
    //IJ.log(slice+" "+i+" "+roiPosition+" "+showAll+" "+overlay.size());
    if (!(roiPosition==0 || roiPosition==slice || showAll))
      r.setLocation(w, h);
  }
  imp1.setOverlay(overlay);
  ImagePlus imp2 = imp1.flatten();
  stack.setPixels(imp2.getProcessor().getPixels(), slice);
}

代码示例来源：origin: net.imagej/ij

public void run(String arg) {
  imp = IJ.getImage();
  Roi roi = imp.getRoi();
  if (roi!=null && !roi.isArea())
    imp.deleteRoi(); // ignore any line selection
  ImageProcessor ip = imp.getProcessor();
  if (!showDialog(ip))
    return;
    processStack = true;
  if ((ip.getWidth()>1 && ip.getHeight()>1) || newWindow)
    ip.setInterpolationMethod(interpolationMethod);
  else
    ip.setInterpolationMethod(ImageProcessor.NONE);
      if (imp.getHideOverlay())
        overlay = null;
      if (overlay!=null && overlay.size()!=1)
        overlay = null;
      if (overlay!=null)
        overlay = overlay.duplicate();
      scale(ip, overlay);
    IJ.outOfMemory("Scale");
  IJ.showProgress(1.0);

代码示例来源：origin: net.imagej/ij

if (overlayClipboard==null)
    interp.error("Overlay clipboard empty");
  getImage().setOverlay(overlayClipboard);
  return Double.NaN;
} else if (name.equals("drawLabels")) {
  overlayDrawLabels = getBooleanArg();
  Overlay overlay = imp.getOverlay();
  if (overlay!=null) {
    overlay.drawLabels(overlayDrawLabels);
    imp.draw();
if (overlay==null)
  interp.error("No overlay");
int size = overlay.size();
if (name.equals("size")||name.equals("getSize"))
  return size;
  int index = (int)getArg();
  checkIndex(index, 0, size-1);
  overlay.remove(index);
  int index = (int)getArg();
  checkIndex(index, 0, size-1);
  Roi roi = overlay.get(index);
  if (roi==null)
  int y = (int)getLastArg();
  checkIndex(index, 0, size-1);
  Roi roi = overlay.get(index);

代码示例来源：origin: net.imagej/ij

private void scale(ImageProcessor ip, Overlay overlay) {
  if (newWindow) {
    Rectangle r = ip.getRoi();
    ImagePlus imp2 = imp.createImagePlus();
    imp2.setProcessor(title, ip.resize(newWidth, newHeight, averageWhenDownsizing));
    Calibration cal = imp2.getCalibration();
    if (cal.scaled()) {
      cal.pixelWidth *= 1.0/xscale;
      Roi roi = overlay.get(0);
      Rectangle bounds = roi.getBounds();
      if (roi instanceof ImageRoi && bounds.x==0 && bounds.y==0) {
        ImageRoi iroi = (ImageRoi)roi;
        ImageProcessor processor = iroi.getProcessor();
        processor.setInterpolationMethod(interpolationMethod);
        processor =processor.resize(newWidth, newHeight, averageWhenDownsizing);
        iroi.setProcessor(processor);
        imp2.setOverlay(new Overlay(iroi));

代码示例来源：origin: net.imagej/ij

if (IJ.debugMode) IJ.log("flattenStack");
if (getStackSize()==1)
  throw new UnsupportedOperationException("Image stack required");
boolean composite = isComposite();
if (getBitDepth()!=24)
  new ImageConverter(this).convertToRGB();
Overlay overlay1 = getOverlay();
ImageCanvas ic = getCanvas();
if (ic!=null)
  roiManagerOverlay = ic.getShowAllList();
setOverlay(null);
if (roiManagerOverlay!=null) {
if (composite && overlay2==null)
    return;
if (overlay2==null||overlay2.size()==0)
  throw new UnsupportedOperationException("A non-empty overlay is required");
ImageStack stack2 = getStack();
    for (int t=1; t<=getNFrames(); t++) {
      int s = z + (t-1)*Z;
      flattenImage(stack2, s, overlay2.duplicate(), showAll, z, t);
  for (int s=1; s<=stack2.getSize(); s++) {
    flattenImage(stack2, s, overlay2.duplicate(), showAll);

代码示例来源：origin: net.imagej/ij

Roi roi2 = getRoi();
Overlay overlay2 = getOverlay();
if (roi2==null && overlay2==null)
  throw new IllegalArgumentException("ROI or overlay required");
ByteProcessor mask = new ByteProcessor(getWidth(),getHeight());
mask.setColor(255);
if (roi2!=null)
  mask.fill(roi2);
else if (overlay2!=null) {
  if (overlay2.size()==1 && (overlay2.get(0) instanceof ImageRoi)) {
    ImageRoi iRoi = (ImageRoi)overlay2.get(0);
    ImageProcessor ip = iRoi.getProcessor();
    if (ip.getWidth()!=mask.getWidth() || ip.getHeight()!=mask.getHeight())
      return mask;
    for (int i=0; i<ip.getPixelCount(); i++) {
      if (ip.get(i)!=0)
        mask.set(i, 255);
    for (int i=0; i<overlay2.size(); i++)
      mask.fill(overlay2.get(i));

代码示例来源：origin: net.imagej/ij

void drawGrid(Shape shape) {
  if (shape==null) {
    Overlay overlay = imp.getOverlay();
    if (overlay!=null) {
      if (overlay.size()>1) {
        overlay.remove(GRID);
        imp.draw();
      } else
        imp.setOverlay(null);
    roi.setStrokeColor(Colors.getColor(color,Color.cyan));
    if (bold && linesV*linesH<5000) {
      ImageCanvas ic = imp.getCanvas();
      double mag = ic!=null?ic.getMagnification():1.0;
      double width = 2.0;
      if (mag<1.0)
        width = width/mag;
      roi.setStrokeWidth(width);
    IJ.showStatus(linesV*linesH+" nodes");
    Overlay overlay = imp.getOverlay();
    if (overlay!=null)
      overlay.remove(GRID);
    else
      overlay = new Overlay();
    overlay.add(roi, GRID);
    imp.setOverlay(overlay);

代码示例来源：origin: net.preibisch/multiview-reconstruction

Roi roi = imp.getRoi();
if ( roi == null || roi.getType() != Roi.RECTANGLE )
  imp.setRoi( new Rectangle( standardRectangle ) );
  roi = imp.getRoi();
  roiChanged = true;
final Rectangle rect = roi.getBounds();
  o = new Overlay();
  imp.setOverlay( o );
o.clear();
        or.setStrokeColor( Color.red );
      o.add( or );

代码示例来源：origin: net.imagej/ij

private void showToolSize(int deltaWidth, ImagePlus imp) {
  if (deltaWidth !=0) {
    width = oldWidth + deltaWidth;
    if (width<1) width=1;
    Roi circle = new OvalRoi(xStart-width/2, yStart-width/2, width, width);
    circle.setName(CIRCLE_NAME);
    circle.setStrokeColor(Color.red);
    overlay = imp.getOverlay();
    if (overlay==null)
      overlay = new Overlay();
    else if (overlay.size()>0 && CIRCLE_NAME.equals(overlay.get(overlay.size()-1).getName()))
      overlay.remove(overlay.size()-1);
    overlay.add(circle);
    imp.setOverlay(overlay);
  }
  IJ.showStatus((isPencil?"Pencil":"Brush")+" width: "+ width);
}

代码示例来源：origin: net.imagej/ij

private void changeBrushSize(float deltaWidth, ImagePlus imp) {
  if (deltaWidth!=0) {
    Overlay overlay = imp.getOverlay();
    width = oldWidth + deltaWidth;
    if (width < 0) width = 0;
    Roi circle = new OvalRoi(xStart-width/2, yStart-width/2, width, width);
    circle.setStrokeColor(Color.red);
    overlay = imp.getOverlay();
    if (overlay==null)
      overlay = new Overlay();
    if (mode == RESIZED)
      overlay.remove(overlay.size()-1);
    overlay.add(circle);
    imp.setOverlay(overlay);
  }
  IJ.showStatus("Overlay Brush width: "+IJ.d2s(width));
  mode = RESIZED;
}

代码示例来源：origin: ijpb/MorphoLibJ

int slice = displayImage.getCurrentSlice();
  roi = new ImageRoi(0, 0, resultImage.getImageStack().getProcessor( slice ) );
  roi.setOpacity( 1.0 );
  ImageProcessor lines = BinaryImages.binarize( resultImage.getImageStack().getProcessor( slice ) );
  lines.invert();
  lines.setLut( LUT.createLutFromColor( Color.red ) );
  roi = new ImageRoi( 0, 0, lines );
  roi.setZeroTransparent( true );
  roi = new ImageRoi(0, 0, BinaryImages.binarize( resultImage.getImageStack().getProcessor( slice ) ) );
  roi.setOpacity( 1.0 );
displayImage.setOverlay( new Overlay( roi ) );