public Boolean confirm(String Message) {
   YesNoCancelDialog dg = new YesNoCancelDialog(null, "Confirm", Message);
   if (dg.yesPressed()) return true;
   else return false;
 }
  /** Ask for parameters and then execute. */
  public void run(String arg) {
    // 1 - Obtain the currently active image:
    ImagePlus imp = IJ.getImage();

    if (null == imp) {
      IJ.showMessage("There must be at least one image open");
      return;
    }

    if (imp.getBitDepth() != 8) {
      IJ.showMessage("Error", "Only 8-bit images are supported");
      return;
    }

    // 2 - Ask for parameters:
    GenericDialog gd = new GenericDialog("Auto Local Threshold");
    String[] methods = {
      "Try all",
      "Bernsen",
      "Contrast",
      "Mean",
      "Median",
      "MidGrey",
      "Niblack",
      "Otsu",
      "Phansalkar",
      "Sauvola"
    };
    gd.addMessage("Auto Local Threshold v1.5");
    gd.addChoice("Method", methods, methods[0]);
    gd.addNumericField("Radius", 15, 0);
    gd.addMessage("Special paramters (if different from default)");
    gd.addNumericField("Parameter_1", 0, 0);
    gd.addNumericField("Parameter_2", 0, 0);
    gd.addCheckbox("White objects on black background", true);
    if (imp.getStackSize() > 1) {
      gd.addCheckbox("Stack", false);
    }
    gd.addMessage("Thresholded result is always shown in white [255].");
    gd.showDialog();
    if (gd.wasCanceled()) return;

    // 3 - Retrieve parameters from the dialog
    String myMethod = gd.getNextChoice();
    int radius = (int) gd.getNextNumber();
    double par1 = (double) gd.getNextNumber();
    double par2 = (double) gd.getNextNumber();
    boolean doIwhite = gd.getNextBoolean();
    boolean doIstack = false;

    int stackSize = imp.getStackSize();
    if (stackSize > 1) doIstack = gd.getNextBoolean();

    // 4 - Execute!
    // long start = System.currentTimeMillis();
    if (myMethod.equals("Try all")) {
      ImageProcessor ip = imp.getProcessor();
      int xe = ip.getWidth();
      int ye = ip.getHeight();
      int ml = methods.length;
      ImagePlus imp2, imp3;
      ImageStack tstack = null, stackNew;
      if (stackSize > 1 && doIstack) {
        boolean doItAnyway = true;
        if (stackSize > 25) {
          YesNoCancelDialog d =
              new YesNoCancelDialog(
                  IJ.getInstance(),
                  "Auto Local Threshold",
                  "You might run out of memory.\n \nDisplay "
                      + stackSize
                      + " slices?\n \n \'No\' will process without display and\noutput results to the log window.");
          if (!d.yesPressed()) {
            //						doIlog=true; //will show in the log window
            doItAnyway = false;
          }
          if (d.cancelPressed()) return;
        }

        for (int j = 1; j <= stackSize; j++) {
          imp.setSlice(j);
          ip = imp.getProcessor();
          tstack = new ImageStack(xe, ye);
          for (int k = 1; k < ml; k++) tstack.addSlice(methods[k], ip.duplicate());
          imp2 = new ImagePlus("Auto Threshold", tstack);
          imp2.updateAndDraw();

          for (int k = 1; k < ml; k++) {
            imp2.setSlice(k);
            Object[] result = exec(imp2, methods[k], radius, par1, par2, doIwhite);
          }
          // if (doItAnyway){
          CanvasResizer cr = new CanvasResizer();
          stackNew = cr.expandStack(tstack, (xe + 2), (ye + 18), 1, 1);
          imp3 = new ImagePlus("Auto Threshold", stackNew);
          imp3.updateAndDraw();
          MontageMaker mm = new MontageMaker();
          mm.makeMontage(imp3, 3, 3, 1.0, 1, (ml - 1), 1, 0, true); // 3 columns and 3 rows
        }
        imp.setSlice(1);
        // if (doItAnyway)
        IJ.run("Images to Stack", "method=[Copy (center)] title=Montage");
        return;
      } else { // single image try all
        tstack = new ImageStack(xe, ye);
        for (int k = 1; k < ml; k++) tstack.addSlice(methods[k], ip.duplicate());
        imp2 = new ImagePlus("Auto Threshold", tstack);
        imp2.updateAndDraw();

        for (int k = 1; k < ml; k++) {
          imp2.setSlice(k);
          // IJ.log("analyzing slice with "+methods[k]);
          Object[] result = exec(imp2, methods[k], radius, par1, par2, doIwhite);
        }
        // imp2.setSlice(1);
        CanvasResizer cr = new CanvasResizer();
        stackNew = cr.expandStack(tstack, (xe + 2), (ye + 18), 1, 1);
        imp3 = new ImagePlus("Auto Threshold", stackNew);
        imp3.updateAndDraw();
        MontageMaker mm = new MontageMaker();
        mm.makeMontage(imp3, 3, 3, 1.0, 1, (ml - 1), 1, 0, true);
        return;
      }
    } else { // selected a method
      if (stackSize > 1 && doIstack) { // whole stack
        //				if (doIstackHistogram) {// one global histogram
        //					Object[] result = exec(imp, myMethod, noWhite, noBlack, doIwhite, doIset, doIlog,
        // doIstackHistogram );
        //				}
        //				else{ // slice by slice
        for (int k = 1; k <= stackSize; k++) {
          imp.setSlice(k);
          Object[] result = exec(imp, myMethod, radius, par1, par2, doIwhite);
        }
        //				}
        imp.setSlice(1);
      } else { // just one slice
        Object[] result = exec(imp, myMethod, radius, par1, par2, doIwhite);
      }
      // 5 - If all went well, show the image:
      // not needed here as the source image is binarised
    }
  }