ij.plugin.Converter Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of ij Show documentation
ImageJ is an open source Java image processing program inspired by NIH Image for the Macintosh.
There is a newer version: 1.54m
package ij.plugin;
import ij.*;
import ij.process.*;
import ij.gui.*;
import java.awt.*;

/** Implements the conversion commands in the Image/Type submenu. */
public class Converter implements PlugIn {

	/** obsolete */
	public static boolean newWindowCreated;
	private ImagePlus imp;

	public void run(String arg) {
		imp = WindowManager.getCurrentImage();
		if (imp!=null) {
			if ("RGB Color".equals(arg))
				imp.setProp(LUT.nameKey,null);
			if (imp.isComposite() && arg.equals("RGB Color") && !imp.getStack().isRGB() && !imp.getStack().isHSB() && !imp.getStack().isLab()) {
				if (imp.getWindow()==null && !ij.macro.Interpreter.isBatchMode())
					RGBStackConverter.convertToRGB(imp);
				else {
					(new RGBStackConverter()).run("");
					imp.setTitle(imp.getTitle()); // updates size in Window menu
				}
			} else if (imp.lock()) {
				convert(arg);
				imp.unlock();
				imp.setTitle(imp.getTitle());
			} else 
				IJ.log("<>");
		} else
			IJ.noImage();
	}

	/** Converts the ImagePlus to the specified image type. The string
	argument corresponds to one of the labels in the Image/Type submenu
	("8-bit", "16-bit", "32-bit", "8-bit Color", "RGB Color", "RGB Stack", "HSB Stack", "Lab Stack" or "HSB (32-bit)"). */
	public void convert(String item) {
		int type = imp.getType();
		ImageStack stack = null;
		if (imp.getStackSize()>1)
			stack = imp.getStack();
		String msg = "Converting to " + item;
		IJ.showStatus(msg + "...");
	 	long start = System.currentTimeMillis();
	 	Roi roi = imp.getRoi();
	 	imp.deleteRoi();
	 	if (imp.isThreshold())
			imp.getProcessor().resetThreshold();
	 	boolean saveChanges = imp.changes;
		imp.changes = IJ.getApplet()==null; //if not applet, set 'changes' flag
	 	ImageWindow win = imp.getWindow();
		try {
 			if (stack!=null) {
 				boolean wasVirtual = stack.isVirtual();
				// do stack conversions
		    	if (stack.isRGB() && item.equals("RGB Color")) {
					new ImageConverter(imp).convertRGBStackToRGB();
					if (win!=null) new ImageWindow(imp, imp.getCanvas()); // replace StackWindow with ImageWindow
		    	} else if (stack.isHSB() && item.equals("RGB Color")) {
					new ImageConverter(imp).convertHSBToRGB();
					if (win!=null) new ImageWindow(imp, imp.getCanvas());
		    	} else if (stack.isHSB32() && item.equals("RGB Color")) {
					new ImageConverter(imp).convertHSB32ToRGB();
					if (win!=null) new ImageWindow(imp, imp.getCanvas());
		    	} else if (stack.isLab() && item.equals("RGB Color")) {
					new ImageConverter(imp).convertLabToRGB();
					if (win!=null) new ImageWindow(imp, imp.getCanvas());
				} else if (item.equals("8-bit"))
					new StackConverter(imp).convertToGray8();
				else if (item.equals("16-bit"))
					new StackConverter(imp).convertToGray16();
				else if (item.equals("32-bit"))
					new ImageConverter(imp).convertToGray32();
				else if (item.equals("RGB Color"))
					new StackConverter(imp).convertToRGB();
				else if (item.equals("RGB Stack"))
					new StackConverter(imp).convertToRGBHyperstack();
				else if (item.equals("HSB Stack"))
					new StackConverter(imp).convertToHSBHyperstack();
				else if (item.equals("HSB (32-bit)"))
					new StackConverter(imp).convertToHSB32Hyperstack();
				else if (item.equals("Lab Stack"))
					new StackConverter(imp).convertToLabHyperstack();
		    	else if (item.equals("8-bit Color")) {
		    		int nColors = getNumber();
		    		if (nColors!=0)
						new StackConverter(imp).convertToIndexedColor(nColors);
				} else throw new IllegalArgumentException();
				if (wasVirtual) imp.setTitle(imp.getTitle());
			} else {
				// do single image conversions
				Undo.setup(Undo.TYPE_CONVERSION, imp);
		    	ImageConverter ic = new ImageConverter(imp);
				if (item.equals("8-bit"))
					ic.convertToGray8();
				else if (item.equals("16-bit"))
					ic.convertToGray16();
				else if (item.equals("32-bit"))
					ic.convertToGray32();
				else if (item.equals("RGB Stack")) {
			    	Undo.reset(); // Reversible; no need for Undo
					ic.convertToRGBStack();
		    	} else if (item.equals("HSB Stack")) {
			    	Undo.reset();
					ic.convertToHSB();
		    	} else if (item.equals("HSB (32-bit)")) {
			    	Undo.reset();
					ic.convertToHSB32();
		    	} else if (item.equals("Lab Stack")) {
			    	Undo.reset();
					ic.convertToLab();
		    	} else if (item.equals("RGB Color")) {
					ic.convertToRGB();
		    	} else if (item.equals("8-bit Color")) {
		    		int nColors = getNumber();
		 			start = System.currentTimeMillis();
					if (nColors!=0)
						ic.convertRGBtoIndexedColor(nColors);
				} else {
					imp.changes = saveChanges;
					return;
				}
				IJ.showProgress(1.0);
			}
			if ("RGB Color".equals(item))
				imp.setProp(LUT.nameKey,null);
		}
		catch (IllegalArgumentException e) {
			unsupportedConversion(imp);
			IJ.showStatus("");
	    	Undo.reset();
	    	imp.changes = saveChanges;
			Menus.updateMenus();
			Macro.abort();
			return;
		}
		if (roi!=null)
			imp.setRoi(roi);
		IJ.showTime(imp, start, "");
		imp.repaintWindow();
		Menus.updateMenus();
	}

	void unsupportedConversion(ImagePlus imp) {
		IJ.error("Converter",
			"Supported Conversions:\n" +
			" \n" +
			"8-bit -> 16-bit*\n" +
			"8-bit -> 32-bit*\n" +
			"8-bit -> RGB Color*\n" +
			"16-bit -> 8-bit*\n" +
			"16-bit -> 32-bit*\n" +
			"16-bit -> RGB Color*\n" +
			"32-bit -> 8-bit*\n" +
			"32-bit -> 16-bit\n" +
			"32-bit -> RGB Color*\n" +
			"8-bit Color -> 8-bit (grayscale)*\n" +
			"8-bit Color -> RGB Color\n" +
			"RGB -> 8-bit (grayscale)*\n" +
			"RGB -> 8-bit Color*\n" +
			"RGB -> RGB Stack*\n" +
			"RGB -> HSB Stack*\n" +
			"RGB -> Lab Stack\n" +
			"RGB Stack -> RGB Color\n" +
			"HSB Stack -> RGB Color\n" +
			" \n" +
			"* works with stacks\n"
			);
	}

	int getNumber() {
		if (imp.getType()!=ImagePlus.COLOR_RGB)
			return 256;
		GenericDialog gd = new GenericDialog("MedianCut");
		gd.addNumericField("Number of Colors (2-256):", 256, 0);
		gd.showDialog();
		if (gd.wasCanceled())
			return 0;
		int n = (int)gd.getNextNumber();
		if (n<2) n = 2;
		if (n>256) n = 256;
		return n;
	}
		
}