/** Splits the specified image into separate channels. */
public static ImagePlus[] split(ImagePlus imp) {
if (imp.getType() == ImagePlus.COLOR_RGB) {
ImageStack[] stacks = splitRGB(imp.getStack(), true);
ImagePlus[] images = new ImagePlus[3];
images[0] = new ImagePlus("red", stacks[0]);
images[1] = new ImagePlus("green", stacks[1]);
images[2] = new ImagePlus("blue", stacks[2]);
return images;
}
int width = imp.getWidth();
int height = imp.getHeight();
int channels = imp.getNChannels();
int slices = imp.getNSlices();
int frames = imp.getNFrames();
int bitDepth = imp.getBitDepth();
int size = slices * frames;
Vector images = new Vector();
HyperStackReducer reducer = new HyperStackReducer(imp);
for (int c = 1; c <= channels; c++) {
ImageStack stack2 = new ImageStack(width, height, size); // create empty stack
stack2.setPixels(
imp.getProcessor().getPixels(), 1); // can't create ImagePlus will null 1st image
ImagePlus imp2 = new ImagePlus("C" + c + "-" + imp.getTitle(), stack2);
stack2.setPixels(null, 1);
imp.setPosition(c, 1, 1);
imp2.setDimensions(1, slices, frames);
imp2.setCalibration(imp.getCalibration());
reducer.reduce(imp2);
if (imp.isComposite() && ((CompositeImage) imp).getMode() == IJ.GRAYSCALE)
IJ.run(imp2, "Grays", "");
if (imp2.getNDimensions() > 3) imp2.setOpenAsHyperStack(true);
images.add(imp2);
}
ImagePlus[] array = new ImagePlus[images.size()];
return (ImagePlus[]) images.toArray(array);
}
/** Opens the image. Displays it if 'show' is true. Returns an ImagePlus object if successful. */
public ImagePlus open(boolean show) {
ImagePlus imp = null;
Object pixels;
ProgressBar pb = null;
ImageProcessor ip;
ColorModel cm = createColorModel(fi);
if (fi.nImages > 1) {
return openStack(cm, show);
}
switch (fi.fileType) {
case FileInfo.GRAY8:
case FileInfo.COLOR8:
case FileInfo.BITMAP:
pixels = readPixels(fi);
if (pixels == null) return null;
ip = new ByteProcessor(width, height, (byte[]) pixels, cm);
imp = new ImagePlus(fi.fileName, ip);
break;
case FileInfo.GRAY16_SIGNED:
case FileInfo.GRAY16_UNSIGNED:
case FileInfo.GRAY12_UNSIGNED:
pixels = readPixels(fi);
if (pixels == null) return null;
ip = new ShortProcessor(width, height, (short[]) pixels, cm);
imp = new ImagePlus(fi.fileName, ip);
break;
case FileInfo.GRAY32_INT:
case FileInfo.GRAY32_UNSIGNED:
case FileInfo.GRAY32_FLOAT:
case FileInfo.GRAY24_UNSIGNED:
case FileInfo.GRAY64_FLOAT:
pixels = readPixels(fi);
if (pixels == null) return null;
ip = new FloatProcessor(width, height, (float[]) pixels, cm);
imp = new ImagePlus(fi.fileName, ip);
break;
case FileInfo.RGB:
case FileInfo.BGR:
case FileInfo.ARGB:
case FileInfo.ABGR:
case FileInfo.BARG:
case FileInfo.RGB_PLANAR:
pixels = readPixels(fi);
if (pixels == null) return null;
ip = new ColorProcessor(width, height, (int[]) pixels);
imp = new ImagePlus(fi.fileName, ip);
break;
case FileInfo.RGB48:
case FileInfo.RGB48_PLANAR:
boolean planar = fi.fileType == FileInfo.RGB48_PLANAR;
Object[] pixelArray = (Object[]) readPixels(fi);
if (pixelArray == null) return null;
ImageStack stack = new ImageStack(width, height);
stack.addSlice("Red", pixelArray[0]);
stack.addSlice("Green", pixelArray[1]);
stack.addSlice("Blue", pixelArray[2]);
imp = new ImagePlus(fi.fileName, stack);
imp.setDimensions(3, 1, 1);
if (planar) imp.getProcessor().resetMinAndMax();
imp.setFileInfo(fi);
int mode = CompositeImage.COMPOSITE;
if (fi.description != null) {
if (fi.description.indexOf("mode=color") != -1) mode = CompositeImage.COLOR;
else if (fi.description.indexOf("mode=gray") != -1) mode = CompositeImage.GRAYSCALE;
}
imp = new CompositeImage(imp, mode);
if (!planar && fi.displayRanges == null) {
for (int c = 1; c <= 3; c++) {
imp.setPosition(c, 1, 1);
imp.setDisplayRange(minValue, maxValue);
}
imp.setPosition(1, 1, 1);
}
break;
}
imp.setFileInfo(fi);
setCalibration(imp);
if (fi.info != null) imp.setProperty("Info", fi.info);
if (fi.sliceLabels != null && fi.sliceLabels.length == 1 && fi.sliceLabels[0] != null)
imp.setProperty("Label", fi.sliceLabels[0]);
if (show) imp.show();
return imp;
}
public void itemStateChanged(ItemEvent e) {
ImagePlus imp = WindowManager.getCurrentImage();
if (imp == null) return;
if (!imp.isComposite()) {
int channels = imp.getNChannels();
if (channels == 1 && imp.getStackSize() <= 4) channels = imp.getStackSize();
if (imp.getBitDepth() == 24 || (channels > 1 && channels < CompositeImage.MAX_CHANNELS)) {
GenericDialog gd = new GenericDialog(imp.getTitle());
gd.addMessage("Convert to multi-channel composite image?");
gd.showDialog();
if (gd.wasCanceled()) return;
else IJ.doCommand("Make Composite");
} else {
IJ.error(
"Channels",
"A composite image is required (e.g., "
+ moreLabel
+ " Open HeLa Cells),\nor create one using "
+ moreLabel
+ " Make Composite.");
return;
}
}
if (!imp.isComposite()) return;
CompositeImage ci = (CompositeImage) imp;
Object source = e.getSource();
if (source == choice) {
int index = ((Choice) source).getSelectedIndex();
switch (index) {
case 0:
ci.setMode(IJ.COMPOSITE);
break;
case 1:
ci.setMode(IJ.COLOR);
break;
case 2:
ci.setMode(IJ.GRAYSCALE);
break;
}
ci.updateAndDraw();
if (Recorder.record) {
String mode = null;
switch (index) {
case 0:
mode = "composite";
break;
case 1:
mode = "color";
break;
case 2:
mode = "grayscale";
break;
}
Recorder.record("Stack.setDisplayMode", mode);
}
} else if (source instanceof Checkbox) {
for (int i = 0; i < checkbox.length; i++) {
Checkbox cb = (Checkbox) source;
if (cb == checkbox[i]) {
if (ci.getMode() == IJ.COMPOSITE) {
boolean[] active = ci.getActiveChannels();
active[i] = cb.getState();
if (Recorder.record) {
String str = "";
for (int c = 0; c < ci.getNChannels(); c++) str += active[c] ? "1" : "0";
Recorder.record("Stack.setActiveChannels", str);
Recorder.record("//Stack.toggleChannel", imp.getChannel());
}
} else {
imp.setPosition(i + 1, imp.getSlice(), imp.getFrame());
if (Recorder.record) Recorder.record("Stack.setChannel", i + 1);
}
ci.updateAndDraw();
return;
}
}
}
}
