/** Performs actual projection using specified method. */
public void doProjection() {
if (imp == null) return;
sliceCount = 0;
if (method < AVG_METHOD || method > MEDIAN_METHOD) method = AVG_METHOD;
for (int slice = startSlice; slice <= stopSlice; slice += increment) sliceCount++;
if (method == MEDIAN_METHOD) {
projImage = doMedianProjection();
return;
}
// Create new float processor for projected pixels.
FloatProcessor fp = new FloatProcessor(imp.getWidth(), imp.getHeight());
ImageStack stack = imp.getStack();
RayFunction rayFunc = getRayFunction(method, fp);
if (IJ.debugMode == true) {
IJ.log("\nProjecting stack from: " + startSlice + " to: " + stopSlice);
}
// Determine type of input image. Explicit determination of
// processor type is required for subsequent pixel
// manipulation. This approach is more efficient than the
// more general use of ImageProcessor's getPixelValue and
// putPixel methods.
int ptype;
if (stack.getProcessor(1) instanceof ByteProcessor) ptype = BYTE_TYPE;
else if (stack.getProcessor(1) instanceof ShortProcessor) ptype = SHORT_TYPE;
else if (stack.getProcessor(1) instanceof FloatProcessor) ptype = FLOAT_TYPE;
else {
IJ.error("Z Project", "Non-RGB stack required");
return;
}
// Do the projection.
for (int n = startSlice; n <= stopSlice; n += increment) {
IJ.showStatus("ZProjection " + color + ": " + n + "/" + stopSlice);
IJ.showProgress(n - startSlice, stopSlice - startSlice);
projectSlice(stack.getPixels(n), rayFunc, ptype);
}
// Finish up projection.
if (method == SUM_METHOD) {
fp.resetMinAndMax();
projImage = new ImagePlus(makeTitle(), fp);
} else if (method == SD_METHOD) {
rayFunc.postProcess();
fp.resetMinAndMax();
projImage = new ImagePlus(makeTitle(), fp);
} else {
rayFunc.postProcess();
projImage = makeOutputImage(imp, fp, ptype);
}
if (projImage == null) IJ.error("Z Project", "Error computing projection.");
}
private void doHSRGBProjection(ImagePlus rgbImp) {
ImageStack stack = rgbImp.getStack();
ImageStack stack2 = new ImageStack(stack.getWidth(), stack.getHeight());
for (int i = startSlice; i <= stopSlice; i++) stack2.addSlice(null, stack.getProcessor(i));
startSlice = 1;
stopSlice = stack2.getSize();
doRGBProjection(stack2);
}
void createNewStack(ImagePlus imp, ImageProcessor ip) {
int nSlices = imp.getStackSize();
int w = imp.getWidth(), h = imp.getHeight();
ImagePlus imp2 = imp.createImagePlus();
Rectangle r = ip.getRoi();
boolean crop = r.width != imp.getWidth() || r.height != imp.getHeight();
ImageStack stack1 = imp.getStack();
ImageStack stack2 = new ImageStack(newWidth, newHeight);
ImageProcessor ip1, ip2;
int method = interpolationMethod;
if (w == 1 || h == 1) method = ImageProcessor.NONE;
for (int i = 1; i <= nSlices; i++) {
IJ.showStatus("Scale: " + i + "/" + nSlices);
ip1 = stack1.getProcessor(i);
String label = stack1.getSliceLabel(i);
if (crop) {
ip1.setRoi(r);
ip1 = ip1.crop();
}
ip1.setInterpolationMethod(method);
ip2 = ip1.resize(newWidth, newHeight, averageWhenDownsizing);
if (ip2 != null) stack2.addSlice(label, ip2);
IJ.showProgress(i, nSlices);
}
imp2.setStack(title, stack2);
Calibration cal = imp2.getCalibration();
if (cal.scaled()) {
cal.pixelWidth *= 1.0 / xscale;
cal.pixelHeight *= 1.0 / yscale;
}
IJ.showProgress(1.0);
int[] dim = imp.getDimensions();
imp2.setDimensions(dim[2], dim[3], dim[4]);
if (imp.isComposite()) {
imp2 = new CompositeImage(imp2, ((CompositeImage) imp).getMode());
((CompositeImage) imp2).copyLuts(imp);
}
if (imp.isHyperStack()) imp2.setOpenAsHyperStack(true);
if (newDepth > 0 && newDepth != oldDepth)
imp2 = (new Resizer()).zScale(imp2, newDepth, interpolationMethod);
if (imp2 != null) {
imp2.show();
imp2.changes = true;
}
}
void createNewStack(ImagePlus imp, ImageProcessor ip) {
Rectangle r = ip.getRoi();
boolean crop = r.width != imp.getWidth() || r.height != imp.getHeight();
int nSlices = imp.getStackSize();
ImageStack stack1 = imp.getStack();
ImageStack stack2 = new ImageStack(newWidth, newHeight);
ImageProcessor ip1, ip2;
boolean interp = interpolate;
if (imp.getWidth() == 1 || imp.getHeight() == 1) interp = false;
for (int i = 1; i <= nSlices; i++) {
IJ.showStatus("Scale: " + i + "/" + nSlices);
ip1 = stack1.getProcessor(i);
String label = stack1.getSliceLabel(i);
if (crop) {
ip1.setRoi(r);
ip1 = ip1.crop();
}
ip1.setInterpolate(interp);
ip2 = ip1.resize(newWidth, newHeight);
if (ip2 != null) stack2.addSlice(label, ip2);
IJ.showProgress(i, nSlices);
}
ImagePlus imp2 = imp.createImagePlus();
imp2.setStack(title, stack2);
Calibration cal = imp2.getCalibration();
if (cal.scaled()) {
cal.pixelWidth *= 1.0 / xscale;
cal.pixelHeight *= 1.0 / yscale;
}
int[] dim = imp.getDimensions();
imp2.setDimensions(dim[2], dim[3], dim[4]);
IJ.showProgress(1.0);
if (imp.isComposite()) {
imp2 = new CompositeImage(imp2, 0);
((CompositeImage) imp2).copyLuts(imp);
}
if (imp.isHyperStack()) imp2.setOpenAsHyperStack(true);
imp2.show();
imp2.changes = true;
}
ImagePlus doMedianProjection() {
IJ.showStatus("Calculating median...");
ImageStack stack = imp.getStack();
ImageProcessor[] slices = new ImageProcessor[sliceCount];
int index = 0;
for (int slice = startSlice; slice <= stopSlice; slice += increment)
slices[index++] = stack.getProcessor(slice);
ImageProcessor ip2 = slices[0].duplicate();
ip2 = ip2.convertToFloat();
float[] values = new float[sliceCount];
int width = ip2.getWidth();
int height = ip2.getHeight();
int inc = Math.max(height / 30, 1);
for (int y = 0; y < height; y++) {
if (y % inc == 0) IJ.showProgress(y, height - 1);
for (int x = 0; x < width; x++) {
for (int i = 0; i < sliceCount; i++) values[i] = slices[i].getPixelValue(x, y);
ip2.putPixelValue(x, y, median(values));
}
}
if (imp.getBitDepth() == 8) ip2 = ip2.convertToByte(false);
IJ.showProgress(1, 1);
return new ImagePlus(makeTitle(), ip2);
}
/*------------------------------------------------------------------*/
public void run(String arg) {
ImagePlus imp = WindowManager.getCurrentImage();
this.imp = imp;
if (imp == null) {
IJ.noImage();
return;
}
if ((1 < imp.getStackSize()) && (imp.getType() == imp.COLOR_256)) {
IJ.error("Stack of color images not supported (use grayscale)");
return;
}
if (1 < imp.getStackSize()) {
if (imp.getStack().isRGB()) {
IJ.error("RGB color images not supported (use grayscale)");
return;
}
}
if (1 < imp.getStackSize()) {
if (imp.getStack().isHSB()) {
IJ.error("HSB color images not supported (use grayscale)");
return;
}
}
if (imp.getType() == imp.COLOR_256) {
IJ.error("Indexed color images not supported (use grayscale)");
return;
}
if (imp.getType() == imp.COLOR_RGB) {
IJ.error("Color images not supported (use grayscale)");
return;
}
differentialsDialog dialog =
new differentialsDialog(IJ.getInstance(), "Differentials", true, operation);
GUI.center(dialog);
dialog.setVisible(true);
cancel = dialog.getCancel();
operation = dialog.getOperation();
dialog.dispose();
if (cancel) {
return;
}
imp.startTiming();
if (1 < imp.getStackSize()) {
if (!(imp.getProcessor().getPixels() instanceof float[])) {
new StackConverter(imp).convertToGray32();
}
} else {
if (!(imp.getProcessor().getPixels() instanceof float[])) {
new ImageConverter(imp).convertToGray32();
}
}
ImageStack stack = imp.getStack();
stackSize = stack.getSize();
Undo.reset();
setupProgressBar();
resetProgressBar();
for (int i = 1; (i <= stackSize); i++) {
ImageProcessor ip = stack.getProcessor(i);
doIt(ip);
imp.getProcessor().resetMinAndMax();
imp.setSlice(i);
imp.updateAndRepaintWindow();
}
imp.getProcessor().resetMinAndMax();
imp.setSlice(1);
imp.updateAndRepaintWindow();
cleanUpProgressBar();
IJ.showTime(imp, imp.getStartTime(), "Differentials: ");
ImageWindow win = imp.getWindow();
if (win != null) {
win.running = false;
}
} /* end run */
