/**
* Splits the specified RGB stack into three 8-bit grayscale stacks. Deletes the source stack if
* keepSource is false.
*/
public static ImageStack[] splitRGB(ImageStack rgb, boolean keepSource) {
int w = rgb.getWidth();
int h = rgb.getHeight();
ImageStack[] channels = new ImageStack[3];
for (int i = 0; i < 3; i++) channels[i] = new ImageStack(w, h);
byte[] r, g, b;
ColorProcessor cp;
int slice = 1;
int inc = keepSource ? 1 : 0;
int n = rgb.getSize();
for (int i = 1; i <= n; i++) {
IJ.showStatus(i + "/" + n);
r = new byte[w * h];
g = new byte[w * h];
b = new byte[w * h];
cp = (ColorProcessor) rgb.getProcessor(slice);
slice += inc;
cp.getRGB(r, g, b);
if (!keepSource) rgb.deleteSlice(1);
channels[0].addSlice(null, r);
channels[1].addSlice(null, g);
channels[2].addSlice(null, b);
IJ.showProgress((double) i / n);
}
return channels;
}
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);
}
public void reduceStack(ImagePlus imp, int factor) {
ImageStack stack = imp.getStack();
boolean virtual = stack.isVirtual();
int n = stack.getSize();
ImageStack stack2 = new ImageStack(stack.getWidth(), stack.getHeight());
for (int i = 1; i <= n; i += factor) {
if (virtual) IJ.showProgress(i, n);
stack2.addSlice(stack.getSliceLabel(i), stack.getProcessor(i));
}
imp.setStack(null, stack2);
if (virtual) {
IJ.showProgress(1.0);
imp.setTitle(imp.getTitle());
}
Calibration cal = imp.getCalibration();
if (cal.scaled()) cal.pixelDepth *= factor;
}
ImagePlus duplicateStack(ImagePlus img1) {
ImageStack stack1 = img1.getStack();
int width = stack1.getWidth();
int height = stack1.getHeight();
int n = stack1.getSize();
ImageStack stack2 = img1.createEmptyStack();
try {
for (int i = 1; i <= n; i++) {
ImageProcessor ip1 = stack1.getProcessor(i);
ip1.resetRoi();
ImageProcessor ip2 = ip1.crop();
stack2.addSlice(stack1.getSliceLabel(i), ip2);
}
} catch (OutOfMemoryError e) {
stack2.trim();
stack2 = null;
return null;
}
return new ImagePlus("Duplicate", stack2);
}
ImageProcessor setup(ImagePlus imp) {
ImageProcessor ip;
int type = imp.getType();
if (type != ImagePlus.COLOR_RGB) return null;
ip = imp.getProcessor();
int id = imp.getID();
int slice = imp.getCurrentSlice();
if ((id != previousImageID) | (slice != previousSlice) | (flag)) {
flag = false; // if true, flags a change from HSB to RGB or viceversa
numSlices = imp.getStackSize();
stack = imp.getStack();
width = stack.getWidth();
height = stack.getHeight();
numPixels = width * height;
hSource = new byte[numPixels];
sSource = new byte[numPixels];
bSource = new byte[numPixels];
// restore = (int[])ip.getPixelsCopy(); //This runs into trouble sometimes, so do it the
// long way:
int[] temp = (int[]) ip.getPixels();
restore = new int[numPixels];
for (int i = 0; i < numPixels; i++) restore[i] = temp[i];
fillMask = new int[numPixels];
// Get hsb or rgb from image.
ColorProcessor cp = (ColorProcessor) ip;
IJ.showStatus("Gathering data");
if (isRGB) cp.getRGB(hSource, sSource, bSource);
else cp.getHSB(hSource, sSource, bSource);
IJ.showStatus("done");
// Create a spectrum ColorModel for the Hue histogram plot.
Color c;
byte[] reds = new byte[256];
byte[] greens = new byte[256];
byte[] blues = new byte[256];
for (int i = 0; i < 256; i++) {
c = Color.getHSBColor(i / 255f, 1f, 1f);
reds[i] = (byte) c.getRed();
greens[i] = (byte) c.getGreen();
blues[i] = (byte) c.getBlue();
}
ColorModel cm = new IndexColorModel(8, 256, reds, greens, blues);
// Make an image with just the hue from the RGB image and the spectrum LUT.
// This is just for a hue histogram for the plot. Do not show it.
// ByteProcessor bpHue = new ByteProcessor(width,height,h,cm);
ByteProcessor bpHue = new ByteProcessor(width, height, hSource, cm);
ImagePlus impHue = new ImagePlus("Hue", bpHue);
// impHue.show();
ByteProcessor bpSat = new ByteProcessor(width, height, sSource, cm);
ImagePlus impSat = new ImagePlus("Sat", bpSat);
// impSat.show();
ByteProcessor bpBri = new ByteProcessor(width, height, bSource, cm);
ImagePlus impBri = new ImagePlus("Bri", bpBri);
// impBri.show();
plot.setHistogram(impHue, 0);
splot.setHistogram(impSat, 1);
bplot.setHistogram(impBri, 2);
updateLabels();
updatePlot();
updateScrollBars();
imp.updateAndDraw();
}
previousImageID = id;
previousSlice = slice;
return ip;
}
