/**
* 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;
}
// Conversion Options
void conversions() {
double[] weights = ColorProcessor.getWeightingFactors();
boolean weighted = !(weights[0] == 1d / 3d && weights[1] == 1d / 3d && weights[2] == 1d / 3d);
// boolean weighted = !(Math.abs(weights[0]-1d/3d)<0.0001 && Math.abs(weights[1]-1d/3d)<0.0001
// && Math.abs(weights[2]-1d/3d)<0.0001);
GenericDialog gd = new GenericDialog("Conversion Options");
gd.addCheckbox("Scale when converting", ImageConverter.getDoScaling());
String prompt = "Weighted RGB conversions";
if (weighted)
prompt +=
" (" + IJ.d2s(weights[0]) + "," + IJ.d2s(weights[1]) + "," + IJ.d2s(weights[2]) + ")";
gd.addCheckbox(prompt, weighted);
gd.showDialog();
if (gd.wasCanceled()) return;
ImageConverter.setDoScaling(gd.getNextBoolean());
Prefs.weightedColor = gd.getNextBoolean();
if (!Prefs.weightedColor) ColorProcessor.setWeightingFactors(1d / 3d, 1d / 3d, 1d / 3d);
else if (Prefs.weightedColor && !weighted)
ColorProcessor.setWeightingFactors(0.299, 0.587, 0.114);
return;
}
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;
}
void sample() {
byte[] hsSource, ssSource, bsSource;
// ImageProcessor ip2;
// ip2 = imp.getProcessor();
Rectangle myroi = ip.getRoi();
int swidth = myroi.width;
int sheight = myroi.height;
int sy = myroi.y;
int sx = myroi.x;
if (swidth == width && sheight == height) {
IJ.showMessage("Select a rectangular ROI");
IJ.beep();
return;
}
IJ.run("Select None");
int snumPixels = swidth * sheight;
hsSource = new byte[snumPixels];
ssSource = new byte[snumPixels];
bsSource = new byte[snumPixels];
int[] pixs = new int[snumPixels];
int[] bin = new int[256];
int counter = 0, pi = 0, rangePassH = 0, rangeStopH = 0, rangePassL = 0, rangeStopL = 0, i, j;
for (i = sy; i < sy + sheight; i++) {
for (j = sx; j < sx + swidth; j++) {
pixs[counter++] = ip.getPixel(j, i);
}
}
// Get hsb or rgb from roi.
ColorProcessor cp2 = new ColorProcessor(swidth, sheight, pixs);
int iminhue = 256, imaxhue = -1, iminsat = 256, imaxsat = -1, iminbri = 256, imaxbri = -1;
int iminred = 256, imaxred = -1, imingre = 256, imaxgre = -1, iminblu = 256, imaxblu = -1;
if (isRGB) cp2.getRGB(hsSource, ssSource, bsSource);
else cp2.getHSB(hsSource, ssSource, bsSource);
for (i = 0; i < snumPixels; i++) {
bin[hsSource[i] & 255] = 1;
if ((hsSource[i] & 255) > imaxhue) imaxhue = (hsSource[i] & 255);
if ((hsSource[i] & 255) < iminhue) iminhue = (hsSource[i] & 255);
if ((ssSource[i] & 255) > imaxsat) imaxsat = (ssSource[i] & 255);
if ((ssSource[i] & 255) < iminsat) iminsat = (ssSource[i] & 255);
if ((bsSource[i] & 255) > imaxbri) imaxbri = (bsSource[i] & 255);
if ((bsSource[i] & 255) < iminbri) iminbri = (bsSource[i] & 255);
// IJ.showMessage("h:"+minhue+"H:"+maxhue+"s:"+minsat+"S:"+maxsat+"b:"+minbri+"B:"+maxbri);
}
if (!isRGB) { // get pass or stop filter whichever has a narrower range
for (i = 0; i < 256; i++) {
if (bin[i] > 0) {
rangePassL = i;
break;
}
}
for (i = 255; i >= 0; i--) {
if (bin[i] > 0) {
rangePassH = i;
break;
}
}
for (i = 0; i < 256; i++) {
if (bin[i] == 0) {
rangeStopL = i;
break;
}
}
for (i = 255; i >= 0; i--) {
if (bin[i] == 0) {
rangeStopH = i;
break;
}
}
if ((rangePassH - rangePassL) < (rangeStopH - rangeStopL)) {
bandPassH.setState(true);
bandStopH.setState(false);
iminhue = rangePassL;
imaxhue = rangePassH;
} else {
bandPassH.setState(false);
bandStopH.setState(true);
iminhue = rangeStopL;
imaxhue = rangeStopH;
}
} else {
bandPassH.setState(true);
bandStopH.setState(false);
}
adjustMinHue(iminhue);
minSlider.setValue(iminhue);
adjustMaxHue(imaxhue);
maxSlider.setValue(imaxhue);
adjustMinSat(iminsat);
minSlider2.setValue(iminsat);
adjustMaxSat(imaxsat);
maxSlider2.setValue(imaxsat);
adjustMinBri(iminbri);
minSlider3.setValue(iminbri);
adjustMaxBri(imaxbri);
maxSlider3.setValue(imaxbri);
originalB.setEnabled(true);
// IJ.showStatus("done");
}