public void actionPerformed(ActionEvent e) {
Button b = (Button) e.getSource();
if (b == null) return;
boolean imageThere = checkImage();
if (imageThere) {
if (b == originalB) {
reset(imp, ip);
filteredB.setEnabled(true);
} else if (b == filteredB) {
apply(imp, ip);
} else if (b == sampleB) {
reset(imp, ip);
sample();
apply(imp, ip);
} else if (b == stackB) {
applyStack();
} else if (b == helpB) {
IJ.showMessage(
"Help",
"Threshold Colour v1.0\n \n"
+ "Modification of Bob Dougherty's BandPass2 plugin by G.Landini to\n"
+ "threshold 24 bit RGB images based on Hue, Saturation and Brightness\n"
+ "or Red, Green and Blue components.\n \n"
+ "Pass: Band-pass filter (anything within range is displayed).\n \n"
+ "Stop: Band-reject filter (anything within range is NOT displayed).\n \n"
+ "Original: Shows the original image and updates the buffer when\n"
+ " switching to another image.\n \n"
+ "Filtered: Shows the filtered image.\n \n"
+ "Stack: Processes the rest of the slices in the stack (if any)\n"
+ " using the current settings.\n \n"
+ "Threshold: Shows the object/background in the foreground and\n"
+ " background colours selected in the ImageJ toolbar.\n \n"
+ "Invert: Swaps the fore/background colours.\n \n"
+ "Sample: (experimental) Sets the ranges of the filters based on the\n"
+ " pixel value componentd in a rectangular, user-defined, ROI.\n \n"
+ "HSB RGB: Selects HSB or RGB space and resets all the filters.\n \n"
+ "Note that the \'thresholded\' image is RGB, not 8 bit grey.");
}
updatePlot();
updateLabels();
imp.updateAndDraw();
} else {
IJ.beep();
IJ.showStatus("No Image");
}
notify();
}
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");
}