void lineToArea(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null || !roi.isLine()) {
IJ.error("Line to Area", "Line selection required");
return;
}
Undo.setup(Undo.ROI, imp);
Roi roi2 = null;
if (roi.getType() == Roi.LINE) {
FloatPolygon p = roi.getFloatPolygon();
roi2 = new PolygonRoi(p, Roi.POLYGON);
} else {
ImageProcessor ip2 = new ByteProcessor(imp.getWidth(), imp.getHeight());
ip2.setColor(255);
roi.drawPixels(ip2);
// new ImagePlus("ip2", ip2.duplicate()).show();
ip2.setThreshold(255, 255, ImageProcessor.NO_LUT_UPDATE);
ThresholdToSelection tts = new ThresholdToSelection();
roi2 = tts.convert(ip2);
}
transferProperties(roi, roi2);
roi2.setStrokeWidth(0);
Color c = roi2.getStrokeColor();
if (c != null) // remove any transparency
roi2.setStrokeColor(new Color(c.getRed(), c.getGreen(), c.getBlue()));
imp.setRoi(roi2);
Roi.previousRoi = (Roi) roi.clone();
}
void createEllipse(ImagePlus imp) {
IJ.showStatus("Fitting ellipse");
Roi roi = imp.getRoi();
if (roi == null) {
noRoi("Fit Ellipse");
return;
}
if (roi.isLine()) {
IJ.error("Fit Ellipse", "\"Fit Ellipse\" does not work with line selections");
return;
}
ImageProcessor ip = imp.getProcessor();
ip.setRoi(roi);
int options = Measurements.CENTROID + Measurements.ELLIPSE;
ImageStatistics stats = ImageStatistics.getStatistics(ip, options, null);
double dx = stats.major * Math.cos(stats.angle / 180.0 * Math.PI) / 2.0;
double dy = -stats.major * Math.sin(stats.angle / 180.0 * Math.PI) / 2.0;
double x1 = stats.xCentroid - dx;
double x2 = stats.xCentroid + dx;
double y1 = stats.yCentroid - dy;
double y2 = stats.yCentroid + dy;
double aspectRatio = stats.minor / stats.major;
imp.killRoi();
imp.setRoi(new EllipseRoi(x1, y1, x2, y2, aspectRatio));
}
void createMask(ImagePlus imp) {
Roi roi = imp.getRoi();
boolean useInvertingLut = Prefs.useInvertingLut;
Prefs.useInvertingLut = false;
if (roi == null || !(roi.isArea() || roi.getType() == Roi.POINT)) {
createMaskFromThreshold(imp);
Prefs.useInvertingLut = useInvertingLut;
return;
}
ImagePlus maskImp = null;
Frame frame = WindowManager.getFrame("Mask");
if (frame != null && (frame instanceof ImageWindow))
maskImp = ((ImageWindow) frame).getImagePlus();
if (maskImp == null) {
ImageProcessor ip = new ByteProcessor(imp.getWidth(), imp.getHeight());
if (!Prefs.blackBackground) ip.invertLut();
maskImp = new ImagePlus("Mask", ip);
maskImp.show();
}
ImageProcessor ip = maskImp.getProcessor();
ip.setRoi(roi);
ip.setValue(255);
ip.fill(ip.getMask());
maskImp.updateAndDraw();
Prefs.useInvertingLut = useInvertingLut;
}
void runMacro(String arg) {
Roi roi = imp.getRoi();
if (IJ.macroRunning()) {
String options = Macro.getOptions();
if (options != null
&& (options.indexOf("grid=") != -1 || options.indexOf("interpolat") != -1)) {
IJ.run("Rotate... ", options); // run Image>Transform>Rotate
return;
}
}
if (roi == null) {
noRoi("Rotate>Selection");
return;
}
roi = (Roi) roi.clone();
if (arg.equals("rotate")) {
double d = Tools.parseDouble(angle);
if (Double.isNaN(d)) angle = "15";
String value = IJ.runMacroFile("ij.jar:RotateSelection", angle);
if (value != null) angle = value;
} else if (arg.equals("enlarge")) {
String value = IJ.runMacroFile("ij.jar:EnlargeSelection", enlarge);
if (value != null) enlarge = value;
Roi.previousRoi = roi;
}
}
void addToRoiManager(ImagePlus imp) {
if (IJ.macroRunning() && Interpreter.isBatchModeRoiManager())
IJ.error("run(\"Add to Manager\") may not work in batch mode macros");
Frame frame = WindowManager.getFrame("ROI Manager");
if (frame == null) IJ.run("ROI Manager...");
if (imp == null) return;
Roi roi = imp.getRoi();
if (roi == null) return;
frame = WindowManager.getFrame("ROI Manager");
if (frame == null || !(frame instanceof RoiManager)) IJ.error("ROI Manager not found");
RoiManager rm = (RoiManager) frame;
boolean altDown = IJ.altKeyDown();
IJ.setKeyUp(IJ.ALL_KEYS);
if (altDown && !IJ.macroRunning()) IJ.setKeyDown(KeyEvent.VK_SHIFT);
if (roi.getState() == Roi.CONSTRUCTING) { // wait (up to 2 sec.) until ROI finished
long start = System.currentTimeMillis();
while (true) {
IJ.wait(10);
if (roi.getState() != Roi.CONSTRUCTING) break;
if ((System.currentTimeMillis() - start) > 2000) {
IJ.beep();
IJ.error("Add to Manager", "Selection is not complete");
return;
}
}
}
rm.runCommand("add");
IJ.setKeyUp(IJ.ALL_KEYS);
}
void fitSpline() {
Roi roi = imp.getRoi();
if (roi == null) {
noRoi("Spline");
return;
}
int type = roi.getType();
boolean segmentedSelection = type == Roi.POLYGON || type == Roi.POLYLINE;
if (!(segmentedSelection
|| type == Roi.FREEROI
|| type == Roi.TRACED_ROI
|| type == Roi.FREELINE)) {
IJ.error("Spline", "Polygon or polyline selection required");
return;
}
if (roi instanceof EllipseRoi) return;
PolygonRoi p = (PolygonRoi) roi;
if (!segmentedSelection) {
if (p.subPixelResolution()) p = trimFloatPolygon(p, p.getUncalibratedLength());
else p = trimPolygon(p, p.getUncalibratedLength());
}
String options = Macro.getOptions();
if (options != null && options.indexOf("straighten") != -1) p.fitSplineForStraightening();
else if (options != null && options.indexOf("remove") != -1) p.removeSplineFit();
else p.fitSpline();
imp.draw();
LineWidthAdjuster.update();
}
private void enlarge(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi != null) {
Undo.setup(Undo.ROI, imp);
roi = (Roi) roi.clone();
(new RoiEnlarger()).run("");
} else noRoi("Enlarge");
}
void toBoundingBox(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null) {
noRoi("To Bounding Box");
return;
}
Rectangle r = roi.getBounds();
imp.killRoi();
imp.setRoi(new Roi(r.x, r.y, r.width, r.height));
}
// Added by Marcel Boeglin 2013.09.22
private Overlay projectHyperStackRois(Overlay overlay) {
if (overlay == null) return null;
int t1 = imp.getFrame();
int channels = projImage.getNChannels();
int slices = 1;
int frames = projImage.getNFrames();
Overlay overlay2 = new Overlay();
Roi roi;
int c, z, t;
int size = channels * slices * frames;
for (Roi r : overlay.toArray()) {
c = r.getCPosition();
z = r.getZPosition();
t = r.getTPosition();
roi = (Roi) r.clone();
if (size == channels) { // current time frame
if (z >= startSlice && z <= stopSlice && t == t1 || c == 0) {
roi.setPosition(c);
overlay2.add(roi);
}
} else if (size == frames * channels) { // all time frames
if (z >= startSlice && z <= stopSlice) roi.setPosition(c, 1, t);
else if (z == 0) roi.setPosition(c, 0, t);
else continue;
overlay2.add(roi);
}
}
return overlay2;
}
void invert(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null || !roi.isArea()) {
IJ.error("Inverse", "Area selection required");
return;
}
ShapeRoi s1, s2;
if (roi instanceof ShapeRoi) s1 = (ShapeRoi) roi;
else s1 = new ShapeRoi(roi);
s2 = new ShapeRoi(new Roi(0, 0, imp.getWidth(), imp.getHeight()));
imp.setRoi(s1.xor(s2));
}
void toBoundingBox(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null) {
noRoi("To Bounding Box");
return;
}
Undo.setup(Undo.ROI, imp);
Rectangle r = roi.getBounds();
imp.deleteRoi();
Roi roi2 = new Roi(r.x, r.y, r.width, r.height);
transferProperties(roi, roi2);
imp.setRoi(roi2);
}
void lineWidth() {
int width = (int) IJ.getNumber("Line Width:", Line.getWidth());
if (width == IJ.CANCELED) return;
Line.setWidth(width);
LineWidthAdjuster.update();
ImagePlus imp = WindowManager.getCurrentImage();
if (imp != null && imp.isProcessor()) {
ImageProcessor ip = imp.getProcessor();
ip.setLineWidth(Line.getWidth());
Roi roi = imp.getRoi();
if (roi != null && roi.isLine()) imp.draw();
}
}
void convexHull(ImagePlus imp) {
Roi roi = imp.getRoi();
int type = roi != null ? roi.getType() : -1;
if (!(type == Roi.FREEROI
|| type == Roi.TRACED_ROI
|| type == Roi.POLYGON
|| type == Roi.POINT)) {
IJ.error("Convex Hull", "Polygonal or point selection required");
return;
}
if (roi instanceof EllipseRoi) return;
Polygon p = roi.getConvexHull();
if (p != null) imp.setRoi(new PolygonRoi(p.xpoints, p.ypoints, p.npoints, roi.POLYGON));
}
// Added by Marcel Boeglin 2013.09.23
private Overlay projectStackRois(Overlay overlay) {
if (overlay == null) return null;
Overlay overlay2 = new Overlay();
Roi roi;
int s;
for (Roi r : overlay.toArray()) {
s = r.getPosition();
roi = (Roi) r.clone();
if (s >= startSlice && s <= stopSlice || s == 0) {
roi.setPosition(s);
overlay2.add(roi);
}
}
return overlay2;
}
void areaToLine(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null || !roi.isArea()) {
IJ.error("Area to Line", "Area selection required");
return;
}
Polygon p = roi.getPolygon();
if (p == null) return;
int type1 = roi.getType();
if (type1 == Roi.COMPOSITE) {
IJ.error("Area to Line", "Composite selections cannot be converted to lines.");
return;
}
int type2 = Roi.POLYLINE;
if (type1 == Roi.OVAL
|| type1 == Roi.FREEROI
|| type1 == Roi.TRACED_ROI
|| ((roi instanceof PolygonRoi) && ((PolygonRoi) roi).isSplineFit())) type2 = Roi.FREELINE;
Roi roi2 = new PolygonRoi(p.xpoints, p.ypoints, p.npoints, type2);
imp.setRoi(roi2);
}
boolean setProperties(String title, Roi roi) {
Frame f = WindowManager.getFrontWindow();
if (f != null && f.getTitle().indexOf("3D Viewer") != -1) return false;
if (roi == null) {
IJ.error("This command requires a selection.");
return false;
}
RoiProperties rp = new RoiProperties(title, roi);
boolean ok = rp.showDialog();
if (IJ.debugMode) IJ.log(roi.getDebugInfo());
return ok;
}
void createMask(ImagePlus imp) {
Roi roi = imp.getRoi();
boolean useInvertingLut = Prefs.useInvertingLut;
Prefs.useInvertingLut = false;
boolean selectAll =
roi != null
&& roi.getType() == Roi.RECTANGLE
&& roi.getBounds().width == imp.getWidth()
&& roi.getBounds().height == imp.getHeight()
&& imp.isThreshold();
if (roi == null || !(roi.isArea() || roi.getType() == Roi.POINT) || selectAll) {
createMaskFromThreshold(imp);
Prefs.useInvertingLut = useInvertingLut;
return;
}
ImagePlus maskImp = null;
Frame frame = WindowManager.getFrame("Mask");
if (frame != null && (frame instanceof ImageWindow))
maskImp = ((ImageWindow) frame).getImagePlus();
if (maskImp == null) {
ImageProcessor ip = new ByteProcessor(imp.getWidth(), imp.getHeight());
if (!Prefs.blackBackground) ip.invertLut();
maskImp = new ImagePlus("Mask", ip);
maskImp.show();
}
ImageProcessor ip = maskImp.getProcessor();
ip.setRoi(roi);
ip.setValue(255);
ip.fill(ip.getMask());
Calibration cal = imp.getCalibration();
if (cal.scaled()) {
Calibration cal2 = maskImp.getCalibration();
cal2.pixelWidth = cal.pixelWidth;
cal2.pixelHeight = cal.pixelHeight;
cal2.setUnit(cal.getUnit());
}
maskImp.updateAndRepaintWindow();
Prefs.useInvertingLut = useInvertingLut;
}
void runMacro(String arg, ImagePlus imp) {
boolean rotate = arg.equals("rotate");
Roi roi = imp.getRoi();
if (rotate && IJ.macroRunning()) {
String options = Macro.getOptions();
if (options != null
&& (options.indexOf("grid=") != -1 || options.indexOf("interpolat") != -1)) {
IJ.run("Rotate... ", options); // run Image>Transform>Rotate
return;
}
}
if (roi == null) {
noRoi(rotate ? "Rotate" : "Enlarge");
return;
}
double dangle = Tools.parseDouble(angle);
if (Double.isNaN(dangle)) {
dangle = 15;
angle = "" + dangle;
}
if (rotate && (roi instanceof ImageRoi)) {
dangle = IJ.getNumber("Angle (degrees):", dangle);
((ImageRoi) roi).rotate(dangle);
imp.draw();
angle = "" + dangle;
return;
}
Undo.setup(Undo.ROI, imp);
roi = (Roi) roi.clone();
if (rotate) {
String value = IJ.runMacroFile("ij.jar:RotateSelection", angle);
Roi roi2 = imp.getRoi();
transferProperties(roi, roi2);
imp.setRoi(roi2);
if (value != null) angle = value;
} else if (arg.equals("enlarge")) (new RoiEnlarger()).run("");
}
void convexHull(ImagePlus imp) {
Roi roi = imp.getRoi();
int type = roi != null ? roi.getType() : -1;
if (!(type == Roi.FREEROI
|| type == Roi.TRACED_ROI
|| type == Roi.POLYGON
|| type == Roi.POINT)) {
IJ.error("Convex Hull", "Polygonal or point selection required");
return;
}
if (roi instanceof EllipseRoi) return;
// if (roi.subPixelResolution() && roi instanceof PolygonRoi) {
// FloatPolygon p = ((PolygonRoi)roi).getFloatConvexHull();
// if (p!=null)
// imp.setRoi(new PolygonRoi(p.xpoints, p.ypoints, p.npoints, roi.POLYGON));
// } else {
Polygon p = roi.getConvexHull();
if (p != null) {
Undo.setup(Undo.ROI, imp);
Roi roi2 = new PolygonRoi(p.xpoints, p.ypoints, p.npoints, roi.POLYGON);
transferProperties(roi, roi2);
imp.setRoi(roi2);
}
}
void lineToArea(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null || !roi.isLine()) {
IJ.error("Line to Area", "Line selection required");
return;
}
ImageProcessor ip2 = new ByteProcessor(imp.getWidth(), imp.getHeight());
ip2.setColor(255);
if (roi.getType() == Roi.LINE && roi.getStrokeWidth() > 1) ip2.fillPolygon(roi.getPolygon());
else roi.drawPixels(ip2);
// new ImagePlus("ip2", ip2.duplicate()).show();
ip2.setThreshold(255, 255, ImageProcessor.NO_LUT_UPDATE);
ThresholdToSelection tts = new ThresholdToSelection();
Roi roi2 = tts.convert(ip2);
imp.setRoi(roi2);
Roi.previousRoi = (Roi) roi.clone();
}
// Added by Marcel Boeglin 2013.09.22
private Overlay projectRGBHyperStackRois(Overlay overlay) {
if (overlay == null) return null;
int frames = projImage.getNFrames();
int t1 = imp.getFrame();
Overlay overlay2 = new Overlay();
Roi roi;
int c, z, t;
for (Roi r : overlay.toArray()) {
c = r.getCPosition();
z = r.getZPosition();
t = r.getTPosition();
roi = (Roi) r.clone();
if (z >= startSlice && z <= stopSlice || z == 0 || c == 0 || t == 0) {
if (frames == 1 && t != t1 && t != 0) // current time frame
continue;
roi.setPosition(t);
overlay2.add(roi);
}
}
return overlay2;
}
/*
if selection is closed shape, create a circle with the same area and centroid, otherwise use<br>
the Pratt method to fit a circle to the points that define the line or multi-point selection.<br>
Reference: Pratt V., Direct least-squares fitting of algebraic surfaces", Computer Graphics, Vol. 21, pages 145-152 (1987).<br>
Original code: Nikolai Chernov's MATLAB script for Newton-based Pratt fit.<br>
(http://www.math.uab.edu/~chernov/cl/MATLABcircle.html)<br>
Java version: https://github.com/mdoube/BoneJ/blob/master/src/org/doube/geometry/FitCircle.java<br>
@authors Nikolai Chernov, Michael Doube, Ved Sharma
*/
void fitCircle(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null) {
noRoi("Fit Circle");
return;
}
if (roi.isArea()) { // create circle with the same area and centroid
ImageProcessor ip = imp.getProcessor();
ip.setRoi(roi);
ImageStatistics stats =
ImageStatistics.getStatistics(ip, Measurements.AREA + Measurements.CENTROID, null);
double r = Math.sqrt(stats.pixelCount / Math.PI);
imp.killRoi();
int d = (int) Math.round(2.0 * r);
IJ.makeOval(
(int) Math.round(stats.xCentroid - r), (int) Math.round(stats.yCentroid - r), d, d);
return;
}
Polygon poly = roi.getPolygon();
int n = poly.npoints;
int[] x = poly.xpoints;
int[] y = poly.ypoints;
if (n < 3) {
IJ.error("Fit Circle", "At least 3 points are required to fit a circle.");
return;
}
// calculate point centroid
double sumx = 0, sumy = 0;
for (int i = 0; i < n; i++) {
sumx = sumx + poly.xpoints[i];
sumy = sumy + poly.ypoints[i];
}
double meanx = sumx / n;
double meany = sumy / n;
// calculate moments
double[] X = new double[n], Y = new double[n];
double Mxx = 0, Myy = 0, Mxy = 0, Mxz = 0, Myz = 0, Mzz = 0;
for (int i = 0; i < n; i++) {
X[i] = x[i] - meanx;
Y[i] = y[i] - meany;
double Zi = X[i] * X[i] + Y[i] * Y[i];
Mxy = Mxy + X[i] * Y[i];
Mxx = Mxx + X[i] * X[i];
Myy = Myy + Y[i] * Y[i];
Mxz = Mxz + X[i] * Zi;
Myz = Myz + Y[i] * Zi;
Mzz = Mzz + Zi * Zi;
}
Mxx = Mxx / n;
Myy = Myy / n;
Mxy = Mxy / n;
Mxz = Mxz / n;
Myz = Myz / n;
Mzz = Mzz / n;
// calculate the coefficients of the characteristic polynomial
double Mz = Mxx + Myy;
double Cov_xy = Mxx * Myy - Mxy * Mxy;
double Mxz2 = Mxz * Mxz;
double Myz2 = Myz * Myz;
double A2 = 4 * Cov_xy - 3 * Mz * Mz - Mzz;
double A1 = Mzz * Mz + 4 * Cov_xy * Mz - Mxz2 - Myz2 - Mz * Mz * Mz;
double A0 = Mxz2 * Myy + Myz2 * Mxx - Mzz * Cov_xy - 2 * Mxz * Myz * Mxy + Mz * Mz * Cov_xy;
double A22 = A2 + A2;
double epsilon = 1e-12;
double ynew = 1e+20;
int IterMax = 20;
double xnew = 0;
int iterations = 0;
// Newton's method starting at x=0
for (int iter = 1; iter <= IterMax; iter++) {
iterations = iter;
double yold = ynew;
ynew = A0 + xnew * (A1 + xnew * (A2 + 4. * xnew * xnew));
if (Math.abs(ynew) > Math.abs(yold)) {
if (IJ.debugMode) IJ.log("Fit Circle: wrong direction: |ynew| > |yold|");
xnew = 0;
break;
}
double Dy = A1 + xnew * (A22 + 16 * xnew * xnew);
double xold = xnew;
xnew = xold - ynew / Dy;
if (Math.abs((xnew - xold) / xnew) < epsilon) break;
if (iter >= IterMax) {
if (IJ.debugMode) IJ.log("Fit Circle: will not converge");
xnew = 0;
}
if (xnew < 0) {
if (IJ.debugMode) IJ.log("Fit Circle: negative root: x = " + xnew);
xnew = 0;
}
}
if (IJ.debugMode)
IJ.log("Fit Circle: n=" + n + ", xnew=" + IJ.d2s(xnew, 2) + ", iterations=" + iterations);
// calculate the circle parameters
double DET = xnew * xnew - xnew * Mz + Cov_xy;
double CenterX = (Mxz * (Myy - xnew) - Myz * Mxy) / (2 * DET);
double CenterY = (Myz * (Mxx - xnew) - Mxz * Mxy) / (2 * DET);
double radius = Math.sqrt(CenterX * CenterX + CenterY * CenterY + Mz + 2 * xnew);
if (Double.isNaN(radius)) {
IJ.error("Fit Circle", "Points are collinear.");
return;
}
CenterX = CenterX + meanx;
CenterY = CenterY + meany;
imp.killRoi();
IJ.makeOval(
(int) Math.round(CenterX - radius),
(int) Math.round(CenterY - radius),
(int) Math.round(2 * radius),
(int) Math.round(2 * radius));
}
private void makeBand(ImagePlus imp) {
Roi roi = imp.getRoi();
if (roi == null) {
noRoi("Make Band");
return;
}
if (!roi.isArea()) {
IJ.error("Make Band", "Area selection required");
return;
}
Calibration cal = imp.getCalibration();
double pixels = bandSize;
double size = pixels * cal.pixelWidth;
int decimalPlaces = 0;
if ((int) size != size) decimalPlaces = 2;
GenericDialog gd = new GenericDialog("Make Band");
gd.addNumericField("Band Size:", size, decimalPlaces, 4, cal.getUnits());
gd.showDialog();
if (gd.wasCanceled()) return;
size = gd.getNextNumber();
if (Double.isNaN(size)) {
IJ.error("Make Band", "invalid number");
return;
}
int n = (int) Math.round(size / cal.pixelWidth);
if (n > 255) {
IJ.error("Make Band", "Cannot make bands wider that 255 pixels");
return;
}
int width = imp.getWidth();
int height = imp.getHeight();
Rectangle r = roi.getBounds();
ImageProcessor ip = roi.getMask();
if (ip == null) {
ip = new ByteProcessor(r.width, r.height);
ip.invert();
}
ImageProcessor mask = new ByteProcessor(width, height);
mask.insert(ip, r.x, r.y);
ImagePlus edm = new ImagePlus("mask", mask);
boolean saveBlackBackground = Prefs.blackBackground;
Prefs.blackBackground = false;
IJ.run(edm, "Distance Map", "");
Prefs.blackBackground = saveBlackBackground;
ip = edm.getProcessor();
ip.setThreshold(0, n, ImageProcessor.NO_LUT_UPDATE);
int xx = -1, yy = -1;
for (int x = r.x; x < r.x + r.width; x++) {
for (int y = r.y; y < r.y + r.height; y++) {
if (ip.getPixel(x, y) < n) {
xx = x;
yy = y;
break;
}
}
if (xx >= 0 || yy >= 0) break;
}
int count = IJ.doWand(edm, xx, yy, 0, null);
if (count <= 0) {
IJ.error("Make Band", "Unable to make band");
return;
}
ShapeRoi roi2 = new ShapeRoi(edm.getRoi());
if (!(roi instanceof ShapeRoi)) roi = new ShapeRoi(roi);
ShapeRoi roi1 = (ShapeRoi) roi;
roi2 = roi2.not(roi1);
imp.setRoi(roi2);
bandSize = n;
}
void Otsu(ImagePlus imp, int radius, double par1, double par2, boolean doIwhite) {
// Otsu's threshold algorithm
// C++ code by Jordan Bevik <*****@*****.**>
// ported to ImageJ plugin by G.Landini. Same algorithm as in Auto_Threshold, this time on local
// circular regions
int[] data;
int w = imp.getWidth();
int h = imp.getHeight();
int position;
int radiusx2 = radius * 2;
ImageProcessor ip = imp.getProcessor();
byte[] pixels = (byte[]) ip.getPixels();
byte[] pixelsOut =
new byte
[pixels.length]; // need this to avoid changing the image data (and further histograms)
byte object;
byte backg;
if (doIwhite) {
object = (byte) 0xff;
backg = (byte) 0;
} else {
object = (byte) 0;
backg = (byte) 0xff;
}
int k, kStar; // k = the current threshold; kStar = optimal threshold
int N1, N; // N1 = # points with intensity <=k; N = total number of points
double BCV, BCVmax; // The current Between Class Variance and maximum BCV
double num, denom; // temporary bookeeping
int Sk; // The total intensity for all histogram points <=k
int S,
L =
256; // The total intensity of the image. Need to hange here if modifying for >8 bits
// images
int roiy;
Roi roi = new OvalRoi(0, 0, radiusx2, radiusx2);
// ip.setRoi(roi);
for (int y = 0; y < h; y++) {
IJ.showProgress(
(double) (y) / (h - 1)); // this method is slow, so let's show the progress bar
roiy = y - radius;
for (int x = 0; x < w; x++) {
roi.setLocation(x - radius, roiy);
ip.setRoi(roi);
// ip.setRoi(new OvalRoi(x-radius, roiy, radiusx2, radiusx2));
position = x + y * w;
data = ip.getHistogram();
// Initialize values:
S = N = 0;
for (k = 0; k < L; k++) {
S += k * data[k]; // Total histogram intensity
N += data[k]; // Total number of data points
}
Sk = 0;
N1 = data[0]; // The entry for zero intensity
BCV = 0;
BCVmax = 0;
kStar = 0;
// Look at each possible threshold value,
// calculate the between-class variance, and decide if it's a max
for (k = 1; k < L - 1; k++) { // No need to check endpoints k = 0 or k = L-1
Sk += k * data[k];
N1 += data[k];
// The float casting here is to avoid compiler warning about loss of precision and
// will prevent overflow in the case of large saturated images
denom = (double) (N1) * (N - N1); // Maximum value of denom is (N^2)/4 = approx. 3E10
if (denom != 0) {
// Float here is to avoid loss of precision when dividing
num = ((double) N1 / N) * S - Sk; // Maximum value of num = 255*N = approx 8E7
BCV = (num * num) / denom;
} else BCV = 0;
if (BCV >= BCVmax) { // Assign the best threshold found so far
BCVmax = BCV;
kStar = k;
}
}
// kStar += 1; // Use QTI convention that intensity -> 1 if intensity >= k
// (the algorithm was developed for I-> 1 if I <= k.)
// return kStar;
pixelsOut[position] = ((int) (pixels[position] & 0xff) > kStar) ? object : backg;
}
}
for (position = 0; position < w * h; position++)
pixels[position] = pixelsOut[position]; // update with thresholded pixels
}
void interpolate() {
Roi roi = imp.getRoi();
if (roi == null) {
noRoi("Interpolate");
return;
}
if (roi.getType() == Roi.POINT) return;
if (IJ.isMacro() && Macro.getOptions() == null) Macro.setOptions("interval=1");
GenericDialog gd = new GenericDialog("Interpolate");
gd.addNumericField("Interval:", 1.0, 1, 4, "pixel");
gd.addCheckbox("Smooth", IJ.isMacro() ? false : smooth);
gd.addCheckbox("Adjust interval to match", IJ.isMacro() ? false : adjust);
gd.showDialog();
if (gd.wasCanceled()) return;
double interval = gd.getNextNumber();
smooth = gd.getNextBoolean();
Undo.setup(Undo.ROI, imp);
adjust = gd.getNextBoolean();
int sign = adjust ? -1 : 1;
FloatPolygon poly = roi.getInterpolatedPolygon(sign * interval, smooth);
int t = roi.getType();
int type = roi.isLine() ? Roi.FREELINE : Roi.FREEROI;
if (t == Roi.POLYGON && interval > 1.0) type = Roi.POLYGON;
if ((t == Roi.RECTANGLE || t == Roi.OVAL || t == Roi.FREEROI) && interval >= 8.0)
type = Roi.POLYGON;
if ((t == Roi.LINE || t == Roi.FREELINE) && interval >= 8.0) type = Roi.POLYLINE;
if (t == Roi.POLYLINE && interval >= 8.0) type = Roi.POLYLINE;
ImageCanvas ic = imp.getCanvas();
if (poly.npoints <= 150 && ic != null && ic.getMagnification() >= 12.0)
type = roi.isLine() ? Roi.POLYLINE : Roi.POLYGON;
Roi p = new PolygonRoi(poly, type);
if (roi.getStroke() != null) p.setStrokeWidth(roi.getStrokeWidth());
p.setStrokeColor(roi.getStrokeColor());
p.setName(roi.getName());
transferProperties(roi, p);
imp.setRoi(p);
}
private void transferProperties(Roi roi1, Roi roi2) {
if (roi1 == null || roi2 == null) return;
roi2.setStrokeColor(roi1.getStrokeColor());
if (roi1.getStroke() != null) roi2.setStroke(roi1.getStroke());
roi2.setDrawOffset(roi1.getDrawOffset());
}
public void keyPressed(KeyEvent e) {
// if (e.isConsumed()) return;
int keyCode = e.getKeyCode();
IJ.setKeyDown(keyCode);
hotkey = false;
if (keyCode == KeyEvent.VK_CONTROL || keyCode == KeyEvent.VK_SHIFT) return;
char keyChar = e.getKeyChar();
int flags = e.getModifiers();
if (IJ.debugMode)
IJ.log(
"keyPressed: code="
+ keyCode
+ " ("
+ KeyEvent.getKeyText(keyCode)
+ "), char=\""
+ keyChar
+ "\" ("
+ (int) keyChar
+ "), flags="
+ KeyEvent.getKeyModifiersText(flags));
boolean shift = (flags & KeyEvent.SHIFT_MASK) != 0;
boolean control = (flags & KeyEvent.CTRL_MASK) != 0;
boolean alt = (flags & KeyEvent.ALT_MASK) != 0;
boolean meta = (flags & KeyEvent.META_MASK) != 0;
String cmd = null;
ImagePlus imp = WindowManager.getCurrentImage();
boolean isStack = (imp != null) && (imp.getStackSize() > 1);
if (imp != null
&& !control
&& ((keyChar >= 32 && keyChar <= 255) || keyChar == '\b' || keyChar == '\n')) {
Roi roi = imp.getRoi();
if (roi instanceof TextRoi) {
if ((flags & KeyEvent.META_MASK) != 0 && IJ.isMacOSX()) return;
if (alt) {
switch (keyChar) {
case 'u':
case 'm':
keyChar = IJ.micronSymbol;
break;
case 'A':
keyChar = IJ.angstromSymbol;
break;
default:
}
}
((TextRoi) roi).addChar(keyChar);
return;
}
}
// Handle one character macro shortcuts
if (!control && !meta) {
Hashtable macroShortcuts = Menus.getMacroShortcuts();
if (macroShortcuts.size() > 0) {
if (shift) cmd = (String) macroShortcuts.get(new Integer(keyCode + 200));
else cmd = (String) macroShortcuts.get(new Integer(keyCode));
if (cmd != null) {
// MacroInstaller.runMacroCommand(cmd);
commandName = cmd;
MacroInstaller.runMacroShortcut(cmd);
return;
}
}
}
if ((!Prefs.requireControlKey || control || meta) && keyChar != '+') {
Hashtable shortcuts = Menus.getShortcuts();
if (shift) cmd = (String) shortcuts.get(new Integer(keyCode + 200));
else cmd = (String) shortcuts.get(new Integer(keyCode));
}
if (cmd == null) {
switch (keyChar) {
case '<':
case ',':
if (isStack) cmd = "Previous Slice [<]";
break;
case '>':
case '.':
case ';':
if (isStack) cmd = "Next Slice [>]";
break;
case '+':
case '=':
cmd = "In [+]";
break;
case '-':
cmd = "Out [-]";
break;
case '/':
cmd = "Reslice [/]...";
break;
default:
}
}
if (cmd == null) {
switch (keyCode) {
case KeyEvent.VK_TAB:
WindowManager.putBehind();
return;
case KeyEvent.VK_BACK_SPACE: // delete
if (deleteOverlayRoi(imp)) return;
cmd = "Clear";
hotkey = true;
break;
// case KeyEvent.VK_BACK_SLASH: cmd=IJ.altKeyDown()?"Animation Options...":"Start
// Animation"; break;
case KeyEvent.VK_EQUALS:
cmd = "In [+]";
break;
case KeyEvent.VK_MINUS:
cmd = "Out [-]";
break;
case KeyEvent.VK_SLASH:
case 0xbf:
cmd = "Reslice [/]...";
break;
case KeyEvent.VK_COMMA:
case 0xbc:
if (isStack) cmd = "Previous Slice [<]";
break;
case KeyEvent.VK_PERIOD:
case 0xbe:
if (isStack) cmd = "Next Slice [>]";
break;
case KeyEvent.VK_LEFT:
case KeyEvent.VK_RIGHT:
case KeyEvent.VK_UP:
case KeyEvent.VK_DOWN: // arrow keys
if (imp == null) return;
Roi roi = imp.getRoi();
if (IJ.shiftKeyDown() && imp == Orthogonal_Views.getImage()) return;
boolean stackKey = imp.getStackSize() > 1 && (roi == null || IJ.shiftKeyDown());
boolean zoomKey = roi == null || IJ.shiftKeyDown() || IJ.controlKeyDown();
if (stackKey && keyCode == KeyEvent.VK_RIGHT) cmd = "Next Slice [>]";
else if (stackKey && keyCode == KeyEvent.VK_LEFT) cmd = "Previous Slice [<]";
else if (zoomKey
&& keyCode == KeyEvent.VK_DOWN
&& !ignoreArrowKeys(imp)
&& Toolbar.getToolId() < Toolbar.SPARE6) cmd = "Out [-]";
else if (zoomKey
&& keyCode == KeyEvent.VK_UP
&& !ignoreArrowKeys(imp)
&& Toolbar.getToolId() < Toolbar.SPARE6) cmd = "In [+]";
else if (roi != null) {
if ((flags & KeyEvent.ALT_MASK) != 0) roi.nudgeCorner(keyCode);
else roi.nudge(keyCode);
return;
}
break;
case KeyEvent.VK_ESCAPE:
abortPluginOrMacro(imp);
return;
case KeyEvent.VK_ENTER:
WindowManager.toFront(this);
return;
default:
break;
}
}
if (cmd != null && !cmd.equals("")) {
commandName = cmd;
if (cmd.equals("Fill") || cmd.equals("Draw")) hotkey = true;
if (cmd.charAt(0) == MacroInstaller.commandPrefix) MacroInstaller.runMacroShortcut(cmd);
else {
doCommand(cmd);
keyPressedTime = System.currentTimeMillis();
lastKeyCommand = cmd;
}
}
}