/**
  * Returns an ImageProcessor for the specified slice, were 1<=n<=nslices. Returns null if the
  * stack is empty.
  */
 public ImageProcessor getProcessor(int n) {
   ImageProcessor ip;
   if (n < 1 || n > nSlices) throw new IllegalArgumentException(outOfRange + n);
   if (nSlices == 0) return null;
   if (stack[0] == null) throw new IllegalArgumentException("Pixel array is null");
   if (stack[0] instanceof byte[]) ip = new ByteProcessor(width, height, null, cm);
   else if (stack[0] instanceof short[]) ip = new ShortProcessor(width, height, null, cm);
   else if (stack[0] instanceof int[]) ip = new ColorProcessor(width, height, null);
   else if (stack[0] instanceof float[]) ip = new FloatProcessor(width, height, null, cm);
   else throw new IllegalArgumentException("Unknown stack type");
   ip.setPixels(stack[n - 1]);
   if (min != Double.MAX_VALUE && ip != null && !(ip instanceof ColorProcessor))
     ip.setMinAndMax(min, max);
   if (cTable != null) ip.setCalibrationTable(cTable);
   return ip;
 }
Esempio n. 2
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  void setCalibration(ImagePlus imp) {
    if (fi.fileType == FileInfo.GRAY16_SIGNED) {
      if (IJ.debugMode) IJ.log("16-bit signed");
      double[] coeff = new double[2];
      coeff[0] = -32768.0;
      coeff[1] = 1.0;
      imp.getLocalCalibration().setFunction(Calibration.STRAIGHT_LINE, coeff, "gray value");
    }

    Properties props = decodeDescriptionString(fi);
    Calibration cal = imp.getCalibration();
    boolean calibrated = false;
    if (fi.pixelWidth > 0.0 && fi.unit != null) {
      cal.pixelWidth = fi.pixelWidth;
      cal.pixelHeight = fi.pixelHeight;
      cal.pixelDepth = fi.pixelDepth;
      cal.setUnit(fi.unit);
      calibrated = true;
    }

    if (fi.valueUnit != null) {
      int f = fi.calibrationFunction;
      if ((f >= Calibration.STRAIGHT_LINE && f <= Calibration.RODBARD2 && fi.coefficients != null)
          || f == Calibration.UNCALIBRATED_OD) {
        boolean zeroClip = props != null && props.getProperty("zeroclip", "false").equals("true");
        cal.setFunction(f, fi.coefficients, fi.valueUnit, zeroClip);
        calibrated = true;
      }
    }

    if (calibrated) checkForCalibrationConflict(imp, cal);

    if (fi.frameInterval != 0.0) cal.frameInterval = fi.frameInterval;

    if (props == null) return;

    cal.xOrigin = getDouble(props, "xorigin");
    cal.yOrigin = getDouble(props, "yorigin");
    cal.zOrigin = getDouble(props, "zorigin");
    cal.info = props.getProperty("info");

    cal.fps = getDouble(props, "fps");
    cal.loop = getBoolean(props, "loop");
    cal.frameInterval = getDouble(props, "finterval");
    cal.setTimeUnit(props.getProperty("tunit", "sec"));

    double displayMin = getDouble(props, "min");
    double displayMax = getDouble(props, "max");
    if (!(displayMin == 0.0 && displayMax == 0.0)) {
      int type = imp.getType();
      ImageProcessor ip = imp.getProcessor();
      if (type == ImagePlus.GRAY8 || type == ImagePlus.COLOR_256)
        ip.setMinAndMax(displayMin, displayMax);
      else if (type == ImagePlus.GRAY16 || type == ImagePlus.GRAY32) {
        if (ip.getMin() != displayMin || ip.getMax() != displayMax)
          ip.setMinAndMax(displayMin, displayMax);
      }
    }

    int stackSize = imp.getStackSize();
    if (stackSize > 1) {
      int channels = (int) getDouble(props, "channels");
      int slices = (int) getDouble(props, "slices");
      int frames = (int) getDouble(props, "frames");
      if (channels == 0) channels = 1;
      if (slices == 0) slices = 1;
      if (frames == 0) frames = 1;
      // IJ.log("setCalibration: "+channels+"  "+slices+"  "+frames);
      if (channels * slices * frames == stackSize) {
        imp.setDimensions(channels, slices, frames);
        if (getBoolean(props, "hyperstack")) imp.setOpenAsHyperStack(true);
      }
    }
  }