Ejemplo n.º 1
0
  /**
   * Get the logged image value.
   *
   * @param bean
   * @return a dataset that can be absolute, if complex, and also be logged according to bean
   *     Package private for testing
   */
  /* package */ Dataset getImageLoggedDataCalc(ImageServiceBean bean) {
    Dataset ret = DatasetUtils.convertToDataset(bean.getImage());

    if (ret.isComplex()) {
      ret = Maths.abs(ret);
    }
    if (bean.isLogColorScale()) {
      double offset = bean.getLogOffset();
      if (!Double.isNaN(offset) && !Double.isInfinite(offset)) {
        ret = Maths.subtract(ret, offset);
      }
      ret = Maths.log10(ret);
    }
    return ret;
  }
Ejemplo n.º 2
0
  /**
   * getImageData(...) provides an image in a given palette data and origin. Faster than getting a
   * resolved image
   *
   * <p>This method should be thread safe.
   */
  public ImageData getImageData(ImageServiceBean bean) {
    ImageOrigin origin = bean.getOrigin();
    if (origin == null) origin = ImageOrigin.TOP_LEFT;

    // orientate the image
    Dataset oImage =
        DatasetUtils.rotate90(DatasetUtils.convertToDataset(bean.getImage()), origin.ordinal());
    Dataset image = oImage;

    if (image instanceof RGBDataset) {
      return SWTImageUtils.createImageData(
          (RGBDataset) image, 0, 255, null, null, null, false, false, false);
    }

    createMaxMin(bean);
    double max = getMax(bean);
    double min = getMin(bean);

    double maxCut = getMaxCut(bean);
    double minCut = getMinCut(bean);

    // now deal with the log if needed
    if (bean.isLogColorScale()) {
      image = DatasetUtils.rotate90(getImageLoggedData(bean), origin.ordinal());
      max = Math.log10(max);
      // note createMaxMin() -> getFastStatistics() -> getImageLogged() which ensures min >= 0
      min = Math.log10(min);
      maxCut = Math.log10(maxCut);
      // no guarantees for minCut though
      minCut = minCut <= 0 ? Double.NEGATIVE_INFINITY : Math.log10(minCut);
    }

    if (oImage.isComplex()) { // handle complex datasets by creating RGB dataset
      Dataset hue = Maths.angle(oImage, true);
      Dataset value = DatasetUtils.rotate90(getImageLoggedData(bean), origin.ordinal());
      double maxmax = Math.max(Math.abs(max), Math.abs(min));
      if (max - min > Math.ulp(maxmax)) {
        value.isubtract(min);
        value.imultiply(1. / (max - min));
      } else {
        value.imultiply(1. / maxmax);
      }
      image = RGBDataset.createFromHSV(hue, null, value);
      return SWTImageUtils.createImageData(image, 0, 255, null, null, null, false, false, false);
    }

    if (bean.getFunctionObject() != null && bean.getFunctionObject() instanceof FunctionContainer) {
      final FunctionContainer fc = (FunctionContainer) bean.getFunctionObject();
      // TODO This does not support masking or cut bounds for zingers and dead pixels.
      return SWTImageUtils.createImageData(
          image,
          min,
          max,
          fc.getRedFunc(),
          fc.getGreenFunc(),
          fc.getBlueFunc(),
          fc.isInverseRed(),
          fc.isInverseGreen(),
          fc.isInverseBlue());
    }

    return SWTImageUtils.createImageData(min, max, minCut, maxCut, image, bean);
  }