/**
* 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;
}
/**
* 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);
}