/**
* Makes a color {@link Dataset} from an {@link ImagePlus}. Color Datasets have isRgbMerged()
* true, channels == 3, and bitsperPixel == 8. Does not populate the data of the returned Dataset.
* That is left to other utility methods. Does not set metadata of Dataset. Throws exceptions if
* input ImagePlus is not single channel RGB.
*/
private Dataset makeColorDataset(final ImagePlus imp, final AxisType[] preferredOrder) {
final int x = imp.getWidth();
final int y = imp.getHeight();
final int c = imp.getNChannels();
final int z = imp.getNSlices();
final int t = imp.getNFrames();
if (imp.getType() != ImagePlus.COLOR_RGB) {
throw new IllegalArgumentException("can't make a color Dataset from a nonRGB ImagePlus");
}
if (c != 1) {
throw new IllegalArgumentException(
"can't make a color Dataset from a multichannel ColorProcessor stack");
}
final int[] inputDims = new int[] {x, y, 3, z, t};
final AxisType[] axes = LegacyUtils.orderedAxes(preferredOrder, inputDims);
final long[] dims = LegacyUtils.orderedDims(axes, inputDims);
final String name = imp.getTitle();
final int bitsPerPixel = 8;
final boolean signed = false;
final boolean floating = false;
final boolean virtual = imp.getStack().isVirtual();
final Dataset ds =
datasetService.create(dims, name, axes, bitsPerPixel, signed, floating, virtual);
ds.setRGBMerged(true);
DatasetUtils.initColorTables(ds);
return ds;
}
@Override
public Dataset createDataset(final String title, final ColorTable colorTable) {
final Dataset dataset =
datasetService.create(
new UnsignedByteType(),
new long[] {RAMP_WIDTH, RAMP_HEIGHT},
title,
new AxisType[] {Axes.X, Axes.Y});
rampFill(dataset);
// TODO - is this papering over a bug in the dataset/imgplus code?
if (dataset.getColorTableCount() == 0) dataset.initializeColorTables(1);
dataset.setColorTable(colorTable, 0);
return dataset;
}
public static Dataset makeDataset(final Context context, final byte[][] data, final String name) {
final int w = data.length;
final int h = data[0].length;
final ArrayImg<ByteType, ByteArray> img =
new ArrayImgFactory<ByteType>().createByteInstance(new long[] {w, h}, 1);
final ByteType t = new ByteType(img);
img.setLinkedType(t);
final RandomAccess<ByteType> ra = img.randomAccess();
for (int i = 0; i < w; i++) {
ra.setPosition(i, 0);
for (int j = 0; j < h; j++) {
ra.setPosition(j, 1);
ra.get().set(data[i][j]);
}
}
final DatasetService datasetService = context.getService(DatasetService.class);
return datasetService.create(new ImgPlus<ByteType>(img, name, new AxisType[] {Axes.X, Axes.Y}));
}