DefaultDatasetService errors when handling an ImgLabeling

[gselzer]

The error can be reproduced by running the following script (I ran it in the Script Editor):

#@ OpService ops
#@ Img inputData
#@OUTPUT net.imglib2.roi.labeling.ImgLabeling labeling

from net.imglib2.algorithm.labeling.ConnectedComponents import StructuringElement
from net.imglib2.roi.labeling import ImgLabeling;

# otsu threshold and display
thresholded = ops.threshold().otsu(inputData)

# call connected components to label each connected region
labeling = ops.labeling().cca(thresholded, StructuringElement.FOUR_CONNECTED)

[imagejan]

Related: #28