When attempting to run the IQR playground on a batch of images, the train_itq step fails at [this line](https://github.com/Kitware/SMQTK/blob/master/python/smqtk/algorithms/nn_index/lsh/functors/itq.py#L320), probably due to the test [here](https://github.com/Kitware/SMQTK/blob/master/python/smqtk/algorithms/nn_index/lsh/functors/itq.py#L312).
When attempting to run the IQR playground on a batch of images, the train_itq step fails at this line, probably due to the test here.