Using Spatial Transformer Layer[1] with keras (theano backend). The file 'SpatialTransformer.py' is originally from skaae's Lasagne version[2].

You can find a simple example in the notebook file.

[1] Jaderberg, Max, et al. "Spatial Transformer Networks." arXiv preprint arXiv:1506.02025 (2015).

[2] https://github.com/skaae/transformer_network