3d sliding window operation in Theano?
Eickenberg and Kastner's OverfeatTransformer utility in sklearn_theano.feature_extraction.overfeat would be a good match for this operation, as mentioned by OP.
Eickenberg and Kastner's OverfeatTransformer utility in sklearn_theano.feature_extraction.overfeat would be a good match for this operation, as mentioned by OP.