def _preprocess_data(data):
    """
    Applies any standard preprocessing we might do on data, whether it is during
    training or testing time. 'data' is a numpy array of unrolled pixel vectors with
    a remote sensing image.
    """
    # Do nothing for now.
    # We don't scale it's values to be between 0 and 1 as our Caffe model will do that.
    return data