in src_batch_job/source/model.py [0:0]
def to_vector(self, image):
'''
Vectorize an input Pillow image object.
'''
image_t = self.preprocess_image(image)
output = self._net(image_t.expand_dims(axis=0).as_in_context(self._ctx))
return output.asnumpy().reshape(-1, )