def image_to_feature(self, image_np):
"""
???RGB, (3, 100, 100)?numpy.array????????????????????
"""
_train = chainer.config.train
chainer.config.train = False
x = chainer.Variable(numpy.array([image_np], dtype=numpy.float32))
feature_vector = F.flatten(self.fe.reduct(x)).data
chainer.config.train = _train
return feature_vector
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