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fastai_cat_vs_dog_fork_3

Image Classification

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fastai_cat_vs_dog_fork_3 / pipeline.py

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osanseviero HF staff

Experiment with helpers

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	from typing import Dict, List, Any
	from PIL import Image

	import os
	from fastai.learner import load_learner
	from helpers import is_cat


	class PreTrainedPipeline():
	def __init__(self, path=""):
	# IMPLEMENT_THIS
	# Preload all the elements you are going to need at inference.
	# For instance your model, processors, tokenizer that might be needed.
	# This function is only called once, so do all the heavy processing I/O here"""
	self.model = load_learner(os.path.join(path, "model.pkl"))
	with open(os.path.join(path, "config.json")) as config:
	config = json.load(config)
	self.id2label = config["id2label"]

	def __call__(self, inputs: "Image.Image") -> List[Dict[str, Any]]:
	"""
	Args:
	inputs (:obj:`PIL.Image`):
	The raw image representation as PIL.
	No transformation made whatsoever from the input. Make all necessary transformations here.
	Return:
	A :obj:`list`:. The list contains items that are dicts should be liked {"label": "XXX", "score": 0.82}
	It is preferred if the returned list is in decreasing `score` order
	"""
	# IMPLEMENT_THIS
	# FastAI expects a np array, not a PIL Image.
	_, _, preds = self.model.predict(np.array(inputs))
	labels = [
	{"label": str(self.id2label["0"]), "score": preds[0]},
	{"label": str(self.id2label["1"]), "score": preds[1]},
	]
	return labels