画像のURLを受け取りNumpyのArrayに変換する

url_to_image.py

import requests
from io import BytesIO

from PIL import Image
import numpy as np

def url_to_image(url):
    """
    url -> np.array (RGB)
    """
    response = requests.get(url, stream=True)
    if response.status_code == 200:
        return np.array(Image.open(BytesIO(response.content)).convert('RGB'))