How to use opencv in Python3 to read file from file buffer

Question

I am trying to use this library. In particular these 3 lines:

    image_stream = io.BytesIO(image_bytes)
    frame = cv2.imread(image_stream)

Answer 1

Here a solution:

import io, requests, cv2, numpy as np

url = "https://images.pexels.com/photos/236047/pexels-photo-236047.jpeg"
img_stream = io.BytesIO(requests.get(url).content)
img = cv2.imdecode(np.fromstring(img_stream.read(), np.uint8), 1)

cv2.imshow("img", img)
cv2.waitKey(0)