Python convert JPEG bytes to image for cv2-CodePudding

How can i pass row jpg data to cv2 i have a code that saves the image and than opens it agian but that is to slow, does someone know how to do it with out saving?

import requests
from PIL import Image
from io import BytesIO 
import time
import cv2

while True:
    response = requests.get("https://www.cleverfiles.com/howto/wp-content/uploads/2018/03/minion.jpg", stream=True, allow_redirects=True)
    image = Image.open(BytesIO(response.content))
    image.save(r'C:\Users\marti\Pictures\Desktop\scripts\CAM\IMG.jpg', 'JPEG')    #SAVE
    frame = cv2.imread(r'C:\Users\marti\Pictures\Desktop\scripts\CAM\IMG.jpg')    #OPEN    
    cv2.imshow("dfsdf",frame)
cv2.destroyAllWindows

CodePudding user response：

To answer your initial question, you could do

url = "https://www.cleverfiles.com/howto/wp-content/uploads/2018/03/minion.jpg"
frame =  Image.open(requests.get(url, stream=True, allow_redirects=True).raw)
cv2.imshow("dfsdf",frame)

But as per Mark's comment and this answer, you can skip PIL altogether:

url = "https://www.cleverfiles.com/howto/wp-content/uploads/2018/03/minion.jpg"

# Fetch JPEG data
d = requests.get(url)
# Decode in-memory, compressed JPEG into Numpy array
frame = cv2.imdecode(np.frombuffer(d.content,np.uint8), cv2.IMREAD_COLOR)
cv2.imshow("dfsdf",frame)