bytes image cv2

Save an image into bytes.

Read an image from bytes.

The bytes can be stored in database as binary.

from io import BytesIO

from PIL import Image

import cv2

import numpy as np

img = Image.open(r'C:\temp\sample.jpg')

bytes_io = BytesIO()

img.save(bytes_io, 'JPEG', quality = 95)

content = bytes_io.getvalue()

#open bytes using cv2

np_array = np.frombuffer(content, np.uint8)

img2 = cv2.imdecode(np_array, cv2.IMREAD_COLOR)     

img2 = cv2.cvtColor(img2, cv2.COLOR_BGR2RGB)

#convert to image

img2 = Image.fromarray(img2) 

#open bytes using Image directly

img3 = Image.open(BytesIO(content))