使用 ByteIO 时图像的颜色差异

如何解决使用 ByteIO 时图像的颜色差异

import os
from pathlib import Path

import numpy as np
import requests
from PIL import Image
from io import BytesIO
req = requests.get("https://upload.wikimedia.org/wikipedia/commons/0/07/Honeycrisp-Apple.jpg",headers={
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/79.0.3945.123 Safari/537.36"},timeout=3)
img = BytesIO(req.content)
data = Image.open(img)
data.save("haha.jpg")
with open(os.path.join("haha1.jpg"),"wb") as f:
    f.write(req.content)

如下图所示，图像存在亮度差异，这是什么原因以及如何解决？

下面是haha.jpg

下面是haha1.jpg