如何将Google Colab上传的字节类型图片转换为numpy数组

import cv2
import numpy as np
from google.colab import files

# 触发文件上传
uploaded = files.upload()

for file_name, img_byte_data in uploaded.items():
    # 字节流转换为OpenCV兼容的图像格式
    img_array = np.frombuffer(img_byte_data, dtype=np.uint8)
    cv_img = cv2.imdecode(img_array, cv2.IMREAD_COLOR)

    # 后续直接对cv_img执行OpenCV预处理操作即可
    # 示例预处理操作：
    # gray = cv2.cvtColor(cv_img, cv2.COLOR_BGR2GRAY)
    # resized = cv2.resize(cv_img, (224, 224))

内容的提问来源于stack exchange，提问作者jyyj yj