python实现ONVIF协议抓取华为摄像头图像

参考文档：配置摄像机ONVIF协议参数 - SDC 10.0 C系列产品文档 - 华为机器视觉 (huawei.com)

配置摄像机ONVIF协议参数

1）登录摄像机Web界面，选择“配置 > 视音频 > 视频”，将“编码协议”设置为“H.264”

2）进入“网络平台对接”配置，选择“第二协议参数 > ONVIF”，进入ONVIF协议参数配置页面

3）python代码实现

安装onvif包

pip install  -i https://pypi.tuna.tsinghua.edu.cn/simple onvif

代码实现

"""
ONVIF鉴权方式 Digest_MD5 (priority) / WSSE
"""
from onvif import ONVIFCamera
import cv2
import requests
from requests.auth import HTTPDigestAuth
import numpy as np

from datetime import datetime

print("请求前时间：", datetime.now().strftime("%Y-%m-%d %H:%M:%S"))

# 摄像头连接信息
camera_ip = 'xxx.xxx.xxx.xxx'  # 替换为实际的摄像头IP地址
camera_port = 80  # 替换为实际的端口号
username = 'xxxx'  # 替换为实际的用户名
password = 'xxxx'  # 替换为实际的密码
wsdl_path = 'C:/Software/Anaconda/anaconda/envs/yolov8_2/Lib/site-packages/wsdl'  # 替换为实际的WSDL文件路径

# 连接到ONVIF摄像头
camera = ONVIFCamera(camera_ip, camera_port, username, password, wsdl_path)

# 创建媒体服务
media_service = camera.create_media_service()

# 获取视频源配置
profiles = media_service.GetProfiles()
profile = profiles[0]

# 获取截图URL
snapshot_uri = media_service.GetSnapshotUri({'ProfileToken': profile.token})
snapshot_url = snapshot_uri.Uri

# 获取截图
response = requests.get(snapshot_url, auth=HTTPDigestAuth(username, password))

# 将截图保存为图像文件
if response.status_code == 200:
    image_data = np.frombuffer(response.content, np.uint8)
    image = cv2.imdecode(image_data, cv2.IMREAD_COLOR)

    print("请求后时间：", datetime.now().strftime("%Y-%m-%d %H:%M:%S"))
    cv2.imwrite('snapshot.jpg', image)
    print("Snapshot saved as snapshot.jpg")
else:
    print(f"Failed to get snapshot. Status code: {response.status_code}")

扩展：如果出现 onvif.exceptions.ONVIFError: Unknown error: No such file: /home/lzh/anaconda3/envs/py2/lib/python2.7/site-packages/wsdl/devicemgmt.wsdl报错

这是因为wsdl_path 路径没有配置正确，将其路径改为安装onvif包的位置，报错解决