两个video:
一个是图像/视频采集,一个是metadata采集
2. 相关工具库安装
安装opencv
pip3 install opencv-python-headless4.8.0.76
pip3 install opencv-python4.8.0.76
pip3 install opencv-contrib-python==4.8.0.76
验证是否安装成功
cat@lubancat:~$ python3
Python 3.8.10 (default, Nov 14 2022, 12:59:47)
[GCC 9.4.0] on linux
Type “help”, “copyright”, “credits” or “license” for more information.import cv2 as cv
print(cv.__version__)
4.8.0
3. 摄像头拍照
import cv2
import time
# 帧宽和高度
width = 640
height = 480
num = 1
# 创建一个VideoCapture对象,并打开系统默认的摄像头(也可以打开视频或者指定的设备)
cap = cv2.VideoCapture(9)
# 不能打开摄像头
if not cap.isOpened():
raise RuntimeError(