Ubuntu环境下USB摄像头安装调试

1. 检查摄像头是否支持UVC

lsusb

记录其VID和PID，输出类似Bus 003 Device 006: ID 1bcf:0234 Sunplus Innovation Technology Inc. LRCP AR0234，其中1bcf是VID，0234是PID

2. 安装UVC驱动

sudo apt-get update
sudo apt-get install linux-headers-generic build-essential
sudo apt-get install uvcvideo-dkms

3. 检查设备节点

ls /dev/video*

4. 使用opencv2调用摄像头驱动输出图像

import cv2


if __name__ == "__main__":
    cap = cv2.VideoCapture("/dev/video0")

    cap.set(cv2.CAP_PROP_FRAME_WIDTH, 1280)
    cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 720)
    cap.set(cv2.CAP_PROP_FPS, 30)

    while cap.isOpened():
        ret, frame = cap.read()
        if not ret:
            break

        cv2.imshow("Frame", frame)
        if cv2.waitKey(1) & 0xFF == ord("q"):
            break