！！需要在ROS平台上安装   ROS见 https://www.cnblogs.com/haijian/p/8782560.html

cd ~/catkin_ws/src

下载usb_cam包

git clone https://github.com/bosch-ros-pkg/usb_cam.git usb_cam

编译

cd ..
catkin_make

启动节点测试

roslaunch usb_cam usb_cam-test.launch

 

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安装错误

（1）v4l2-ctl: not found

sudo apt-get install v4l-utils

（2）[usb_cam-test.launch] is neither a launch file in package [usb_cam] nor is [usb_cam] a launch file name      The traceback for the exception was written to the log file

source ~/catkin_ws/devel/setup.bash

 

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