ROS之usb_cam

source devel/setup.*sh
roslaunch usb_cam usb_cam-test.launch

rqt_graph查看動態消息圖
當咱們把鼠標放在/usb_cam/image_raw上面，相應的node（藍色和綠色）和topic（紅色）高亮

查看話題類型
rostopic type /usb_cam/image_raw
打印結果爲sensor_msgs/Image

rosrun image_view image_view image:=xx