ERROR: cannot launch node of type [usb_cam/usb_cam_node]: usb_cam
1使用软件库里的uvc-camera功能包1.1检查摄像头lsusb显示如下:Bus002Device001:ID1d6b:0003LinuxFoundation3.0roothubBus001Device007:ID046d:082bLogitech,Inc.WebcamC170Bus001Device006:ID0461:4e2aPrimaxElectronics,LtdBus001Devic