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orb-slam测试摄像头遇到问题

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1.出现错误:ERROR: cannot launch node of type [usb_cam/usb_cam_node]: usb_cam

解决:sudo apt-get install ros-indigo-usb-cam -y(参考自一篇博客,换一个安装命令)
2.即使配置为"/dev/video1" /,命令行输入:roslaunch usb_cam usb_cam-test.launch时,打开笔记本自带摄像头,改为输入:roslaunch usb_cam-test.launch即可打开usb摄像头

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