参考以下launch文件内容
<launch><!-- decision and plan node --><node pkg="ros_indigosdk" type="ros_indigosdk_node" name="occam" respawn="true" output="screen"></node><!--<node pkg="in2_TransPctu_node" type="TransPctu_node" name="UAV" respawn="true" output="screen"></node>--><include file="$(find pointgrey_camera_driver)/launch/camera.launch"></include><include file="$(find darknet_ros)/launch/yolo_v3.launch"></include><node pkg="in2_display" type="in2_display" name="in2_display" respawn="true" output="screen"></node></launch>