In function `::Synchronizer<message_filters::sync_policies::ExactTime<sensor_msgs::Image_<std::allocator<void> >, sensor_msgs::Image_<std::allocator<void> >, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType> >::disconnectAll()':
writeAssociateTXT.cpp:(.text._ZN15message_filters12SynchronizerINS_13sync_policies9ExactTimeIN11sensor_msgs6Image_ISaIvEEES6_NS_8NullTypeES7_S7_S7_S7_S7_S7_EEE13disconnectAllEv[_ZN15message_filters12SynchronizerINS_13sync_policies9ExactTimeIN11sensor_msgs6Image_ISaIvEEES6_NS_8NullTypeES7_S7_S7_S7_S7_S7_EEE13disconnectAllEv]+0x43): undefined reference to `message_filters::Connection::disconnect()'
CMakeFiles/writeAssociateTXT.dir/src/writeAssociateTXT.cpp.o: In function `message_filters::Connection message_filters::Signal9<sensor_msgs::Image_<std::allocator<void> >, sensor_msgs::Image_<std::allocator<void> >, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType, message_filters::NullType>::addCallback<boost::shared_ptr<sensor_msgs::Image_<std::allocator<void> > const> const&, boost::shared_ptr<sensor_msgs::Image_<std::allocator<void> > const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&>(boost::function<void (boost::shared_ptr<sensor_msgs::Image_<std::allocator<void> > const> const&, boost::shared_ptr<sensor_msgs::Image_<std::allocator<void> > const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&, boost::shared_ptr<message_filters::NullType const> const&)> const&)':
writeAssociateTXT.cpp:(.text._ZN15message_filters7Signal9IN11sensor_msgs6Image_ISaIvEEES4_NS_8NullTypeES5_S5_S5_S5_S5_S5_E11addCallbackIRKN5boost10shared_ptrIKS4_EESD_RKNS9_IKS5_EESH_SH_SH_SH_SH_SH_EENS_10ConnectionERKNS8_8functionIFvT_T0_T1_T2_T3_T4_T5_T6_T7_EEE[_ZN15message_filters7Signal9IN11sensor_msgs6Image_ISaIvEEES4_NS_8NullTypeES5_S5_S5_S5_S5_S5_E11addCallbackIRKN5boost10shared_ptrIKS4_EESD_RKNS9_IKS5_EESH_SH_SH_SH_SH_SH_EENS_10ConnectionERKNS8_8functionIFvT_T0_T1_T2_T3_T4_T5_T6_T7_EEE]+0x184): undefined reference to `message_filters::Connection::Connection(boost::function<void ()> const&)'
CMakeFiles/writeAssociateTXT.dir/src/writeAssociateTXT.cpp.o: In function `message_filters::Connection message_filters::SimpleFilter<sensor_msgs::Image_<std::allocator<void> > >::registerCallback<ros::MessageEvent<sensor_msgs::Image_<std::allocator<void> > const> const&>(boost::function<void (ros::MessageEvent<sensor_msgs::Image_<std::allocator<void> > const> const&)> const&)':
writeAssociateTXT.cpp:(.text._ZN15message_filters12SimpleFilterIN11sensor_msgs6Image_ISaIvEEEE16registerCallbackIRKN3ros12MessageEventIKS4_EEEENS_10ConnectionERKN5boost8functionIFvT_EEE[_ZN15message_filters12SimpleFilterIN11sensor_msgs6Image_ISaIvEEEE16registerCallbackIRKN3ros12MessageEventIKS4_EEEENS_10ConnectionERKN5boost8functionIFvT_EEE]+0xb3): undefined reference to `message_filters::Connection::Connection(boost::function<void ()> const&)'
collect2: error: ld returned 1 exit status
解决：添加catkin component image_transport