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It is unlikely that your full qualified topic name is /image_rect, it is probable that it is /camera/image_rect. Check using rostopic list or rosnode list / rosnode info (or rxgraph if you prefer a GUI) which topics are published by your rectification node.
You can also then check if raw data are passing by this topic using rostopic echo -n 1 --noarr /your/rectified/image/topic which will display the rectified image header for one image. If this does not display anything it means that either the node crashed, does not publish data or you have some network issues.
Also take a look at the logging information both in the terminal you launched your node and using rxconsole and search for eventual error messages.
| | 2 | No.2 Revision |
It is unlikely that your full qualified topic name is /image_rect, it is probable that it is /camera/image_rect. Check using rostopic list or rosnode list / rosnode info (or rxgraph if you prefer a GUI) which topics are published by your rectification node.
You can also then check if raw data are passing by this topic using rostopic echo -n 1 --noarr /your/rectified/image/topic which will display the rectified image header for one image. If this does not display anything it means that either the node crashed, does not publish data or you have some network issues.
Also take a look at the logging information both in the terminal you launched your node and using rxconsole and search for eventual error messages.
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