Cannot display image in rqt and rviz

[houhaol]

Hello,

My Turttlebot3 waffle_pi was configured with Ubuntu Mate 18.04 32-bit and melodic ROS. I installed this raspicam_node as your instructions but modified a bit as this issue suggest #102 which just skip the skip the --rosdistro=kinetic option.

It built well but when i run it, no image showed in rqt.
[REMOTE PC]
roscore
[TURTLEBOT1]
roslaunch turtlebot3_bringup turtlebot3_rpicamera.launch
or
roslaunch raspicam_node camerav2_1280x960.launch
[REMOTE PC]
roslaunch turtlebot3_bringup turtlebot3_remote.launch
[REMOTE PC]
rqt_image_view
Does not show any camera input (shows some gradient)

Can you help about this issue? Thanks a lot.

[anfederman]

See if topics are echoed

Rostopic list

Look for camera topics

Then

rostopic echo /camera/image_raw*
*Not sure the exact name

If you see data, rqt-image view should list these, and you select them. If no data, then you have either a network or loading issue. If there are network issues you will see no data in other sensor topics.

Good luck.

[houhaol]

See if topics are echoed

Rostopic list

Look for camera topics

Then

rostopic echo /camera/image_raw*
*Not sure the exact name

If you see data, rqt-image view should list these, and you select them. If no data, then you have either a network or loading issue. If there are network issues you will see no data in other sensor topics.

Good luck.

Hi,
Thanks for your reply.

I listed all published topics using rostopic list. They are already there, on my remote PC

Then i printed out the data using echo, it works. But still can not visualize in rqt_view_image.

---

I tried these on my turtlebot3 solely, put aside my remote pc. The camera works on rqt and rviz.
On bot
`roslaunch raspicam_node camerav2_1280x960.launch
rqt_image_view'

would it be a loading issue or related to remote control?

[houhaol]

I failed using a WSL system for this. I successfully made it work on my Linux remote PC now. But any idea to fix this issue on wsl.

[Lmixq]

I have the same problem. I listed the published topics and echo them. They are there. But I can't view on rviz and rqt by WSL and XLaunch. Have you solved it?

[anfederman]

Make sure both ROS_IP and ROS_MASTER_URI are expressed as IP numbers, not named. Example on workstation: export ROS_IP=10.0.0.24, export ROS_MASTER_URI=http://10.0.0.105:11311

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On Sat, Aug 6, 2022, 1:10 PM Lmixq ***@***.***> wrote: I have the same problem. I listed the published topics and echo them. They are there. But I can't view on rviz and rqt by WSL and XLaunch. Have you solved it? — Reply to this email directly, view it on GitHub <#106 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABHZ3756BSYY7ZMIJGD5YADVX3BBTANCNFSM4STEEPEQ> . You are receiving this because you commented.Message ID: ***@***.***>