ros-perception / ros-perception/image_common
Follow the image_transport tutorial and met a problem with my_subscriber node
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- Dominant language
- C++
- Stars
- 153
- Forks
- 253
- Avg merge
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- Merged PRs (30d)
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Description
Follow the tutorial and the my_publisher node went well, but when I rosrun my_subscriber node, the 'view' window flashed and gone, command line is shown as followed:
rosrun image_transport_tutorial my_subscriber
(view:4441): GLib-GObject-CRITICAL **: 20:30:25.725: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(view:4441): GLib-GObject-CRITICAL **: 20:30:25.776: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
Attempt to unlock mutex that was not locked
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the image_transport tutorial through the my_subscriber node and record the ROS, operating-system, display, and image-source details alongside the reported GLib and mutex messages. Compare the subscriber behavior with the tutorial's expected result; done means the view window remains usable and the node exits without these errors.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- robotics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100