ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange
Ask Your Question

albspe's profile - activity

2018-05-31 04:16:14 -0500 received badge  Self-Learner (source)
2018-05-31 04:16:14 -0500 received badge  Teacher (source)
2018-05-31 04:16:12 -0500 received badge  Student (source)
2017-12-29 12:12:43 -0500 received badge  Famous Question (source)
2016-03-07 13:49:49 -0500 received badge  Notable Question (source)
2015-12-04 03:34:25 -0500 received badge  Popular Question (source)
2015-12-03 11:10:11 -0500 answered a question Python - Compressed Image, Publisher/Subscriber

Solved the problem: the issue was in using a mix of roslaunch and rosrun. Once I called the code from the link from the same roslaunch file with the camera then everything worked fine.

Not 100% sure why though as a rqt_view showed the right node-tree ...

2015-12-02 18:36:09 -0500 asked a question Python - Compressed Image, Publisher/Subscriber

I have implemented the code provided in:

http://wiki.ros.org/rospy_tutorials/T...

however the published topic is empty. It does not contain any information. I tried to dump the topic information into a .txt file and it is empty. when I compare this with the topics published by the camera node, I get the right information (header, frame_id, data).

I printed the msg data structure before "self.image_pub.publish(msg)" (line 87) and the msg structure appears fine.

I have the compressed transport installed and working correctly as I can see the image from the camera node using image_view but not the /output/image (the topic published by the code from the link above). It is obvious I am missing something ... not sure what.

Any suggestion?