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Transport Image tutorial issue: subscriber doesn't show image

asked 2017-05-15 09:57:17 -0500

Hello everyone,

I tried to do the tutorial " Running the Simple Image Publisher and Subscriber with Different Transports " image_transport/Tutorials but I encountered an issue.

When I run the publisher everything seems to work:

rostopic echo /camera returns a matrix and

rostopic hz /camera proves that something is being published frequently

But then, when I want to use the subscriber which aims to display what is sent to /camera I only have a window(with my wallpaper on it) and then it crashes. I saw I was not the only one with this issue but couldn't find a solution.

So please if you have any idea how to help me it could be great. :)

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answered 2017-05-16 02:43:16 -0500

I found out what the error was: you have to add

 cv::waitKey(30);

after the imshow in the my_subscriber.cpp, otherwise, windows will just pop infinitely with nothing inside.

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Asked: 2017-05-15 09:57:17 -0500

Seen: 95 times

Last updated: May 16 '17