compressed image to image

asked 2012-05-29 08:47:25 -0500

han
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I'm using rosjava to write code, but now when i use pi_face_tracker, i come across problems. The input of the pi_face_tracker should be type image, but what i get form the camera is compressed image. What should i do to solve it? Thank you.

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answered 2012-05-29 10:28:54 -0500

piyushk
2861 ●31 ●49 ●76 http://cs.utexas.edu/~piyushk

You can use the republish node to convert the transport from compressed to raw. Your call will look something like this:

rosrun image_transport republish compressed in:=(in_base_topic) raw out:=(out_base_topic)

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I don't know what class i can use for this in rosjava, can you help me on it?

han ( 2012-05-30 23:21:29 -0500 )edit

@han: I am not sure if I understand your question. You cannot call this in code from Java. It is a C++ binary. You should run it as a node alongside pi_face_tracker.

piyushk ( 2012-05-31 06:38:04 -0500 )edit

How could I include this rosrun inside of a launch file?

jorgelc79 ( 2015-05-14 05:32:03 -0500 )edit

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answered 2016-07-29 03:23:44 -0500

jtim
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I know this is an old question, but if somebody is looking for how to do this in a launch file the answer is here: http://answers.ros.org/question/12216...

the code is:

<node name="republish" type="republish" pkg="image_transport" output="screen" args="compressed in:=/axis_camera raw out:=/axis_camera/image_raw" />

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