Hi Manalo,

you can see the mages using image_view

image_view image:=<image topic> [image transport type]

More info here

http://www.ros.org/wiki/image_view

billy


On 21 December 2010 08:32, Homer Manalo <homer.manalo@roboteknik.com> wrote:

> I want to start opencv with this tutorial<http://www.ros.org/wiki/cv_bridge/Tutorials/UsingCvBridgeToConvertBetweenROSImagesAndOpenCVImages>but it doesn't work for me.
>
> I created a new package then added the cpp file to the src folder then
> added this line: rosbuild_add_executable(pkg_test0_imgToCv
> src/pkg_test0_imgToCv.cpp) to the CMakeLists.txt file. I already added the
> dependencies to the manifest file. Then make.
>
> When I run it nothing happens, I expect the highgui would appear. I can
> confirm that my camera(gscam) is streaming images. I can see that the topics
> listed are active but using echo on the image_topic and image_topic_2 prints
> out nothing. Using rxgraph, there are only the gstreamer_publisher node and
> image_converter node connected to rosout node. Did I miss something? How do
> I get this thing to work?
>
> thanks
>
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>
>


-- 
Billy Okal
Jacobs University Bremen
----------------------------------------------------------------------------------------------------------------------
"Science without Religion is Lame and Religion without Science is Blind",
Albert Einstein