Have you been through the network troubleshooting page?
http://www.ros.org/wiki/ROS/Troubleshooting#Network_Configuration

Tully

On Tue, Dec 21, 2010 at 1:58 AM, Homer Manalo
<homer.manalo@roboteknik.com>wrote:

> Yes I can see it. I'm actually using this line:
> rosrun image_view image_view image:=/gscam/image_raw
>
> It's like there is no communication between the camera and the
> image_converter.
>
> Here are some rostopic outputs:
> Published topics:
>  * /gscam/camera_info [sensor_msgs/CameraInfo] 1 publisher
>  * /gscam/image_raw [sensor_msgs/Image] 1 publisher
>  * /rosout [roslib/Log] 3 publishers
>  * /rosout_agg [roslib/Log] 1 publisher
>  * /image_topic_2 [sensor_msgs/Image] 1 publisher
>
> Subscribed topics:
>  * /image_topic [sensor_msgs/Image] 1 subscriber
>  * /gscam/image_raw [sensor_msgs/Image] 1 subscriber
>  * /rosout [roslib/Log] 1 subscriber
> homermanalo@Macmini-Linux:~/ros/stacks/pkg_test0$ rostopic info
> /image_topic_2
> Type: sensor_msgs/Image
>
> Publishers:
>  * /image_converter (http://Macmini-Linux:36632/)
>
> Subscribers: None
>
>
> homermanalo@Macmini-Linux:~/ros/stacks/pkg_test0$ rostopic info
> /image_topic
> Type: sensor_msgs/Image
>
> Publishers: None
>
> Subscribers:
>  * /image_converter (http://Macmini-Linux:36632/)
>
>
> homermanalo@Macmini-Linux:~/ros/stacks/pkg_test0$ rostopic info
> /gscam/image_rawType: sensor_msgs/Image
>
> Publishers:
>  * /gscam_publisher (http://Macmini-Linux:60675/)
>
> Subscribers:
>  * /image_view_1292924423744539054 (http://Macmini-Linux:51945/)
>
> thanks
>
>
> On Tue, Dec 21, 2010 at 5:26 PM, Billy Okal <b.okal@jacobs-university.de>wrote:
>
>> 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
>>>
>>> _______________________________________________
>>> ros-users mailing list
>>> ros-users@code.ros.org
>>> https://code.ros.org/mailman/listinfo/ros-users
>>>
>>>
>>
>>
>> --
>> Billy Okal
>> Jacobs University Bremen
>>
>> ----------------------------------------------------------------------------------------------------------------------
>> "Science without Religion is Lame and Religion without Science is Blind",
>> Albert Einstein
>>
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>>
>>
>
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>


-- 
Tully Foote
Systems Engineer
Willow Garage, Inc.
tfoote@willowgarage.com
(650) 475-2827