See
http://answers.ros.org/question/2758/unable-to-use-image_view-with-eletric
The short answer there was, rebuild OpenCV without Qt.
Cheers,
Patrick
On Thu, Jan 26, 2012 at 3:20 PM, Bence Magyar <
mw.mzperx@gmail.com> wrote:
> Hello,
>
> I'm experiencing exactly the same with Ubuntu 11.04.
>
> <code>
> $rosrun image_view image_view image:=/gscam/image_raw
> init done
>
> (<unknown>:29973): GLib-GObject-WARNING **: invalid uninstantiatable type
> `(null)' in cast to `GtkWidget'
>
> (<unknown>:29973): GLib-GObject-WARNING **: instance of invalid
> non-instantiatable type `(null)'
>
> (<unknown>:29973): GLib-GObject-CRITICAL **: g_signal_connect_data:
> assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
> </code>
>
> Did any solution pop up since last August? :)
>
> --Bence
>
> 2011/8/6 Carlos J. <ubuntuslave@gmail.com>
>
>
>>
>> On Fri, Aug 5, 2011 at 6:23 PM, Jack O'Quin <jack.oquin@gmail.com> wrote:
>>
>>> On Fri, Aug 5, 2011 at 5:13 PM, Carlos J. <ubuntuslave@gmail.com> wrote:
>>> > Perhaps, it's only my case, but I'm experiencing problems with
>>> > image_pipeline packages, such as image_view and camera_calibration.
>>> They
>>> > seem related to wxWidgets. These problems occur only under electric.
>>> The
>>> > same packages seem to work fine under diamondback. I'm just crying out
>>> loud
>>> > to see if it's not just me who is experiencing this.
>>>
>>> More information would be helpful.
>>
>>
>>> What system are you running? What packages did you try?
>>>
>>> I'm using Ubuntu 11.04 and these 2 problems (that I'm aware of) only
>> happens only in ROS Electric.
>>
>> 1) When trying to run "image_view" (with all kind of images...tried
>> different Image topics), I get this:
>> $ rosrun image_view image_view image:=/camera/rgb/image_color
>> [rospack] warning: ignoring duplicate "nodelet" tag in export block
>> init done
>> opengl support available
>>
>> (<unknown>:15605): GLib-GObject-WARNING **: invalid uninstantiatable
>> type `(null)' in cast to `GtkWidget'
>>
>> (<unknown>:15605): GLib-GObject-WARNING **: instance of invalid
>> non-instantiatable type `(null)'
>>
>> (<unknown>:15605): GLib-GObject-CRITICAL **: g_signal_connect_data:
>> assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
>>
>> 2) With "camera_calibration", I get errors as following:
>> $ rosrun camera_calibration cameracalibrator.py BLABLABLAH
>> Traceback (most recent call last):
>> File
>> "/opt/ros/electric/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
>> line 50, in <module>
>> import cv2
>> ImportError: /usr/local/lib/python2.7/dist-packages/cv2.so: undefined
>> symbol: _ZNK2cv5flann5Index12getAlgorithmEv
>>
>> What results did you expect? What did you get?
>>>
>> None of these problems occur when I use (switch back) to diamondback. The
>> packages work as expected in diamondback. I have tried both binary and
>> from-source packages with the same results.
>>
>> I hope this could give you an idea of the problem.
>>
>> Thanks a lot for looking into it!
>>
>> Carlos
>>
>>
>>
>>> --
>>> joq
>>> _______________________________________________
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>>> ros-users@code.ros.org
>>> https://code.ros.org/mailman/listinfo/ros-users
>>>
>>
>>
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>>
>
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