[ros-users] webcam driver for ros

[Adam Stambler]

Just one thing to add:

Gstreamer does not work well for the Logitech Quickcam Pro for Notebooks.
There is something going on with Gstreamer that makes the the picture lag by
as much as a second.  This occurs  (on my set up) with both the probe ROS
camera driver and through Opencv.  At the same time, my laptop's built in
webcam works perfectly.  Have other people had similar problems with
gstreamer?

On the other hand, directly accessing the V4l2 interface with the usb_cam
driver works great for the Quickcam Pro.

Regards,
Adam

On Tue, May 11, 2010 at 6:11 PM, Peter Brook <pbrook at cs.washington.edu>wrote:

>  I have used Brown University's probe driver to get my builtin webcam
> publishing in ROS. Since it uses gstreamer, it should work with pretty much
> any webcam that can be used in Ubuntu.
>
> Peter
>
>
> On 05/11/2010 09:52 AM, Tully Foote wrote:
>
> I've used the uvc_cam package for a number of webcams, including a Logitech
> Quickcam and a Microsoft Lifecam.
>
>  Tully
>
> On Tue, May 11, 2010 at 9:30 AM, Adam Stambler <adasta at gmail.com> wrote:
>
>> Hi Harmish,
>>
>> I have had good results using the usb_cam driver on my Logitech Quickcam
>> Pro.
>>
>> I did not have to edit the source code, but I did need to provide a new
>> pixel format as a parameter.  Try using this launch file:
>>
>> <launch>
>>     <node pkg="usb_cam" type="usb_cam_node" name="cam">
>>         <param name="video_device" value="/dev/video0"/>
>>         <param name="pixel_format" value="yuyv"/>
>>     </node>
>>
>>     </launch>
>>
>>
>> -Adam
>>
>>
>> On Tue, May 11, 2010 at 12:21 PM, Harmish Khambhaita <
>> harmish.khambhaita at dfki.de> wrote:
>>
>>> hello,
>>>
>>> i am trying hard to make logitech quickcam pro 4000 to work with ros. i
>>> have tried following drivers without sucess.
>>>
>>> gencam_cu - problem to link wiht libroslib.o - recompiling does not solve
>>> the problem !!
>>> logitech_usb_webcam - making does not give any executable
>>> usb_cam - has problems with ioctl(fd, VIDIOC_S_FMT, &fmt) - gives error
>>> 22 - invalid parameters
>>> uvc_cam - has problems with ioctl(fd, VIDIOC_S_FMT, &fmt) - gives error
>>> 22 - invalid parameters - i succeed in bypassing these errors by changing
>>> fmt.fmt.pix.pixelformat to V4L2_PIX_FMT_YUV420 and changing buffersize
>>> (NB_BUFFER = 2), however now i have segmentation fault
>>>
>>> if anybody have success running a webcam with ros, i would be thankful to
>>> know the driver and camera you are using.
>>>
>>> cheers,
>>> harmish.
>>> _______________________________________________
>>> ros-users mailing list
>>> ros-users at code.ros.org
>>> https://code.ros.org/mailman/listinfo/ros-users
>>>
>>
>>
>> _______________________________________________
>> ros-users mailing list
>> ros-users at code.ros.org
>> https://code.ros.org/mailman/listinfo/ros-users
>>
>>
>
>
> --
> Tully Foote
> Systems Engineer
> Willow Garage, Inc.
> tfoote at willowgarage.com
> (650) 475-2827
>
>
> _______________________________________________
> ros-users mailing listros-users at code.ros.orghttps://code.ros.org/mailman/listinfo/ros-users
>
>
> _______________________________________________
> ros-users mailing list
> ros-users at code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ros.org/pipermail/ros-users/attachments/20100511/43198fc9/attachment-0003.html>