[ros-users] Bad performances with cameradc1394

[Dejan Pangercic]

Hi Sacha,

maybe you wonna show us the code?

Or profile the node using http://pr.willowgarage.com/wiki/sysprof.

cheers, D.

On Thu, May 13, 2010 at 4:46 PM, Blaise Gassend <blaise at willowgarage.com> wrote:
> There is an image_view in the rviz package that might be faster. (no
> guarantee)
>
> On Thu, 2010-05-13 at 10:43 +0100, Shadow wrote:
>> Eric :
>> Thanks, image+view is a great solution to show what I wanted.
>> Unfortunately, it is the same problem than before, around 50% of my
>> processor being used.
>>
>> Gary :
>> I've tried both 320*240 and 640*480 pictures, and the difference of
>> computing between those two resolution is not significant. I don't know
>> how to define more clearly what is eating too much :
>> 3748 hand      20   0 84984  22m  15m S   52  1.1   0:04.23
>> cameradc1394
>> What I did to test that was to launch the driver and to display the
>> picture at the same time with roslaunch.
>>
>> Le mercredi 12 mai 2010 à 07:30 -0400, Eric Perko a écrit :
>> > Have you tried using image_view (http://www.ros.org/wiki/image_view)
>> > on your raw image topic?
>> >
>> > For example, it should be something like 'rosrun image_view image_view
>> > image:=/camera/image_raw'. You can determine the actual image topic
>> > using 'rostopic list'.
>> >
>> > If you still want to display with OpenCV, you can take a look at the
>> > CvBridge package (http://www.ros.org/wiki/cv_bridge) to convert
>> > between ROS images and OpenCV images.
>> >
>> > - Eric
>> >
>> > On Wed, May 12, 2010 at 6:04 AM, Shadow <sacha at shadowrobot.com> wrote:
>> > > Hi,
>> > > I am trying the camera1394 driver right now to see if the same problem
>> > > occurs, but I can not manage to display the frame with that driver using
>> > > opencv, like it was easy to do with cameradc.
>> > >
>> > > I am using the latest Ubuntu with kernel 2.6.32-22, and here is my
>> > > firewire card :
>> > > 00:08.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire
>> > > II(M)] IEEE 1394 OHCI Controller (rev c0)
>> > > 00:09.0 FireWire (IEEE 1394): NEC Corporation uPD72874 IEEE1394 OHCI 1.1
>> > > 3-port PHY-Link Ctrlr (rev 01)
>> > >
>> > > If there is any integrated solution to display the stream, let me know,
>> > > since the problem only occurs when it is displayed.
>> > >
>> > > Thanks.
>> > >
>> > > Le mardi 11 mai 2010 à 11:59 -0500, Jack O'Quin a écrit :
>> > >> On Tue, May 11, 2010 at 11:31 AM, Eric Perko <wisesage5001 at gmail.com> wrote:
>> > >> > Sacha,
>> > >> >
>> > >> > Have you seen the same behavior with the newer camera1394
>> > >> > (http://www.ros.org/wiki/camera1394) driver or is this just the
>> > >> > cameradc1394 driver?
>> > >>
>> > >> If the problem appears with both drivers (likely IMHO), you are
>> > >> probably not getting DMA access due to some difficulty in your
>> > >> low-level library or kernel drivers.
>> > >>
>> > >> What distribution, kernel and firewire card are you running?
>> > >
>> > >
>> > > _______________________________________________
>> > > ros-users mailing list
>> > > ros-users at code.ros.org
>> > > https://code.ros.org/mailman/listinfo/ros-users
>> > >
>> > _______________________________________________
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>> >
>>
>>
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-- 
MSc. Dejan Pangercic
PhD Student/Researcher
Intelligent Autonomous Systems Group
Technische Universität München
Telephone: +49 (89) 289-26908
E-Mail: dejan.pangercic at cs.tum.edu
WWW: http://ias.cs.tum.edu/people/pangercic