Hi Matt,
You should post this question on answers.ros.org.
RVIZ forces you to give a frame ID to see the image, and this frame ID must
“exist”. Often, when you see this error, it’s because you don’t have a TF
between your reference frame and your camera frame. You can just publish a dummy
TF if you don’t need anything complex.
To help you debug, you can use image_view like Suat suggested, because this
one does not require a frame id.
Benoit
Sent: Thursday, April 28, 2011 11:32 AM
Subject: Re: [ros-users] viewing usb webcam stream with
rviz
Hi,
try image_view. "rosrun image_view image_view image:=<topic>"
-Suat
On Thu, Apr 28, 2011 at 2:28 AM, Matt McLellan
<mattmclel@gmail.com> wrote:
Hi,
Does anyone have any experience with viewing a
image stream from a usb webcam?
I have the usb_cam node (part of the
bosch_drivers package) running, but I can't seem to view the video in
rviz. It gives me an error saying 'fixed frame does not exist'. I
get the same error when I run the camera using the uvc_camera node as
well.
With both nodes, I can see that the camera is turned on (the led
next to the lens lights up), and I can display the raw image dump i a
terminal, but what is the best way to actually view the
video?
Thanks.
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