[ros-users] camera calibration 320x240 ?

[Tully Foote]

Adam,
To find closed tickets you can use the search
https://code.ros.org/trac/ros-pkg/search?q=3951  or add "Closed" in the
status query, https://code.ros.org/trac/ros-pkg/query

The pre-built boxturtle binaries are periodically updated when new packages
are released.  If you want super fast changes you will want to pull from
svn.  But remember this is much less stable.  You may want to just patch.
And remember that whatever you pull and change from svn, all dependent
packages will need to be rebuilt.

Tully

On Tue, Apr 6, 2010 at 2:55 PM, Adam Leeper <aleeper at stanford.edu> wrote:

> I saw the ticket earlier but now I can't find it anymore, I assume it is
> closed? This brings up some questions (I'm new to managed projects):
>
> 1. Where can I find closed tickets? (e.g., I can't see the "work around
> solution" if I can't find the ticket.)
>
> 2. If I am using the pre-built boxturtle install of ROS, how do I get
> updates of this sort? Do i svn just the packages or files I know are
> updated...?
>
>
> Thanks,
> Adam
>
>
> Adam Leeper
> Stanford University
> aleeper at stanford.edu
> 719.358.3804
>
>
>
> On Tue, Apr 6, 2010 at 1:29 PM, Patrick Beeson <beeson.p at gmail.com> wrote:
>
>> Ticket 3951 that I submitted yesterday reports this bug and provides a
>> "working" solution.
>>
>> James Bowman wrote:
>> > Hi Adam
>> >
>> > Afraid this is a bug... please raise a ticket in the ROS trac against
>> > image_pipeline, and assign it to me, jamesb
>> >
>> > Thanks.
>> >
>> > On Tue, Apr 6, 2010 at 11:26 AM, Adam Leeper <aleeper at stanford.edu
>> > <mailto:aleeper at stanford.edu>> wrote:
>> >
>> >     Hi-
>> >
>> >     I've successfully used cameracalibrator.py on a 640x480 image
>> >     stream, but now I'm trying to use it on a 320x240 image feed. I do
>> >
>> >     $rosrun camera_calibration cameracalibrator.py --size 7x6 --square
>> >     0.0127 image:=/my_camera/image camera:=/my_camera
>> >
>> >     like the tutorial says, but it gives the following error:
>> >
>> >     Exception in thread Thread-4:
>> >     Traceback (most recent call last):
>> >       File "/usr/lib/python2.6/threading.py", line 525, in
>> __bootstrap_inner
>> >         self.run()
>> >       File
>> >
>> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
>> >     line 59, in run
>> >         self.function(m)
>> >       File
>> >
>> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
>> >     line 147, in handle_monocular
>> >         scrib = cv.CreateMat(self.height / scale, self.width / scale,
>> >     cv.GetElemType(rgb))
>> >     ZeroDivisionError: integer division or modulo by zero
>> >
>> >
>> >     I think the issue is line 144 in cameracalibrator.py,
>> >     scale = int(math.ceil(self.width / 640))
>> >
>> >     but if I try doing either 640.0, or changing it to 320, I get this
>> error
>> >
>> >     Traceback (most recent call last):
>> >       File "/usr/lib/python2.6/threading.py", line 525, in
>> __bootstrap_inner
>> >         self.run()
>> >       File
>> >
>> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
>> >     line 59, in run
>> >         self.function(m)
>> >       File
>> >
>> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
>> >     line 187, in handle_monocular
>> >         self.redraw_monocular(scrib, rgb)
>> >       File
>> >
>> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
>> >     line 410, in redraw_monocular
>> >         self.buttons(display)
>> >       File
>> >
>> "/opt/ros/boxturtle/stacks/image_pipeline/camera_calibration/nodes/cameracalibrator.py",
>> >     line 389, in buttons
>> >         self.button(cv.GetSubRect(display, (x,180,100,100)),
>> >     "CALIBRATE", self.goodenough)
>> >     error
>> >
>> >     Any ideas?
>> >
>> >     Thanks!
>> >     --Adam
>> >
>> >
>> >
>> >
>> >
>> >     Adam Leeper
>> >     Stanford University
>> >     aleeper at stanford.edu <mailto:aleeper at stanford.edu>
>> >     719.358.3804
>> >
>> >     _______________________________________________
>> >     ros-users mailing list
>> >     ros-users at code.ros.org <mailto:ros-users at code.ros.org>
>> >     https://code.ros.org/mailman/listinfo/ros-users
>> >
>> >
>> >
>> >
>> > --
>> > J.
>> >
>> >
>> > ------------------------------------------------------------------------
>> >
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-- 
Tully Foote
Systems Engineer
Willow Garage, Inc.
tfoote at willowgarage.com
(650) 475-2827
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