[ros-users] stereo camera calibration

Jack O'Quin jack.oquin at gmail.com
Fri Feb 4 23:01:33 UTC 2011

On Fri, Feb 4, 2011 at 2:13 PM, Jack O'Quin <jack.oquin at gmail.com> wrote:
> On Fri, Feb 4, 2011 at 5:23 AM, Thomas Moulard <thomas.moulard at gmail.com> wrote:
>> On Fri, Feb 4, 2011 at 12:17 PM, Asghari Oskoei, Mohammadreza
>> <m.asghari-oskoei at herts.ac.uk> wrote:
>>> Hi
>>> I’m using a pair of Procilica cameras on care-o-bot (cob) robot, managed to
>>> calibrate them individually (monocular) but have a problem in stereo
>>> calibration. By running script mentioned for stereo calibration in your
>>> tutorial, I got ok messages for receiving services but no window that might
>>> be shown to calibrate, save or commit.
>>> By the way, by running stereo_image_proc, there are topics in the topic list
>>> (rostopic list), but no output comes out as you check them by rostopic hz or
>>> bw or echo. I have seen this in published topics by stereo_image_proc and
>>> face_detector, though they are in stream or continuous modes.
>> Your camera are probably not synchronized, you can take a look at this
>> topic for more information:
>> https://code.ros.org/lurker/message/20101130.125637.9414e705.en.html
> There is an open enhancement ticket for this:
>  https://code.ros.org/trac/ros-pkg/ticket/4217
> As far as I can tell this is still intended for release in
> Diamondback. But, it is still open and Patrick seems busy with many
> other urgent tickets right now. I don't know what the prognosis is.

Patrick recently committed a fix for #4217!

To test it, you'll need to check out the latest image_pipeline trunk
on top of unstable (or diamondback).



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