[ros-users] camera_calibration

Blaise Gassend blaise at willowgarage.com
Wed Apr 7 16:53:07 UTC 2010

With two threads this morning discussing calibration with unsynchronized
cameras, I can't help wondering how well the camera_calibration code
will work if the cameras aren't being triggered simultaneously. If
camera_calibration decides to use a pair of frames in which the
checkerboard was moving, I imagine that you might be trying to match
checkerboards that were actually at different positions, which would
certainly lead to poor calibration.

I have no idea if this is a reasonable worry to have, and James could
probably say more about this than I could. I imagine that motion blur
would tend to discourage the use of frames in which the target is

On Tue, 2010-04-06 at 15:31 -0500, Patrick Beeson wrote:
> I'm trying to calibrate two identical 1394 cameras that are sitting next 
> to each other.  The stereo calibration from camera_calibration converges 
> to VERY bad R and T matrices, rotating the frames and
> the warping the images drastically.  I've tried several times, with no luck.
> _______________________________________________
> ros-users mailing list
> ros-users at code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users

More information about the ros-users mailing list