[ros-users] camera_calibration

[Blaise Gassend]

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
moving.

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.
> 
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