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. > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users