Jack, In that tutorial, I've tried but get nothing. rosrun camera_calibration cameracalibrator.py --size 9x6 --square 0.020 image:=/media/MOT/thuan2/sandbox/slam/calibrating/MVI_1642.AVI.out.3 monocular:=/forearm [rospack] warning: trailing slash found in ROS_PACKAGE_PATH After run roscore. I run the command above: I put the path to my image folder to the parameter image. But I only receive a warning. Any suggestion? On Sun, 2010-05-02 at 10:23 -0500, Jack O'Quin wrote: > On Sun, May 2, 2010 at 1:02 AM, Vu Hong Thuan wrote: > > Hi all, > > I want to do camera_calibration for my camera. I have got a set of check > > board images. How could I use camera_calibration on these images? > > http://www.ros.org/wiki/camera_calibration/Tutorials/MonocularCalibration