Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

monocular Camera calibration in ROS [closed]

asked 2013-09-18 07:15:28 -0500

JP
95 ●14 ●20 ●27

updated 2013-11-14 11:03:38 -0500

tfoote

58457 ●128 ●550 ●526 http://www.ros.org/

Hello,

I was trying the camera calibration from the following link: link:text and my camera feed is shown in one window of the GUI (There is another window derectly below this but it is blank). The problem is that my checkerboard will not highlight.

I printed out a 7x7 checkerboard where each square is 0.024 meters. I tried the camera from my webcam but it could not detect like it does in the tutorial. I get the window but "calibrate" "save" and "commit" are hazed out and there are no "x" "y" and "size" highlighted like in the tutorial.

Thanks

edit retag flag offensive reopen merge delete

Closed for the following reason the question is answered, right answer was accepted by georgebrindeiro
close date 2013-09-18 09:49:29

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2013-09-18 09:37:40 -0500

georgebrindeiro

1264 ●26 ●38 ●56 http://www.linkedin.co...

updated 2013-09-18 09:39:10 -0500

Check out this question. My guess is you are just as confused as I was back then: the size variable refers to the number of inner corners, not the number of squares.

edit flag offensive delete link

Comments

Thanks so much! Doing 6x6 worked perfectly.

JP ( 2013-09-18 09:45:02 -0500 )edit

Isn't the documentation confusing? I'm glad I could help, I remember it took me forever to figure this out (almost a month!)

georgebrindeiro ( 2013-09-18 09:46:21 -0500 )edit

Yea it sure is! It took me a week to figure out that I even had to use a checkerboard to calibrate the camera! The page I linked should state it much clearer but hopefully this post will help many others in the future! I really appreciate your help, thanks once again!

JP ( 2013-09-18 09:54:27 -0500 )edit

add a comment

Question Tools

1 follower

Stats

Asked: 2013-09-18 07:15:28 -0500

Seen: 431 times

Last updated: Sep 18 '13

monocular Camera calibration in ROS [closed] edit

Closed for the following reason the question is answered, right answer was accepted by georgebrindeiro close date 2013-09-18 09:49:29