jamesp's profile - activity

overview network karma followed questions activity

2020-04-08 09:48:10 -0500	received badge	● Taxonomist
2012-09-03 23:53:56 -0500	received badge	● Famous Question (source)
2012-09-03 23:53:56 -0500	received badge	● Popular Question (source)
2012-09-03 23:53:56 -0500	received badge	● Notable Question (source)
2012-02-12 14:06:29 -0500	asked a question	uvc_camera exposure Hi, I recently ran the cameracalibrator.py node for a Logitech webcam and must've accidentally hit Commit while saving the calibration parameters; the images from the camera seem to have very short exposure rates (even on Cheese). Is there a way to set an exposure or re-enable auto-exposure? Or a way to undo the Commit from the calibration node? Thanks
2012-01-08 21:20:01 -0500	received badge	● Supporter (source)
2012-01-08 21:13:41 -0500	commented answer	Focal Length from Monocular Calibration Thank you for your reply!
2012-01-08 21:13:08 -0500	received badge	● Scholar (source)
2012-01-08 21:13:08 -0500	marked best answer	Focal Length from Monocular Calibration The camera matrix, as written out by cameracalibrator.py is as follows: `Fx 0 Cx 0 Fy Cy 0 0 1` where Fx and Fy are the x and y focal lengths in pixels, and (Cx, Cy) is the principal point.
2012-01-01 12:07:31 -0500	received badge	● Student (source)
2012-01-01 11:16:23 -0500	asked a question	Focal Length from Monocular Calibration I was wondering if the parameters saved from running the cameracalibrator.py node contain the focal length/s of the camera somewhere inside. If not, is it possible to determine a focal length based on these values? Thanks