Ask Your Question

does auto focus change focal length or intrinsic parameters?

asked 2014-10-23 09:43:07 -0600

tskaahyeah gravatar image

updated 2014-10-23 09:59:22 -0600

lets say I have the same camera shooting images will a setting without auto focus have different intrinsic parameters than of when auto focus is on?

please do leave some reference :)

edit retag flag offensive close merge delete

1 answer

Sort by ยป oldest newest most voted

answered 2014-10-23 11:13:37 -0600

updated 2014-10-23 13:07:33 -0600

Hi, Intrinsic parameter are related to focal and lens. Focal changes correspond to "zoom" changes (so it is not modified during auto-focus), while optic center correspond to lens alignment. And during focus, lens will move, but if the lens are perfect, they will not change the optic center. On chip camera, a small change can occur, but you can, most of the time, neglect the changes as they will be very (very) small!

You can find a good introduction in opencv doc :

edit flag offensive delete link more

Question Tools


Asked: 2014-10-23 09:43:07 -0600

Seen: 3,947 times

Last updated: Oct 23 '14