Hallöchen! Helmut Jarausch writes:
> [...] > > Sorry, but I can't follow you. > The PTLens model (= lensfun model) reads > Ru = Rd * ( d + Rd * ( c + Rd * ( b + Rd * a ) ) ) > > Here, Rd is well defined as the radial coordinate of a pixel in the > transformed image. Look at the first equation on <http://lensfun.sourceforge.net/calibration-tutorial/lens-distortion.html>. Rd is on the left-hand side of the equation. This is because one doesn't undistort the original coordinates, but one distorts the coordinates of the desired perfect image and looks them up in the original image. > What you are suggesting is to rescale Rd -> d*Rd which is not > allowed. If you scale Rd, which is used for the look-up, this is a uniform scaling of the original image. Tschö, Torsten. -- Torsten Bronger Jabber ID: torsten.bron...@jabber.rwth-aachen.de ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohomanageengine _______________________________________________ Lensfun-users mailing list Lensfun-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lensfun-users
