Well, "Rd" stands for "radius distorted" and "Ru", respectively, for "undistorted". What I mean here is that Rd is the distance from picture center to the distorted pixel (e.g. in the original camera shot, which is distorted (and we want to rectify it)).
And right, I also noted the similarity between LF_DIST_MODEL_POLY5 and Adobe's model; but it also includes a coefficient for 'x' (although I don't understand its physical meaning, camera lens distorts equally in the x and y directions). Fitting one poly to another is also a valid approach, you can even try fitting all supported lensfun lens models to find the one that is closest to the target. However, this would introduce extra inaccuracies; given that the polynome fitting done by ALPC is also not ideal, this would effectively double the error. Since you're already familiar with Adobe lens model, maybe it would be easier to try implementing it in lensfun? You may skip the reverse transform, implement just the forward transform, that will be enough for most users. ------------------------------------------------------------------------------ Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project now. Try Jenkins in the cloud. http://p.sf.net/sfu/13600_Cloudbees _______________________________________________ Lensfun-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/lensfun-users
