Thanks so much On Tuesday, July 19, 2016 at 5:35:58 AM UTC-7, FaceGen Guru wrote: > > > Hi Jessie, > > There is no way to keep the age axis fixed when generating randomly > perturbed faces in the 'Genetic' tab. > > As you point out, the best way is to manually adjust the age of each > perturbed sample back to where you want it. > > Note that the random perturbations added in the 'Genetic' tab are > multivariate normally distributed in face space, so the magnitude of the > perturbations are not completely fixed but in fact follow a chi-squared > distribution (with 130 DOF over shape and color), with mean proportional to > the 'Randomness' value. Further, even if they were fixed magnitude > perturbations, there is no guarantee they are proportional to perceptual > measures of difference as they are defined by squared differences. > > Best wishes, > >
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