Question on .coef output file

Community SlicerSALT
3

Hi, yes, that correct. Only the positive m are used in our SPHARM implementation. See also

  1. Styner M, Oguz I, Xu S, Brechbühler C, Pantazis D, Levitt JJ, Shenton ME, Gerig G. Framework for the Statistical Shape Analysis of Brain Structures using SPHARM-PDM. Open Science Workshop at MICCAI - Insight Journal. 2006. PMCID: PMC3062073
    Also look at Table 1

So we are only using the positive “m” coeffs with both the real and the imaginary part (i.e. we do not compute the negative “m” coeffs, where m is the order within a given degree).

Martin