Dear morphometricians, I wish to alert you to a new paper (doi: 10.1111/2041-210X.12576), accepted in Methods in Ecology and Evolution, in which we propose and describe an R tool conceived to find the optimal smoothing settings when decimation is desired on a 3D mesh. In fact, 3D imaging techniques generate a series of alterations on the reconstructed surfaces, due to inaccuracies in the processes of acquisition and rendering. The topological simplification, by decimating vertices and facets of a mesh, can solve these problems by facilitating the subsequent steps in surface processing. By applying an optimal smoothing filter on the decimated model, it is possible to recover a percentage of anatomical information lost during the decimation procedure.
This first release of the tool is designed for those cases in which semi-landmarks are used. Specifically, our tool finds the optimal smoothing filter (algorithm type, iteration, scale factor parameter), just requiring a 3D mesh, a landmark set and a semi-landmark set as inputs. In the paper http://onlinelibrary.wiley.com/doi/10.1111/2041-210X.12576/epdf is reported a detailed description of the tool with an example of application on a 3D simplified model of Saccopastore 1. The R code, 3D model and landmark and semi-landmark sets are available as Supporting information and they are also accessible via Github https://github.com/Arothron/Arothron and Dryad repositories http://doi:10.5061/dryad.28631 . In the Arothron R package other useful functions are embedded, in particular to import Amira data in the R environment (e.g. landmark set, surface.path), for details see (Profico et al. 2016 Filling the gap. Human cranial remains from Gombore II (Melka Kunture, Ethiopia; ca. 850 ka) and the origin of Homo heidelbergensis doi 10.4436/JASS.94019) Best, Antonio ______________________________________ Antonio Profico PhD student Department of Environmental Biology – Dipartimento di Biologia Ambientale SAPIENZA Università di Roma Lab. 06 4991 2690 Mob. 3293440766 -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
