Dear Andrea, My colleagues and I recently examined this in 2D images of Microtus (vole) molars: https://doi.org/10.1002/ece3.6063. We found that specimen orientation error was overall less than digitizing error among-observers, but greater than digitizing error within-observers. Interestingly, orientation error had a greater impact on group classification statistics than expected relative to the amount of variance quantified via Procrustes ANOVA for that error source. We suggested that the "Pinocchio effect" may have contributed to this discrepancy; however, that interpretation was speculative. I hope this helps.
Best regards, Nate On Friday, December 11, 2020 at 4:45:48 AM UTC-7 [email protected] wrote: > Dear All, > I am looking for geometric morphometric papers where people compared, in > 2D photos, the magnitude of digitization error (same pics landmarked > twice or more) with that due to the orientation of the specimens (two > pics or more for each specimen). I'd like to know how much variance the > different sources accounted for and I am mainly interested in this when > applied to 'highly 3D' structures such as vertebrate crania, mandibles, > long bones etc. > > Suggestions on refs or pdfs are very much appreciated. > Thanks in advance. > Cheers > > Andrea > > -- > Dr. Andrea Cardini > Researcher, Dipartimento di Scienze Chimiche e Geologiche, Università di > Modena e Reggio Emilia, Via Campi, 103 - 41125 Modena - Italy > tel. 0039 059 4223140 > > Adjunct Associate Professor, Centre for Forensic Anthropology, The > University of Western Australia, 35 Stirling Highway, Crawley WA 6009, > Australia > > E-mail address: [email protected], [email protected] > WEBPAGE: https://sites.google.com/view/alcardini2/ > or https://tinyurl.com/andreacardini > > FREE Yellow BOOK on Geometric Morphometrics: > https://tinyurl.com/yellowmorphobook > > ESTIMATE YOUR GLOBAL FOOTPRINT: > http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/ > SUPPORT: secondwarning.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]. To view this discussion on the web visit https://groups.google.com/d/msgid/morphmet2/f48a6cb5-aa3e-441d-85a1-3a140d229cd7n%40googlegroups.com.
