-------- Original Message -------- Subject: Re: right/left looking photos for human face shape Date: Wed, 2 Nov 2011 06:14:49 -0400 From: andrea cardini <alcard...@interfree.it> To: morphmet@morphometrics.org Dear Mark, years ago, on a small dataset with the same individual photographed under two different angles, I managed to control for the angle by simply using residuals of a regression of shape onto the angle. By excluding the uniform component of variation from the regression, the accuracy of the model was improved. Likely a large amount of differences between the two pictures were approximately uniform. Possibly you may be able to do something similar, validate the regression model on subjects for which you have two pictures and then apply it to those for which you have only one picture. If you manage to get a pdf of the chapter mentioned by Dennis, I'd greatly appreciate if you could send me a copy. Thanks in advance. Cheers Andrea At 14:33 01/11/2011 -0400, you wrote:
-------- Original Message -------- Subject: right/left looking photos for human face shape Date: Tue, 1 Nov 2011 00:10:00 +0000 From: Mark Belk <mark_b...@byu.edu> To: morphmet_modera...@morphometrics.org <morphmet_modera...@morphometrics.org> Does anyone have a suggestion for how to correct for right/left lookers in human face shape. A colleague has a series of historical photos of people with known pedigrees, but many of the subjects are turned a few degrees to the right or left. Any suggestions on how to adjust for this rotation in the landmarks? Thanks, Mark Mark C. Belk Professor of Biology Editor, /Western North American Naturalist/ Brigham Young University 801-422-4154
Dr. Andrea Cardini Researcher in Animal Biology Dipartimento di Biologia, Universitá di Modena e Reggio Emilia, via Campi 213, 41100, Modena, Italy tel: 0039 059 2055017 ; fax: 0039 059 2055548 Honorary Fellow Functional Morphology and Evolution Unit, Hull York Medical School University of Hull, Cottingham Road, Hull, HU6 7RX, UK University of York, Heslington, York YO10 5DD, UK Adjunct Associate Professor Centre for Forensic Science , The University of Western Australia 35 Stirling Highway, Crawley WA 6009, Australia E-mail address: alcard...@interfree.it, andrea.card...@unimore.it, andrea.card...@hyms.ac.uk, andrea.card...@uwa.edu.au Webpage: http://sites.google.com/site/hymsfme/drandreacardini Datasets: http://ads.ahds.ac.uk/catalogue/archive/cerco_lt_2007/overview.cfm#metadata Editorial board for: Zoomorphology: http://www.springer.com/life+sciences/animal+sciences/journal/435 Journal of Zoological Systematics and Evolutionary Research: http://www.wiley.com/bw/journal.asp?ref=0947-5745&site=1 Hystrix, the Italian Journal of Mammalogy: http://www.italian-journal-of-mammalogy.it/
