Re: [MORPHMET] 3D images - manipulation and registration?
Hi Stefan, Thank you very much for the tip. The *pcAlign* function worked like a charm! Regards, Hildur On Thursday, February 5, 2015 at 3:45:56 PM UTC, Stefan Schlager wrote: Hi Hildur, you can try to use the function pcAlign (from my R-package Morpho), to align meshes by their PC-axes. And, if you like my (inofficial) package mesheR ( https://github.com/zarquon42b/mesheR) is sporting a variety of rigid, similarity, affine and elastic ICP registration procedures for 3D-meshes. Best Stefan On 04/02/15 14:22, Hildur Magnúsdóttir wrote: Hi everyone, I'm using geometric morphometrics to study variation in the shell morphology of the common whelk. I'm really interested in using 3D images as a basis for this study but I'm having problems with manipulation and registration (e.g. rigid registration) of my images prior to digitizing of landmarks. I'm using a MakerBot® Digitizer™ Desktop 3D Scanner for capturing the 3D images and it generates either .stl or .ply files that I read into the R for digitizing. My problem is that when I read those files into the R they are not all oriented in the same way inside the box in the rgl window, thus it is very hard to align them reliably so that the landmarks are truly comparable between individuals. So my question to you all is if you know of a method to align or register the 3D images before I read them into R? Or of a package in R that can perform this action? I would be very grateful for any advice on this, Hildur Hildur Magnúsdóttir PhD Student University of Iceland, Department of Life and Environmental Sciences and Hólar University College, Department of Aquaculture and Fish Biology Telephone: +354 823 2485 -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+u...@morphometrics.org javascript:. -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.
Re: [MORPHMET] 3D images - manipulation and registration?
Hi Hildur, you can try to use the function pcAlign (from my R-package Morpho), to align meshes by their PC-axes. And, if you like my (inofficial) package mesheR (https://github.com/zarquon42b/mesheR) is sporting a variety of rigid, similarity, affine and elastic ICP registration procedures for 3D-meshes. Best Stefan On 04/02/15 14:22, Hildur Magnúsdóttir wrote: Hi everyone, I'm using geometric morphometrics to study variation in the shell morphology of the common whelk. I'm really interested in using 3D images as a basis for this study but I'm having problems with manipulation and registration (e.g. rigid registration) of my images prior to digitizing of landmarks. I'm using a MakerBot® Digitizer™ Desktop 3D Scanner for capturing the 3D images and it generates either .stl or .ply files that I read into the R for digitizing. My problem is that when I read those files into the R they are not all oriented in the same way inside the box in the rgl window, thus it is very hard to align them reliably so that the landmarks are truly comparable between individuals. So my question to you all is if you know of a method to align or register the 3D images before I read them into R? Or of a package in R that can perform this action? I would be very grateful for any advice on this, Hildur Hildur Magnúsdóttir PhD Student University of Iceland, Department of Life and Environmental Sciences and Hólar University College, Department of Aquaculture and Fish Biology Telephone: +354 823 2485 -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org mailto:morphmet+unsubscr...@morphometrics.org. -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org. signature.asc Description: OpenPGP digital signature
