Hi Dr. Viviana, thank you very much for your exposition. I noted that there are several softwares in Geomagic, such as Geomagic Design, Geomagic Freeform, and Geomagic Wrap. May I know which Geomagic software did you use? Thank you very much!
Best regards, Patrick WEN On Wednesday, 14 September 2016 18:11:12 UTC+8, mtoroibacache wrote: > > Dear Colleagues, > > I really appreciate your help with this. Indeed, there is a bit of > everything you mentioned in both the problem and the solution. I will try > to summarise it in case it can help someone else: > > - File names: Indeed I had problems in the past with .obj files whose > names had spaces, as Thomas mentioned. This was not the case though (I > learned my lesson), but it could happen to someone else. > > - Lack of software to do this in a very reliable way: as Bill mentioned, > there might be issues with accuracy by transforming an .obj with texture to > a coloured .ply. I will explore the use of Blender directly in .obj files > for landmark placing. I am not too worried about my data as the landmark > configuration corresponds to human faces (the texture will guide me in > placing landmarks in some curved places), where in my experience geometry > dimensions exceed small inaccuracies. But it is definitely something to > bear in mind. Of course, I shall run tests to assess the effect of > measurement error on my data. > > - The .obj texture files: a big problem seemed to be that the original > data had three .jpg files depicting texture. As Pablo mentioned, the > "standard" texture should be one file. So... > > - ... Geomagic comes to rescue (maybe Blender does this too?): Anneke > suggested to use Geomagic, which indeed helps a lot. Antonio took my files > and helped me to generate in Geomagic the single-.png-file texture, which > can then be used to produce coloured .ply and .wrl files in Meshlab that > can be opened in Avizo (.wrl, for which an extra step in Geomagic is > needed), and in the R packages Geomorph and Morpho for landmark placing. > > About Joes's comment, I do not believe .stl can hold colours, but I do not > have too much experience with the .stl format. The .obj format (as well as > .ply) has a relatively simple structure that describes the position in > space of faces and vertices plus other stuff and can be created "by hand" > using a text editor such as Notepad (I am sure you might have checked this > but just in case https://en.wikipedia.org/wiki/Wavefront_.obj_file). I > have written .ply files in the past that worked very well for doing > morphometric analyses in R. > > So, again thanks everyone for all the help! > > Best wishes, > Viviana > > > 2016-09-07 21:35 GMT+02:00 pablo.diaz.jarufe <pablo.di...@gmail.com > <javascript:>>: > >> Hello Viviana >> Working with DAVID I noticed that the textures of the OBJ files. are >> saved in PNG format, not in JPG; and all the views are in the same file. >> There is any way to create this kind of PNG. file with your pictures?. May >> be this correction could work fine in meshlab. >> I hope this information will be useful >> Best >> >> >> El jueves, 1 de septiembre de 2016, 8:31:47 (UTC-3), mtoroibacache >> escribió: >>> >>> Deal Morphometricians, >>> >>> I have .obj files with textures from three .jpg photos. I can load and >>> see the textures very nicely in Meshlab, but I need the textures to be >>> transformed into a coloured .ply file to do geometric morphometric analyses >>> (the landmarks are represented in the textures). So far it has not worked >>> doing it from Meshlab, so my questions are: >>> >>> - I know I can place landmarks in Meshlab using the .obj file, but when >>> I do it, the software crashes. any thoughts? the .obj file is 16 Mb big. Is >>> there a limit to files size in Meshlab? I would rather not to downsample >>> the mesh to not lose anatomical details. >>> >>> - When using the Transfer Texture to Vertex Color function, the texture >>> gets messed. It seems from web forums that Mshlab takes only one of the (in >>> this case) three .jpg files to do the colouring of the .ply mesh. Does >>> anybody know how to fix this? Another freeware software? >>> >>> - Is there any landmark acquisition software that loads .obj files with >>> textures? So far, I have not been able to do it in Landmark Editor, Evan >>> toolbox, Avizo, Morpho nor Geomorph. >>> >>> Any help is greatly appreciated. >>> >>> Best (y saludos), >>> Viviana >>> >>> >>> >>> -- >>> >>> *Viviana Toro-Ibacache DDS MSc PhD* >>> Profesora Asistente *(Assistant Professor)* >>> Centro de Análisis Cuantitativo en Antropología Dental (CA2) >>> Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas >>> Facultad de Odontología Universidad de Chile >>> >>> Dirección: Sergio Livingstone Pohlhammer 943 >>> *(address)* Independencia, Región Metropolitana >>> Chile >>> Email: mtoroi...@odontologia.uchile.cl >>> Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ >>> www.cienciaymemoria.cl/staff.html >>> >> -- >> 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 morphmet+u...@morphometrics.org <javascript:>. >> > > > > -- > > *Viviana Toro-Ibacache DDS MSc PhD* > Profesora Asistente *(Assistant Professor)* > Centro de Análisis Cuantitativo en Antropología Dental (CA2) > Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas > Facultad de Odontología Universidad de Chile > > Dirección: Sergio Livingstone Pohlhammer 943 > *(address)* Independencia, Región Metropolitana > Chile > Email: mtoroi...@odontologia.uchile.cl <javascript:> > Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ > www.cienciaymemoria.cl/staff.html > -- 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. 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