Shawn, this all looks really cool -- and I am likely to refer my students to it the next time I have them do a 3D assignment. Two quick things I discovered from my own recent work with student 123DCatch projects:
1) If you're still running iOS 6 (as I am, sadly, because my phone doesn't have enough space for 7), 123DCatch won't work any more. It'll take the photos, but then it will hang on the upload. This is a known problem, and I assume has something to do with the SSL issues that iOS 6 ran into. You might want to let the workshop participants know that they'll need iOS 7.
2) Sketchfab has a rotation lock, so you can't rotate the images all the way around -- and it takes the rotation axis from the 123DCatch capture in a non-transparent way, so if you just go straight from 123DCatch to Sketchfab, you often end up with an object that's aligned sideways and won't rotate in the way you'd want it to (this happened a lot with my student projects: eg https://sketchfab.com/models/b037e1301c3248ca966d4d610442534e). You can fix this in Meshlab, but you have to realign the model within the rotation trackball. p3d.in doesn't have a rotation lock, so you can always get it to where you want it as a user (but then you can't have annotations).
I hope this is helpful! Good luck with the workshop. I'm going to try the VSFM tutorial and see how far I get...
Shawn, this all looks really cool -- and I am likely to refer my students to it the next time I have them do a 3D assignment. Two quick things I discovered from my own recent work with student 123DCatch projects:
1) If you're still running iOS 6 (as I am, sadly, because my phone doesn't have enough space for 7), 123DCatch won't work any more. It'll take the photos, but then it will hang on the upload. This is a known problem, and I assume has something to do with the SSL issues that iOS 6 ran into. You might want to let the workshop participants know that they'll need iOS 7.
2) Sketchfab has a rotation lock, so you can't rotate the images all the way around -- and it takes the rotation axis from the 123DCatch capture in a non-transparent way, so if you just go straight from 123DCatch to Sketchfab, you often end up with an object that's aligned sideways and won't rotate in the way you'd want it to (this happened a lot with my student projects: eg https://sketchfab.com/models/b037e1301c3248ca966d4d610442534e). You can fix this in Meshlab, but you have to realign the model within the rotation trackball. p3d.in doesn't have a rotation lock, so you can always get it to where you want it as a user (but then you can't have annotations).
I hope this is helpful! Good luck with the workshop. I'm going to try the VSFM tutorial and see how far I get...