Netvudu Posted June 9, 2013 Share Posted June 9, 2013 (edited) Hi there. I´ve been researching a bit on 3d scanning/photogrammetry lately, and was wondering about the following issue: Supposing I scan several different expressions for an actor, it´s clear to me how to retopologize one head to make a useable default mesh with displacements...now, how would one go about using other expressions? Blendshapes need same number of points, so I´m not quite clear about it. I´m not sure how could I create different displacement maps consdering the base mesh for each expression would be different. Any ideas on how this is done on production currently? Edited June 9, 2013 by Netvudu Quote Link to comment Share on other sites More sharing options...
WesleyE Posted June 10, 2013 Share Posted June 10, 2013 Not sure how this is done in production, but I can see a method where you take certain feature origin points from the expression model and seek target points on the model near those feature points and push them towards the origin points. But I would rather get a talented sculpter and let him sculpt the expressions on the cleaned scanned model and use that for your blendshapes. Quote Link to comment Share on other sites More sharing options...
Netvudu Posted June 10, 2013 Author Share Posted June 10, 2013 (edited) ok, but that would leave out all the secondary data from 4D scanning, this is, other scanned expressions which would be part of the benefit from the whole scanning thing. There must be a way, and somewhere, someone knows about it Edited June 10, 2013 by Netvudu Quote Link to comment Share on other sites More sharing options...
jordibares Posted June 18, 2013 Share Posted June 18, 2013 I have been involved in quite a few projects using this technique and we did rely on the scanning company to give us a mesh per shape that was topologically identical and clean. They have a set of tools to manipulate the datasets and generate the textures, normal maps and what not so didn't need to do much other than rig it. I used in a few occasions with a (long time ago now) dutch company called Eyetronics and then in London I believe Artem also did provide that service, may be also Centroid 3D which do scanning. Also have a look at a company called Infinite realities, they do some very interesting stuff. hope it helps. Quote Link to comment Share on other sites More sharing options...
edward Posted June 20, 2013 Share Posted June 20, 2013 Another company along these lines are http://www.image-metrics.com/ Quote Link to comment Share on other sites More sharing options...
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