Organic Modeling

Subdivision Surface modeling lends itself especially well to the construction of organic shapes such as humans, animals and fanciful creatures. Most creatures and even many humans in modern movies are designed using Sub-D technology. One of the popular 3-D model sites, Turbosquid, there are over 3000 models under the "People" category, over 5000 in the "Animals" category and over 500 in the "Creatures" category. SubD-NURBS does an excellent job of reverse engineering creature meshes. You can see below that we are able to accurately convert these models into a NURBS format so that they can be read into NURBS based systems such as Rhino and Inventor. You can see the quality of the surfaces which are mostly G2 continuity in some of the images which have both a Sub-D and NURBS. We show the surface breakdown for a couple of the models to give you an idea of what the resulting boundary representation would look like.




Below are some of the human Sub-D meshes we have processed with SubD-NURBS (Click image to enlarge):


Sub-D on Left - NURBS on Right (Click to Enlarge)

Surface Breakdown For NURBS

Imported into Autodesk Inventor

Surface Breakdown of Head

Close up of Sub-D and NURBS Head

Rhino Zebra Stripe Display Showing Continuity



Here is a collection of other images generated from Sub-D meshes of people (Click to Enlarge).






Here are some of the creatures that have been processed with SubD-NURBS. Note that some of the creatures had patches of triangles. As you can see from some of the complexity of the shapes, reverse engineering creatures can be a very challenging task. In fact most of these shapes would be exceptionally difficult, if not time prohibitive, to design with any kind of NURBS modeling system.