Apparatus and methods for detailing subdivision surfaces
View Patent ↗The present disclosure provides a system and method for the development and manipulation of three-dimensional voxel-based models. The method includes accessing, by a processor of a computing device, a subdivision surfacing geometry (SubD) model and converting a portion of features of the SubD model to a voxel model. The method includes accessing a texture for application to the voxel model and combining the texture and the voxel model to create a textured voxel model. The method includes determining displacement maps determined based in part on a difference between a surface portion of the voxel model and a surface portion of the SubD model and applying the displacement maps to the surface portion of the SubD model to determine a second SubD model where the second SubD model is configured for manipulation while preserving a visual aesthetic and a geometric placement of the added texture.
1. A method comprising:
accessing, by a processor of a computing device, a subdivision surfacing geometry (SubD) model;
converting, by the processor, at least a portion of a plurality of features of the SubD model to a voxel model;
accessing, by the processor, a texture for application to the voxel model;
combining, by the processor, the texture and the voxel model to create a textured voxel model;
determining, by the processor, one or more displacement maps, wherein the one or more displacement maps are determined based at least in part on a difference between a surface portion of the textured voxel model and a surface portion of the SubD model; and
applying, by the processor, the one or more displacement maps to the surface portion of the SubD model to determine a second SubD model, wherein the second SubD model is configured for manipulation while preserving an appearance or geometric placement of the added texture.
2. The method of claim 1 , comprising:
determining, by the processor, prior to converting the SubD model to a voxel model, a polygonal mesh, wherein the polygonal mesh forms a cage surrounding the surface portion of the SubD model.
3. The method of claim 2 , wherein converting at least a portion of a plurality of features of the SubD model to the voxel model comprises:
determining, by the processor, one or more vertex locations from one or more faces of the polygonal mesh;
determining, by the processor, based at least in part on the one or more vertex locations, a mesh surface; and
converting, by the processor, the mesh surface into a plurality of voxels.
4. The method of claim 3 , wherein determining the mesh surface comprises meshing the one or more vertex locations as quadrilaterals.
5. The method of claim 2 , comprising:
refining, by the processor, the polygonal mesh, wherein refining comprises subdividing one or more features of the polygonal mesh to determine a refined polygonal mesh.
6. The method of claim 5 , wherein the one or more features of the polygonal mesh includes at least one member selected from a group consisting of edges, faces, and vertices.
7. A system for texture manipulation on the surface a three-dimensional representation of a non-homogenous object comprising:
a processor; and
a memory having stored thereon:
a voxel-based representation of the non-homogenous object,
a sub subdivision surfacing geometry (SubD) representation of the non-homogenous object, and
a set of instructions, wherein the instructions, when executed by the processor, cause the processor to:
apply, to the voxel-based representation of the non-homogenous model, a voxel-based representation of a texture,
merge the voxel-based representation of the non-homogenous model with the voxel-based representation of the texture,
capture a surface model of the merged voxel-based representation, and
apply the texture, via the surface model, to the SubD representation.
8. The system of claim 7 , wherein the instructions, when executed by the processor, further cause the processor to:
determine a polygonal mesh that forms a cage surrounding the surface portion of the SubD model.
9. The system of claim 8 , wherein the instructions, when executed by the processor, further cause the processor to convert, prior to the memory having stored thereon the voxel-based representation, at least a portion of a plurality of features of the SubD representation to the voxel-based representation, including the processor being caused to:
determine one or more vertex locations from one or more faces of the polygonal mesh;
determine a mesh surface based at least in part on the one or more vertex locations; and
convert the mesh surface into a plurality of voxels.
10. The system of claim 9 , wherein the processor being caused to determine the mesh surface includes being caused to mesh the one or more vertex locations as quadrilaterals.
11. The system of claim 8 , wherein the instructions, when executed by the processor, further cause the processor to:
refine the polygonal mesh, including the processor being caused to subdivide one or more features of the polygonal mesh to determine a refined polygonal mesh.
12. The system of claim 11 , wherein the one or more features of the polygonal mesh includes at least one member selected from a group consisting of edges, faces, and vertices.
13. A non-transitory computer readable medium having instructions stored thereon, wherein the instructions, when executed by a processor, cause the processor to:
access a subdivision surfacing geometry (SubD) model;
convert at least a portion of a plurality of features of the SubD model to a voxel model;
access a texture for application to the voxel model;
combine the texture and the voxel model to create a textured voxel model;
determine one or more displacement maps, wherein the one or more displacement maps are determined based at least in part on a difference between a surface portion of the textured voxel model and a surface portion of the SubD model; and
apply the one or more displacement maps to the surface portion of the SubD model to determine a second SubD model, wherein the second SubD model is configured for manipulation while preserving an appearance or geometric placement of the added texture.
14. The non-transitory computer readable medium of claim 13 , wherein the instructions, when executed by the processor, further cause the processor to:
determine, prior to conversion of the SubD model to a voxel model, a polygonal mesh, wherein the polygonal mesh forms a cage surrounding the surface portion of the SubD model.
15. The non-transitory computer readable medium of claim 14 , wherein the processor being caused to convert at least a portion of a plurality of features of the SubD model to the voxel model includes the processor being caused to:
determine one or more vertex locations from one or more faces of the polygonal mesh;
determine a mesh surface based at least in part on the one or more vertex locations; and
convert the mesh surface into a plurality of voxels.
16. The non-transitory computer readable medium of claim 15 , wherein the processor being caused to determine the mesh surface includes being caused to mesh the one or more vertex locations as quadrilaterals.
17. The non-transitory computer readable medium of claim 14 , wherein the instructions, when executed by the processor, further cause the processor to:
refine the polygonal mesh, including the processor being caused to subdivide one or more features of the polygonal mesh to determine a refined polygonal mesh.
18. The non-transitory computer readable medium of claim 17 , wherein the one or more features of the polygonal mesh includes at least one member selected from a group consisting of edges, faces, and vertices.