Fractured texture coordinates

• US 8,681,147 B1
• Filed: 09/29/2010
• Issued: 03/25/2014
• Est. Priority Date: 10/02/2009
• Status: Active Grant

• Current Assignee: Pixar (The Walt Disney Company)
• Original Assignee: Pixar (The Walt Disney Company)
• Inventors: Baraff, David, Waggoner, Christine
• Primary Examiner(s): Nguyen, Phu K
• Application Number:
  US12/893,460
• Time in Patent Office: 1,273 Days
• Field of Search: 345/419, 345/423, 345/582
• US Class Current: 345/419
• CPC Class Codes: G06T 15/04 Texture mapping
• CPC Class Codes: G06T 19/20 Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts

Abstract

In various embodiments, an interactive multi-mesh garment modeling system may allow a user to employ solid modeling techniques to create one or more representations of garment objects whose motions are typically determined by computer simulations. Accordingly, in one aspect, the interactive multi-mesh garment modeling system may automatically generate one or more meshes that satisfy the requirements for computer simulations from a source mesh modeled by a user using solid modeling techniques. For each polygon associated with a UV mapping of one of these meshes, gradients of U and V for the polygon can be determined with respect to a 3D representation of an object that are substantially orthogonal and of uniform magnitude and that approximate the original gradients of U and V for the polygon. In another aspect, each polygon in a plurality of polygons of a 2D parameterization of an object can be reshaped based on individually corresponding polygons in a 3D representation of the object.

Claims

1. A method for facilitating surface simulations, the method comprising:

receiving, at one or more computer systems, information specifying a UV mapping associated with a surface;

receiving, at the one or more computer systems, information specifying 3D position of the surface associated with the UV mapping;

for each polygon associated with the UV mapping,

determining, with one or more processors associated with the one or more computer systems, gradients of U and V for the polygon with respect to the 3D position of the surface that are substantially orthogonal and of uniform magnitude and that approximate the original gradients of U and V for the polygon, and

generating, with the one or more processors associated with the one or more computer systems, information related to the determined gradients of U and V for the polygon; and

storing the information related to the determined gradients of U and V for each polygon in a storage device associated with the one or more computer systems.

2. The method of claim 1 wherein receiving, at the one or more computer systems, information defining the UV mapping comprises receiving a texture map.

3. The method of claim 1 further comprising:

generating, with the one or more processors associated with the one or more computer systems, the UV mapping automatically using a mapping program.

4. The method of claim 1 further comprising:

generating, with the one or more processors associated with the one or more computer systems, the UV mapping based on user guidance.

5. The method of claim 1 further comprising:

guiding, with the one or more processors associated with the one or more computer systems, a simulation of a surface using the determined gradients of U and V for each polygon associated with the UV mapping.

6. The method of claim 1 further comprising:

simulating, with the one or more processors associated with the one or more computer systems, computer-generated cloth based on the determined gradients of U and V for each polygon associated with the UV mapping.

7. A non-transitory computer-readable medium storing computer-executable code for facilitating surface simulations, the computer-readable medium comprising:

code for receiving information specifying a UV mapping associated with a surface;

code for receiving information specifying 3D position of the surface associated with the UV mapping;

code for determining, for each polygon associated with the UV mapping, gradients of U and V for the polygon with respect to the 3D position of the surface that are substantially orthogonal and of uniform magnitude and that approximate the original gradients of U and V for the polygon; and

code for generating information related to the determined gradients of U and V for each polygon.

8. The computer-readable medium of claim 7 wherein the code for receiving the information defining the UV mapping comprises code for receiving a texture map.

9. The computer-readable medium of claim 7 further comprising:

code for generating the UV mapping automatically using a mapping program.

10. The computer-readable medium of claim 7 further comprising:

code for generating the UV mapping based on user guidance.

11. The computer-readable medium of claim 7 further comprising:

code for guiding a simulation of a surface using the determined gradients of U and V for each polygon associated with the UV mapping.

12. The computer-readable medium of claim 7 further comprising:

code for simulating computer-generated cloth based on the determined gradients of U and V for each polygon associated with the UV mapping.

13. A method for reducing distortions in computer-generated objects, the method comprising:

receiving, at one or more computer systems, information defining a first UV parameterization of an object, the first UV parameterization having a plurality of polygons;

receiving, at the one or more computer systems, a 3D representation of the object, the 3D representation having a plurality of polygons that each individually corresponding to at least one polygon of the first UV parameterization; and

resizing or reorienting, with one or more processors associated with the one or more computer systems, one or more polygons in the plurality of polygons of the first UV parameterization of the object based on at least a corresponding polygon in plurality of polygons of the 3D representation of the object; and

generating information defining a second UV parameterization of the object based on the one or more resized or reoriented polygons in the plurality of polygons of the first UV parameterization and storing the information in a storage device associated with the one or more computer systems.

14. The method of claim 13 wherein receiving, at the one or more computer systems, the information defining the first UV parameterization of the object comprises receiving a UV parameterization that represents a texture map.

15. The method of claim 13 wherein the first UV parameterization is generated automatically by a mapping program or in response to user guidance input.

16. The method of claim 13 wherein the first UV parameterization identifies every point of the 3D representation of the object with a U and V value.

17. The method of claim 13 further comprising guiding a simulation of a 2D representation of the object using the second UV parameterization of the object.

18. A non-transitory computer-readable medium storing computer-executable code for reducing distortions in computer-generated objects, the computer-readable medium comprising:

code for receiving information defining a first UV parameterization of an object, the first UV parameterization having a plurality of polygons;

code for receiving a 3D representation of the object, the 3D representation having a plurality of polygons that each individually corresponding to at least one polygon of the first UV parameterization;

code for resizing or reorienting one or more polygons in the plurality of polygons of the first UV parameterization based on at least a corresponding polygon in the plurality of polygons of the 3D representation of the object; and

code for generating information defining a second UV parameterization of the object based on the one or more resized or reoriented polygons in the plurality of polygons of the first UV parameterization.

19. The computer-readable medium of claim 18 wherein the code for receiving the information defining the first UV parameterization of the object comprises code for receiving a UV parameterization that represents a texture map.

20. The computer-readable medium of claim 18 wherein the first UV parameterization is generated automatically by a mapping program or in response to user guidance input.

21. The computer-readable medium of claim 18 wherein the first UV parameterization identifies every point of the 3D representation of the object with a U and V value.

22. The computer-readable medium of claim 18 further comprising code for guiding a simulation of a 2D representation of the object using the second UV parameterization of the object.