Nick Toothman
ABSTRACT
While advancements have made it easier to work with digital characters, it remains difficult to author animations that display the free and highly expressive shape change that characterize hand-drawn animation. We present a deformation method that combines skeletal control and free shape change in a single framework, along with an intuitive, sketch-based interface. By finding attachment points between the mesh and skeleton, we enable configurable skeleton and surface-based deformations, and avoid common skinning artifacts. Use of sketch-based interfaces and graphics hardware make both skeletal and mesh deformation simple to control and fast enough for interactive use.
- Alec Jacobson and Olga Sorkine. 2011. Stretchable and Twistable Bones for Skeletal Shape Deformation. ACM Trans. Graph. 30, 6, Article 165 (Dec. 2011), 8 pages. Google Scholar
Digital Library
- A. Cengiz Öztireli, Ilya Baran, Tiberiu Popa, Boris Dalstein, Robert W. Sumner, and Markus Gross. 2013. Differential Blending for Expressive Sketch-based Posing. In Proceedings of the 12th ACM SIGGRAPH/Eurographics Symposium on Computer Animation (SCA '13). 155--164. Google ScholarDigital Library
- Olga Sorkine and Marc Alexa. 2007. As-rigid-as-possible Surface Modeling. In Proceedings of the Fifth Eurographics Symposium on Geometry Processing (SGP '07). Eurographics Association, Aire-la-Ville, Switzerland, Switzerland, 109--116. http://dl.acm.org/citation.cfm?id=1281991.1282006Google ScholarDigital Library
- O. Sorkine, D. Cohen-Or, Y. Lipman, M. Alexa, C. Rössi, and H.-P. Seidel. 2004. Laplacian Surface Editing. In Proceedings of the 2004 Eurographics/ACM SIGGRAPH Symposium on Geometry Processing (SGP '04). 175--184. Google ScholarDigital Library
- Johannes Zimmermann, Andrew Nealen, and Marc Alexa. 2007. SilSketch: Automated Sketch-based Editing of Surface Meshes. In Proceedings of the 4th Eurographics Workshop on Sketch-based Interfaces and Modeling (SBIM '07). 23--30. Google ScholarDigital Library
Index Terms
- Attachment-based character deformation
Recommendations
Real-time enveloping with rotational regression
Enveloping, or the mapping of skeletal controls to the deformations of a surface, is key to driving realistic animated characters. Despite its widespread use, enveloping still relies on slow or inaccurate deformation methods. We propose a method that is ...
Sketch based 3D character deformation
Transactions on edutainment VMost 3D character editing tools are complex and non-intuitive. It takes lot of skill and labor from the artists to create even a draft 3D humanoid model. This paper proposes an intuitive 2D sketch-driven drafting tool that allows users to quickly shape ...
Real-time enveloping with rotational regression
SIGGRAPH '07: ACM SIGGRAPH 2007 papersEnveloping, or the mapping of skeletal controls to the deformations of a surface, is key to driving realistic animated characters. Despite its widespread use, enveloping still relies on slow or inaccurate deformation methods. We propose a method that is ...
Comments