A sketching interface for sitting pose design in the virtual environment
Character pose design is one of the most fundamental processes in computer graphics authoring. Although there are many research efforts in this field, most existing design tools consider only character body structure, rather than its interaction with the environment. This paper presents an intuitive...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/102126 http://hdl.handle.net/10220/16545 |
| _version_ | 1811690430409998336 |
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| author | Lin, Juncong Igarashi, Takeo Mitani, Jun Liao, Minghong He, Ying |
| author2 | School of Computer Engineering |
| author_facet | School of Computer Engineering Lin, Juncong Igarashi, Takeo Mitani, Jun Liao, Minghong He, Ying |
| author_sort | Lin, Juncong |
| collection | NTU |
| description | Character pose design is one of the most fundamental processes in computer graphics authoring. Although there are many research efforts in this field, most existing design tools consider only character body structure, rather than its interaction with the environment. This paper presents an intuitive sketching interface that allows the user to interactively place a 3D human character in a sitting position on a chair. Within our framework, the user sketches the target pose as a 2D stick figure and attaches the selected joints to the environment (e.g., the feet on the ground) with a pin tool. As reconstructing the 3D pose from a 2D stick figure is an ill-posed problem due to many possible solutions, the key idea in our paper is to reduce solution space by considering the interaction between the character and environment and adding physics constraints, such as balance and collision. Further, we formulated this reconstruction into a nonlinear optimization problem and solved it via the genetic algorithm (GA) and the quasi-Newton solver. With the GPU implementation, our system is able to generate the physically correct and visually pleasing pose at an interactive speed. The promising experimental results and user study demonstrates the efficacy of our method. |
| first_indexed | 2024-10-01T06:03:52Z |
| format | Journal Article |
| id | ntu-10356/102126 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:03:52Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1021262020-05-28T07:19:07Z A sketching interface for sitting pose design in the virtual environment Lin, Juncong Igarashi, Takeo Mitani, Jun Liao, Minghong He, Ying School of Computer Engineering DRNTU::Engineering::Computer science and engineering::Computing methodologies::Computer graphics Character pose design is one of the most fundamental processes in computer graphics authoring. Although there are many research efforts in this field, most existing design tools consider only character body structure, rather than its interaction with the environment. This paper presents an intuitive sketching interface that allows the user to interactively place a 3D human character in a sitting position on a chair. Within our framework, the user sketches the target pose as a 2D stick figure and attaches the selected joints to the environment (e.g., the feet on the ground) with a pin tool. As reconstructing the 3D pose from a 2D stick figure is an ill-posed problem due to many possible solutions, the key idea in our paper is to reduce solution space by considering the interaction between the character and environment and adding physics constraints, such as balance and collision. Further, we formulated this reconstruction into a nonlinear optimization problem and solved it via the genetic algorithm (GA) and the quasi-Newton solver. With the GPU implementation, our system is able to generate the physically correct and visually pleasing pose at an interactive speed. The promising experimental results and user study demonstrates the efficacy of our method. 2013-10-17T03:36:49Z 2019-12-06T20:50:05Z 2013-10-17T03:36:49Z 2019-12-06T20:50:05Z 2012 2012 Journal Article Lin, J. C., Igarashi, T., Mitani, J., Liao, M. H., & He, Y. (2012). A sketching interface for sitting pose design in the virtual environment. IEEE transactions on visualization and computer graphics, 18(11), 1979-1991. 1077-2626 https://hdl.handle.net/10356/102126 http://hdl.handle.net/10220/16545 10.1109/TVCG.2012.61 en IEEE transactions on visualization and computer graphics © 2012 IEEE |
| spellingShingle | DRNTU::Engineering::Computer science and engineering::Computing methodologies::Computer graphics Lin, Juncong Igarashi, Takeo Mitani, Jun Liao, Minghong He, Ying A sketching interface for sitting pose design in the virtual environment |
| title | A sketching interface for sitting pose design in the virtual environment |
| title_full | A sketching interface for sitting pose design in the virtual environment |
| title_fullStr | A sketching interface for sitting pose design in the virtual environment |
| title_full_unstemmed | A sketching interface for sitting pose design in the virtual environment |
| title_short | A sketching interface for sitting pose design in the virtual environment |
| title_sort | sketching interface for sitting pose design in the virtual environment |
| topic | DRNTU::Engineering::Computer science and engineering::Computing methodologies::Computer graphics |
| url | https://hdl.handle.net/10356/102126 http://hdl.handle.net/10220/16545 |
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