A Sketch-Based Interface for Facial Animation in Immersive Virtual Reality.
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| Title: | A Sketch-Based Interface for Facial Animation in Immersive Virtual Reality. |
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| Authors: | Cannavò, Alberto (AUTHOR), Stellini, Emanuele (AUTHOR), Zhang, Congyi (AUTHOR), Lamberti, Fabrizio (AUTHOR) |
| Source: | International Journal of Human-Computer Interaction. Jun2024, Vol. 40 Issue 12, p3234-3252. 19p. |
| Subjects: | Virtual reality, 3-D animation, Computer graphics, Animators |
| Abstract: | Creating facial animations using 3D computer graphics represents a very laborious and time-consuming task. Among the numberless approaches for animating faces, the use of blendshapes remains the most common solution because of their simplicity and the ability to produce high-quality results. This approach, however, is also characterized by important drawbacks. With the traditional animation suites, to select the blendshapes to be activated animators are generally requested to memorize the mapping between the blendshapes and the influenced mesh vertices; alternatively, they need to adopt a trial-and-error search within the whole library of available blendshapes. Moreover, the level of expressiveness that can be reached may be lower than expected; this is due to the fact that the possibility to apply transformations to vertices different than just linear translations and mechanisms for adding, e.g., exaggerations, are typically not integrated into the same animation environment. To tackle these issues, this article proposes an immersive virtual reality-based interface that leverages sketches for the direct manipulation of blendshapes. Animators can draw both linear and curved strokes, which are used to automatically extract information about the blendshape to be activated and its weight, the trajectories that associated vertices have to follow, as well as the timing of the overall animation. A user study was carried out with the aim of evaluating the proposed approach on several representative animations tasks. Both objective and subjective measurements were collected. Experimental results showed the benefits of the devised interface in terms of task completion time, animation accuracy, and usability. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Human-Computer Interaction is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 178089228 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A Sketch-Based Interface for Facial Animation in Immersive Virtual Reality. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Cannavò%2C+Alberto%22">Cannavò, Alberto</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Stellini%2C+Emanuele%22">Stellini, Emanuele</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Congyi%22">Zhang, Congyi</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lamberti%2C+Fabrizio%22">Lamberti, Fabrizio</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Human-Computer+Interaction%22">International Journal of Human-Computer Interaction</searchLink>. Jun2024, Vol. 40 Issue 12, p3234-3252. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Virtual+reality%22">Virtual reality</searchLink><br /><searchLink fieldCode="DE" term="%223-D+animation%22">3-D animation</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+graphics%22">Computer graphics</searchLink><br /><searchLink fieldCode="DE" term="%22Animators%22">Animators</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Creating facial animations using 3D computer graphics represents a very laborious and time-consuming task. Among the numberless approaches for animating faces, the use of blendshapes remains the most common solution because of their simplicity and the ability to produce high-quality results. This approach, however, is also characterized by important drawbacks. With the traditional animation suites, to select the blendshapes to be activated animators are generally requested to memorize the mapping between the blendshapes and the influenced mesh vertices; alternatively, they need to adopt a trial-and-error search within the whole library of available blendshapes. Moreover, the level of expressiveness that can be reached may be lower than expected; this is due to the fact that the possibility to apply transformations to vertices different than just linear translations and mechanisms for adding, e.g., exaggerations, are typically not integrated into the same animation environment. To tackle these issues, this article proposes an immersive virtual reality-based interface that leverages sketches for the direct manipulation of blendshapes. Animators can draw both linear and curved strokes, which are used to automatically extract information about the blendshape to be activated and its weight, the trajectories that associated vertices have to follow, as well as the timing of the overall animation. A user study was carried out with the aim of evaluating the proposed approach on several representative animations tasks. Both objective and subjective measurements were collected. Experimental results showed the benefits of the devised interface in terms of task completion time, animation accuracy, and usability. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Human-Computer Interaction is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=178089228 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/10447318.2023.2185731 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 3234 Subjects: – SubjectFull: Virtual reality Type: general – SubjectFull: 3-D animation Type: general – SubjectFull: Computer graphics Type: general – SubjectFull: Animators Type: general Titles: – TitleFull: A Sketch-Based Interface for Facial Animation in Immersive Virtual Reality. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Cannavò, Alberto – PersonEntity: Name: NameFull: Stellini, Emanuele – PersonEntity: Name: NameFull: Zhang, Congyi – PersonEntity: Name: NameFull: Lamberti, Fabrizio IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 06 Text: Jun2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 10447318 Numbering: – Type: volume Value: 40 – Type: issue Value: 12 Titles: – TitleFull: International Journal of Human-Computer Interaction Type: main |
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