Model for predicting perception of facial action unit activation using virtual humans

McDonnell, Rachel; Zibrek, Katja; Carrigan, Emma; Dahyot, Rozenn

doi:10.1016/j.cag.2021.07.022

Cited by 13 publications

(4 citation statements)

References 38 publications

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“…In addition, some objective measures may not be perceptually sound. For example, increasing the level of changes to the facial structure of facial animation is not linear to the perceived change [CCB01, MZCD21], therefore, it is important to take user evaluation into account. This evaluation can be done by conducting perceptual user studies, where the users need to respond to questions about the realism aspects of VHs they have observed.…”

Section: Evaluation Methodsmentioning

confidence: 99%

“…They found that degrading face geometry (shape and texture blurring) degrades a number of recognizable charactertistics, including recogition and intensity of emotions, therefore leading to less realistic VH faces. More recently, Mcdonnell et al [MZCD21] focused in their study on perceptual importance of particular blendshapes for facial animation and found that some were more salient then others. However, they did not mention if manipulating blendshapes would make the facial expression more realistic.…”

Section: Taxonomy Of Animation Features Influencing Virtual Human Rea...mentioning

confidence: 99%

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A Survey on Realistic Virtual Human Animations: Definitions, Features and Evaluations

Rekik,

Wuhrer,

Hoyet

et al. 2024

Computer Graphics Forum

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Generating realistic animated virtual humans is a problem that has been extensively studied with many applications in different types of virtual environments. However, the creation process of such realistic animations is challenging, especially because of the number and variety of influencing factors, that should then be identified and evaluated. In this paper, we attempt to provide a clearer understanding of how the multiple factors that have been studied in the literature impact the level of realism of animated virtual humans, by providing a survey of studies assessing their realism. This includes a review of features that have been manipulated to increase the realism of virtual humans, as well as evaluation approaches that have been developed. As the challenges of evaluating animated virtual humans in a way that agrees with human perception are still active research problems, this survey further identifies important open problems and directions for future research.

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Section: Evaluation Methodsmentioning

confidence: 99%

Section: Taxonomy Of Animation Features Influencing Virtual Human Rea...mentioning

confidence: 99%

A Survey on Realistic Virtual Human Animations: Definitions, Features and Evaluations

Rekik,

Wuhrer,

Hoyet

et al. 2024

Computer Graphics Forum

Self Cite

View full text Add to dashboard Cite

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“…Human perception has been extensively studied in CG research [4], [6], [8]. Virtual humans can be observed through various stimuli: images, videos, games, among others.…”

Section: Related Workmentioning

confidence: 99%

“…Many works discuss this theme, such as the work of Araujo et al [6]. Regarding the perception of characters with different skin colors, some works focus on the perception based on the use of white and black skin colors in the experiment (Hasler et al [9]), perception of blendshapes in characters with black and white skin colors (McDonnell et al [8]), perception of faces of various ethnic groups (Krumhuber et al [10]), among others.…”

Section: Related Workmentioning

confidence: 99%

Perception of Computer Graphics Characters in Groups with Skin Color Diversity

Araujo

Schaffer

Costa

et al. 2021

Anais Estendidos Do XX Simpósio Brasileiro De Jogos E Entretenimento Digital (SBGames Estendido 2021)

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This paper aims to assess the human perception of groups about charisma, comfort and realism in relation to black and white skin colors of characters created with Computer Graphics (CG) in different media, such as movies, games, animations, simulations, among others. We created a form that contained images of groups of CG characters with black and white skin colors, and asked participants to rate perceived comfort, charisma and realism. After that, we compared these results with data collected from related work. The results indicated that people can feel comfortable, and observe charisma similarly to CG characters with black and white skin colors.

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