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Realistic facial expression of virtual human based on color, sweat, and tears effects.

Alkawaz MH, Basori AH, Mohamad D, Mohamed F - ScientificWorldJournal (2014)

Bottom Line: The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar.The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer.The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Computing, Universiti Teknologi Malaysia, 3rd Floor, N28A, 81310 Johor Bahru, Johor, Malaysia.

ABSTRACT
Generating extreme appearances such as scared awaiting sweating while happy fit for tears (cry) and blushing (anger and happiness) is the key issue in achieving the high quality facial animation. The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar. The physical properties of muscles, emotions, or the fluid properties with sweating and tears initiators are incorporated. The action units (AUs) of facial action coding system are merged with autonomous AUs to create expressions including sadness, anger with blushing, happiness with blushing, and fear. Fluid effects such as sweat and tears are simulated using the particle system and smoothed-particle hydrodynamics (SPH) methods which are combined with facial animation technique to produce complex facial expressions. The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer. The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions. The proposed method has contribution towards the development of facial animation industry and game as well as computer graphics.

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Related in: MedlinePlus

Simulation of sweating due to fear in real-time based on the particle system and SPH method.
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Related In: Results  -  Collection


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fig7: Simulation of sweating due to fear in real-time based on the particle system and SPH method.

Mentions: Upon blending the facial animation with the fluids generator, integration with the particle system and SPH method is made to generate the sweat and controlled flow on forehead surface. The sweating of fear expression is generated in real-time to represent the extreme expression of virtual avatar. Figure 7(a) shows the fear expression without sweating. The simulation of sweating is concurrently performed with particle system and SPH method as depicted in Figures 7(b) and 7(c).


Realistic facial expression of virtual human based on color, sweat, and tears effects.

Alkawaz MH, Basori AH, Mohamad D, Mohamed F - ScientificWorldJournal (2014)

Simulation of sweating due to fear in real-time based on the particle system and SPH method.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4127249&req=5

fig7: Simulation of sweating due to fear in real-time based on the particle system and SPH method.
Mentions: Upon blending the facial animation with the fluids generator, integration with the particle system and SPH method is made to generate the sweat and controlled flow on forehead surface. The sweating of fear expression is generated in real-time to represent the extreme expression of virtual avatar. Figure 7(a) shows the fear expression without sweating. The simulation of sweating is concurrently performed with particle system and SPH method as depicted in Figures 7(b) and 7(c).

Bottom Line: The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar.The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer.The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Computing, Universiti Teknologi Malaysia, 3rd Floor, N28A, 81310 Johor Bahru, Johor, Malaysia.

ABSTRACT
Generating extreme appearances such as scared awaiting sweating while happy fit for tears (cry) and blushing (anger and happiness) is the key issue in achieving the high quality facial animation. The effects of sweat, tears, and colors are integrated into a single animation model to create realistic facial expressions of 3D avatar. The physical properties of muscles, emotions, or the fluid properties with sweating and tears initiators are incorporated. The action units (AUs) of facial action coding system are merged with autonomous AUs to create expressions including sadness, anger with blushing, happiness with blushing, and fear. Fluid effects such as sweat and tears are simulated using the particle system and smoothed-particle hydrodynamics (SPH) methods which are combined with facial animation technique to produce complex facial expressions. The effects of oxygenation of the facial skin color appearance are measured using the pulse oximeter system and the 3D skin analyzer. The result shows that virtual human facial expression is enhanced by mimicking actual sweating and tears simulations for all extreme expressions. The proposed method has contribution towards the development of facial animation industry and game as well as computer graphics.

Show MeSH
Related in: MedlinePlus