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Inertial Sensor-Based Touch and Shake Metaphor for Expressive Control of 3D Virtual Avatars.

Patil S, Chintalapalli HR, Kim D, Chai Y - Sensors (Basel) (2015)

Bottom Line: A quaternion-based complementary filter is implemented to reduce noise and drift.Our approach enables the recognition of gestures and estimates gesture variations for continuous interaction.This synthesizes stylistic variations in a 3D virtual avatar, producing motions that are not present in the motion database using hand gesture sequences from a single inertial motion sensor.

View Article: PubMed Central - PubMed

Affiliation: Graduate School of Advanced Imaging Science, Multimedia and Film Chung-Ang University, Seoul 156-756, Korea. patil.shashidhar@hotmail.com.

ABSTRACT
In this paper, we present an inertial sensor-based touch and shake metaphor for expressive control of a 3D virtual avatar in a virtual environment. An intuitive six degrees-of-freedom wireless inertial motion sensor is used as a gesture and motion control input device with a sensor fusion algorithm. The algorithm enables user hand motions to be tracked in 3D space via magnetic, angular rate, and gravity sensors. A quaternion-based complementary filter is implemented to reduce noise and drift. An algorithm based on dynamic time-warping is developed for efficient recognition of dynamic hand gestures with real-time automatic hand gesture segmentation. Our approach enables the recognition of gestures and estimates gesture variations for continuous interaction. We demonstrate the gesture expressivity using an interactive flexible gesture mapping interface for authoring and controlling a 3D virtual avatar and its motion by tracking user dynamic hand gestures. This synthesizes stylistic variations in a 3D virtual avatar, producing motions that are not present in the motion database using hand gesture sequences from a single inertial motion sensor.

No MeSH data available.


Related in: MedlinePlus

Mimic gesture patterns for kicking and punching actions.
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sensors-15-14435-f006: Mimic gesture patterns for kicking and punching actions.

Mentions: Figure 6 shows the recorded freehand affordance mimic gesture patterns for different kicking and punching styles from the 6DOF wireless motion sensor. We use the term “mimic” to represent the animation action that the virtual avatar is going to perform. The gesture training templates used to mimic kicking and punching actions are generated as shown in Figure 6a–f. The user begins the gesture by pressing the start button on the wireless motion sensor, and then freely and continuously moves his/her hand in 3D space.


Inertial Sensor-Based Touch and Shake Metaphor for Expressive Control of 3D Virtual Avatars.

Patil S, Chintalapalli HR, Kim D, Chai Y - Sensors (Basel) (2015)

Mimic gesture patterns for kicking and punching actions.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4507623&req=5

sensors-15-14435-f006: Mimic gesture patterns for kicking and punching actions.
Mentions: Figure 6 shows the recorded freehand affordance mimic gesture patterns for different kicking and punching styles from the 6DOF wireless motion sensor. We use the term “mimic” to represent the animation action that the virtual avatar is going to perform. The gesture training templates used to mimic kicking and punching actions are generated as shown in Figure 6a–f. The user begins the gesture by pressing the start button on the wireless motion sensor, and then freely and continuously moves his/her hand in 3D space.

Bottom Line: A quaternion-based complementary filter is implemented to reduce noise and drift.Our approach enables the recognition of gestures and estimates gesture variations for continuous interaction.This synthesizes stylistic variations in a 3D virtual avatar, producing motions that are not present in the motion database using hand gesture sequences from a single inertial motion sensor.

View Article: PubMed Central - PubMed

Affiliation: Graduate School of Advanced Imaging Science, Multimedia and Film Chung-Ang University, Seoul 156-756, Korea. patil.shashidhar@hotmail.com.

ABSTRACT
In this paper, we present an inertial sensor-based touch and shake metaphor for expressive control of a 3D virtual avatar in a virtual environment. An intuitive six degrees-of-freedom wireless inertial motion sensor is used as a gesture and motion control input device with a sensor fusion algorithm. The algorithm enables user hand motions to be tracked in 3D space via magnetic, angular rate, and gravity sensors. A quaternion-based complementary filter is implemented to reduce noise and drift. An algorithm based on dynamic time-warping is developed for efficient recognition of dynamic hand gestures with real-time automatic hand gesture segmentation. Our approach enables the recognition of gestures and estimates gesture variations for continuous interaction. We demonstrate the gesture expressivity using an interactive flexible gesture mapping interface for authoring and controlling a 3D virtual avatar and its motion by tracking user dynamic hand gestures. This synthesizes stylistic variations in a 3D virtual avatar, producing motions that are not present in the motion database using hand gesture sequences from a single inertial motion sensor.

No MeSH data available.


Related in: MedlinePlus