Engineers have developed a new system for full-body motion capture -- and it doesn't require specialized rooms, expensive equipment, bulky cameras or an array of sensors. Instead, it requires only a smartphone, smartwatch or earbuds.
Engineers have developed a new system for full-body motion capture -- and it doesn't require specialized rooms, expensive equipment, bulky cameras or an array of sensors. Instead, it requires only a smartphone, smartwatch or earbuds.
Ahuja's team will unveil MobilePoser on Oct. 15, at the 2024 ACM Symposium on User Interface Software and Technology in Pittsburgh."MobilePoser: Real-time full-body pose estimation and 3D human translation from IMUs in mobile consumer devices" will take place as a part of a session on"Poses as Input."
Other motion-sensing systems, like Microsoft Kinect, for example, rely on stationary cameras that view body movements. If a person is within the camera's field of view, these systems work well. But they are impractical for mobile or on-the-go applications.To overcome these limitations, Ahuja's team turned to inertial measurement units , a system that uses a combination of sensors -- accelerometers, gyroscopes and magnetometers -- to measure a body's movement and orientation.
The resulting system has a tracking error of just 8 to 10 centimeters. For comparison, the Microsoft Kinect has a tracking error of 4 to 5 centimeters, assuming the user stays within the camera's field of view. With MobilePoser, the user has freedom to roam. To encourage other researchers to build upon this work, Ahuja's team has released its pre-trained models, data pre-processing scripts and model training code as open-source software. Ahuja also says the app will soon be available for iPhone, AirPods and Apple Watch.Carbon capture is a promising method to help slow climate change. With this approach, carbon dioxide is trapped before it escapes into the atmosphere, but the process requires a large ...
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